<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2022 Workiva-->
<!--r:49387cbb-0c9e-486b-ae93-ff08c78ff9f8,g:0ff5e6d0-2b69-4705-8744-4152669b3f97-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.echostar.com/role/CoverPage" xlink:type="simple" xlink:href="sats-20220630.xsd#CoverPage"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/CoverPage" xlink:type="extended" id="if23e151beb9e464892a19acb34c69074_CoverPage">
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_d6bf6b8c-590a-4b8e-a76e-0aeda463db9e" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentType"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_DocumentType_d6bf6b8c-590a-4b8e-a76e-0aeda463db9e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentQuarterlyReport_bcf198d9-6a79-4600-b6c3-d93e870233c7" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentQuarterlyReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_DocumentQuarterlyReport_bcf198d9-6a79-4600-b6c3-d93e870233c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_b4f3e4df-04fa-4808-92ea-1915979e7ffa" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_DocumentPeriodEndDate_b4f3e4df-04fa-4808-92ea-1915979e7ffa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentTransitionReport_2cee3cb4-604b-479a-80ff-9757573065e7" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentTransitionReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_DocumentTransitionReport_2cee3cb4-604b-479a-80ff-9757573065e7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_1c231e93-dbd1-4c4b-9796-d3f97f4ed106" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityFileNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_EntityFileNumber_1c231e93-dbd1-4c4b-9796-d3f97f4ed106" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_82573abc-99b8-473b-b6a1-ae04fe882d0c" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_EntityRegistrantName_82573abc-99b8-473b-b6a1-ae04fe882d0c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_f30f9959-e727-4aa1-b0b9-cfd9af051c21" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_EntityIncorporationStateCountryCode_f30f9959-e727-4aa1-b0b9-cfd9af051c21" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_9913e044-c7ea-4ff0-b3d8-d1810e9286c7" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_EntityTaxIdentificationNumber_9913e044-c7ea-4ff0-b3d8-d1810e9286c7" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_e8cae2e7-9be0-4ea9-9342-e476ca179e1d" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressAddressLine1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_EntityAddressAddressLine1_e8cae2e7-9be0-4ea9-9342-e476ca179e1d" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_994b33f8-2978-4286-a09f-3a47e600851c" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressCityOrTown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_EntityAddressCityOrTown_994b33f8-2978-4286-a09f-3a47e600851c" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_cee988f7-e55f-4912-957b-48eb5d4773d1" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressStateOrProvince"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_EntityAddressStateOrProvince_cee988f7-e55f-4912-957b-48eb5d4773d1" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_28239895-8d48-468a-9548-8537ceae9997" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressPostalZipCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_EntityAddressPostalZipCode_28239895-8d48-468a-9548-8537ceae9997" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_05374146-31d3-488d-8e0a-7f1eaf720a1b" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_CityAreaCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_CityAreaCode_05374146-31d3-488d-8e0a-7f1eaf720a1b" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_e604fb7b-62a6-4405-bd6e-0944a9cdc372" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LocalPhoneNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_LocalPhoneNumber_e604fb7b-62a6-4405-bd6e-0944a9cdc372" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_7258e8f1-093e-4db8-92bd-f58f595d81ef" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_Security12bTitle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_Security12bTitle_7258e8f1-093e-4db8-92bd-f58f595d81ef" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_f4ce26e6-52d9-4b5b-98b4-53d41825301b" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_SecurityExchangeName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_SecurityExchangeName_f4ce26e6-52d9-4b5b-98b4-53d41825301b" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_0ada8916-1bb5-4cc6-8a44-5bd7366e8b38" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_TradingSymbol"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_TradingSymbol_0ada8916-1bb5-4cc6-8a44-5bd7366e8b38" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCurrentReportingStatus_931223c3-fb5f-4569-8b42-7383ac86dec2" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityCurrentReportingStatus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_EntityCurrentReportingStatus_931223c3-fb5f-4569-8b42-7383ac86dec2" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityInteractiveDataCurrent_191de143-22b2-440d-8eb7-2dc95a954f73" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityInteractiveDataCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_EntityInteractiveDataCurrent_191de143-22b2-440d-8eb7-2dc95a954f73" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFilerCategory_e5e28ce6-13fc-499a-90f6-120bbb1762ec" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityFilerCategory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_EntityFilerCategory_e5e28ce6-13fc-499a-90f6-120bbb1762ec" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_0605d0af-da5c-4570-8eee-6499d94845e7" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_EntityEmergingGrowthCompany_0605d0af-da5c-4570-8eee-6499d94845e7" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntitySmallBusiness_73262e02-1b11-480f-92b5-2350cbe2d5ba" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntitySmallBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_EntitySmallBusiness_73262e02-1b11-480f-92b5-2350cbe2d5ba" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityShellCompany_693dd244-d9a4-4358-a097-2fd193a6c463" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityShellCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_EntityShellCompany_693dd244-d9a4-4358-a097-2fd193a6c463" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_93511bfc-23eb-4163-8e5b-b867e64378be" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityCommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_93511bfc-23eb-4163-8e5b-b867e64378be" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_74bb32ec-3460-43f7-88d1-65a280f89c47" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_EntityCentralIndexKey_74bb32ec-3460-43f7-88d1-65a280f89c47" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_11ff3a69-b8ab-4e62-beef-0af070fce9d2" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_AmendmentFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_AmendmentFlag_11ff3a69-b8ab-4e62-beef-0af070fce9d2" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalYearFocus_9cebab25-f92b-4412-80d1-73c047163557" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentFiscalYearFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_DocumentFiscalYearFocus_9cebab25-f92b-4412-80d1-73c047163557" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalPeriodFocus_4dfd8cad-2998-4e92-a600-604fe074e476" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentFiscalPeriodFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_DocumentFiscalPeriodFocus_4dfd8cad-2998-4e92-a600-604fe074e476" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CurrentFiscalYearEndDate_644a70c3-c739-46b4-b3e1-1e2086c04c57" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_CurrentFiscalYearEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_CurrentFiscalYearEndDate_644a70c3-c739-46b4-b3e1-1e2086c04c57" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable_c1a6b411-bf24-4cfb-b2e3-0702907407ed" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentInformationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_DocumentInformationLineItems_edffa1b3-6178-4426-8e70-52206db51988" xlink:to="loc_dei_DocumentInformationTable_c1a6b411-bf24-4cfb-b2e3-0702907407ed" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_718bb536-9679-426b-93c9-fbfe67175615" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_DocumentInformationTable_c1a6b411-bf24-4cfb-b2e3-0702907407ed" xlink:to="loc_us-gaap_StatementClassOfStockAxis_718bb536-9679-426b-93c9-fbfe67175615" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_718bb536-9679-426b-93c9-fbfe67175615_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_718bb536-9679-426b-93c9-fbfe67175615" xlink:to="loc_us-gaap_ClassOfStockDomain_718bb536-9679-426b-93c9-fbfe67175615_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_76921241-76b2-4d2d-a3b9-9a53a60ddc81" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_718bb536-9679-426b-93c9-fbfe67175615" xlink:to="loc_us-gaap_ClassOfStockDomain_76921241-76b2-4d2d-a3b9-9a53a60ddc81" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_39dc6e24-bff1-40f0-8623-b1423f349687" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_76921241-76b2-4d2d-a3b9-9a53a60ddc81" xlink:to="loc_us-gaap_CommonClassAMember_39dc6e24-bff1-40f0-8623-b1423f349687" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassBMember_0b339388-2ecb-425c-a4e6-c1bdd9466805" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonClassBMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_76921241-76b2-4d2d-a3b9-9a53a60ddc81" xlink:to="loc_us-gaap_CommonClassBMember_0b339388-2ecb-425c-a4e6-c1bdd9466805" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/CONSOLIDATEDBALANCESHEETS" xlink:type="simple" xlink:href="sats-20220630.xsd#CONSOLIDATEDBALANCESHEETS"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/CONSOLIDATEDBALANCESHEETS" xlink:type="extended" id="i03e8322aff3443eda51156ea02c64242_CONSOLIDATEDBALANCESHEETS">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_fb6d3802-1938-401d-ad6a-c8d1a0c14d2d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_1617003b-2c22-41c0-9970-5aa072cc61b1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_fb6d3802-1938-401d-ad6a-c8d1a0c14d2d" xlink:to="loc_us-gaap_AssetsAbstract_1617003b-2c22-41c0-9970-5aa072cc61b1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrentAbstract_abe76db3-0bcd-42ca-b269-1b1b246a91a2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_1617003b-2c22-41c0-9970-5aa072cc61b1" xlink:to="loc_us-gaap_AssetsCurrentAbstract_abe76db3-0bcd-42ca-b269-1b1b246a91a2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_65f3427c-12fa-4dd4-a572-052261021400" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_abe76db3-0bcd-42ca-b269-1b1b246a91a2" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_65f3427c-12fa-4dd4-a572-052261021400" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketableSecuritiesCurrent_154979a0-c47c-4825-8552-fe25010c6543" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MarketableSecuritiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_abe76db3-0bcd-42ca-b269-1b1b246a91a2" xlink:to="loc_us-gaap_MarketableSecuritiesCurrent_154979a0-c47c-4825-8552-fe25010c6543" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_112cb0b5-cdd9-4053-b768-b0cbcc24364e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_abe76db3-0bcd-42ca-b269-1b1b246a91a2" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_112cb0b5-cdd9-4053-b768-b0cbcc24364e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_4755dec7-5d83-453f-8123-7610f991424f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_abe76db3-0bcd-42ca-b269-1b1b246a91a2" xlink:to="loc_us-gaap_OtherAssetsCurrent_4755dec7-5d83-453f-8123-7610f991424f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_fb03607a-3aa0-441e-a605-269dd139eb10" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_abe76db3-0bcd-42ca-b269-1b1b246a91a2" xlink:to="loc_us-gaap_AssetsCurrent_fb03607a-3aa0-441e-a605-269dd139eb10" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsNoncurrentAbstract_07058c8f-5b03-4445-b2aa-5030c05d7eac" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsNoncurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_1617003b-2c22-41c0-9970-5aa072cc61b1" xlink:to="loc_us-gaap_AssetsNoncurrentAbstract_07058c8f-5b03-4445-b2aa-5030c05d7eac" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_e42fe1de-a646-4405-b1fa-456f02e025b8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_07058c8f-5b03-4445-b2aa-5030c05d7eac" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_e42fe1de-a646-4405-b1fa-456f02e025b8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_f082e353-747b-492e-8c35-29d4a6c191c5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_07058c8f-5b03-4445-b2aa-5030c05d7eac" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_f082e353-747b-492e-8c35-29d4a6c191c5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_6468554e-0671-4e31-a814-9c0b6bafadc4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_07058c8f-5b03-4445-b2aa-5030c05d7eac" xlink:to="loc_us-gaap_Goodwill_6468554e-0671-4e31-a814-9c0b6bafadc4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_IntangibleAssetsExcludingOtherIntangibleAssets_ccc1e18c-8604-4168-a730-fd6e2f627405" xlink:href="sats-20220630.xsd#sats_IntangibleAssetsExcludingOtherIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_07058c8f-5b03-4445-b2aa-5030c05d7eac" xlink:to="loc_sats_IntangibleAssetsExcludingOtherIntangibleAssets_ccc1e18c-8604-4168-a730-fd6e2f627405" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIntangibleAssetsNet_f00cbf23-f1c8-497d-b27e-241f2bd7ccd1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_07058c8f-5b03-4445-b2aa-5030c05d7eac" xlink:to="loc_us-gaap_OtherIntangibleAssetsNet_f00cbf23-f1c8-497d-b27e-241f2bd7ccd1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_de8e070d-9d71-4ed9-b3bd-870a46e61cf3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_07058c8f-5b03-4445-b2aa-5030c05d7eac" xlink:to="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_de8e070d-9d71-4ed9-b3bd-870a46e61cf3" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_eb477fc0-4add-4917-a85b-6f5623ab7fd1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_07058c8f-5b03-4445-b2aa-5030c05d7eac" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_eb477fc0-4add-4917-a85b-6f5623ab7fd1" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsNoncurrent_015f6111-c296-4b03-881d-db538c609eea" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_07058c8f-5b03-4445-b2aa-5030c05d7eac" xlink:to="loc_us-gaap_AssetsNoncurrent_015f6111-c296-4b03-881d-db538c609eea" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_c6d3607f-1035-470b-955a-2852e4391f8f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_1617003b-2c22-41c0-9970-5aa072cc61b1" xlink:to="loc_us-gaap_Assets_c6d3607f-1035-470b-955a-2852e4391f8f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_a86d7515-e478-4d6b-b173-7801fcfa0afd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_fb6d3802-1938-401d-ad6a-c8d1a0c14d2d" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_a86d7515-e478-4d6b-b173-7801fcfa0afd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_8f5af98b-ccf6-4e30-81b8-7a2f6a9dab7c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_a86d7515-e478-4d6b-b173-7801fcfa0afd" xlink:to="loc_us-gaap_LiabilitiesCurrentAbstract_8f5af98b-ccf6-4e30-81b8-7a2f6a9dab7c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableTradeCurrent_a898349a-e9f0-4afe-a57a-35712f59c0c3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsPayableTradeCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_8f5af98b-ccf6-4e30-81b8-7a2f6a9dab7c" xlink:to="loc_us-gaap_AccountsPayableTradeCurrent_a898349a-e9f0-4afe-a57a-35712f59c0c3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_e0e9be05-8373-45ea-8db1-a605edbb88a4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_8f5af98b-ccf6-4e30-81b8-7a2f6a9dab7c" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_e0e9be05-8373-45ea-8db1-a605edbb88a4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndOtherAccruedLiabilitiesCurrent_c7d691bf-71c9-4a11-beae-990c04836d2f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsPayableAndOtherAccruedLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_8f5af98b-ccf6-4e30-81b8-7a2f6a9dab7c" xlink:to="loc_us-gaap_AccountsPayableAndOtherAccruedLiabilitiesCurrent_c7d691bf-71c9-4a11-beae-990c04836d2f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_81eb53de-a0fd-44fb-8b24-a0709c496952" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_8f5af98b-ccf6-4e30-81b8-7a2f6a9dab7c" xlink:to="loc_us-gaap_LiabilitiesCurrent_81eb53de-a0fd-44fb-8b24-a0709c496952" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrentAbstract_98a8a116-cff3-4f9b-83ff-d158b91c1f7c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesNoncurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_a86d7515-e478-4d6b-b173-7801fcfa0afd" xlink:to="loc_us-gaap_LiabilitiesNoncurrentAbstract_98a8a116-cff3-4f9b-83ff-d158b91c1f7c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_7aac94a8-ad90-46df-8fb2-4d72a373e9e2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_98a8a116-cff3-4f9b-83ff-d158b91c1f7c" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_7aac94a8-ad90-46df-8fb2-4d72a373e9e2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_143d2819-2ec4-447a-ae3e-8fd8b2f18011" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_98a8a116-cff3-4f9b-83ff-d158b91c1f7c" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_143d2819-2ec4-447a-ae3e-8fd8b2f18011" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_52d5c82b-b1db-42c5-b08f-0bbf2b6ea305" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_98a8a116-cff3-4f9b-83ff-d158b91c1f7c" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_52d5c82b-b1db-42c5-b08f-0bbf2b6ea305" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesAndDeferredRevenueNoncurrent_030d4c69-8c0a-4284-b04d-f6b76e74cddd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherLiabilitiesAndDeferredRevenueNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_98a8a116-cff3-4f9b-83ff-d158b91c1f7c" xlink:to="loc_us-gaap_OtherLiabilitiesAndDeferredRevenueNoncurrent_030d4c69-8c0a-4284-b04d-f6b76e74cddd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrent_023deda3-df04-4dd4-88ea-27e51449d731" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_98a8a116-cff3-4f9b-83ff-d158b91c1f7c" xlink:to="loc_us-gaap_LiabilitiesNoncurrent_023deda3-df04-4dd4-88ea-27e51449d731" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_ba68ae57-e05c-4ade-b062-b3717323b4e5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Liabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_a86d7515-e478-4d6b-b173-7801fcfa0afd" xlink:to="loc_us-gaap_Liabilities_ba68ae57-e05c-4ade-b062-b3717323b4e5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_260048c7-faf8-417d-9373-701e3a4f5908" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_a86d7515-e478-4d6b-b173-7801fcfa0afd" xlink:to="loc_us-gaap_CommitmentsAndContingencies_260048c7-faf8-417d-9373-701e3a4f5908" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_90c6e8ae-f76e-4bd4-9a1b-9b180e7d6fc8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_a86d7515-e478-4d6b-b173-7801fcfa0afd" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_90c6e8ae-f76e-4bd4-9a1b-9b180e7d6fc8" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValue_a3ff1b35-9736-4045-af08-ba27dd73fbbb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PreferredStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_90c6e8ae-f76e-4bd4-9a1b-9b180e7d6fc8" xlink:to="loc_us-gaap_PreferredStockValue_a3ff1b35-9736-4045-af08-ba27dd73fbbb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_d38d642f-e8be-4bef-84f6-186e83274e8c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_90c6e8ae-f76e-4bd4-9a1b-9b180e7d6fc8" xlink:to="loc_us-gaap_CommonStockValue_d38d642f-e8be-4bef-84f6-186e83274e8c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_e20c648f-69ec-494b-a23b-30b56fdf5b79" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdditionalPaidInCapital"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_90c6e8ae-f76e-4bd4-9a1b-9b180e7d6fc8" xlink:to="loc_us-gaap_AdditionalPaidInCapital_e20c648f-69ec-494b-a23b-30b56fdf5b79" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_18eaaa6c-29e7-43dd-a15d-765f8298279b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_90c6e8ae-f76e-4bd4-9a1b-9b180e7d6fc8" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_18eaaa6c-29e7-43dd-a15d-765f8298279b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_38e59f4e-d5fa-4a25-a5a4-d5fcba39d8a1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_90c6e8ae-f76e-4bd4-9a1b-9b180e7d6fc8" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_38e59f4e-d5fa-4a25-a5a4-d5fcba39d8a1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonValue_9e3b8c17-a73e-47d1-a89e-856dd382493f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TreasuryStockCommonValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_90c6e8ae-f76e-4bd4-9a1b-9b180e7d6fc8" xlink:to="loc_us-gaap_TreasuryStockCommonValue_9e3b8c17-a73e-47d1-a89e-856dd382493f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_db2eab3e-5388-46a9-94ac-d864e04c7653" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_90c6e8ae-f76e-4bd4-9a1b-9b180e7d6fc8" xlink:to="loc_us-gaap_StockholdersEquity_db2eab3e-5388-46a9-94ac-d864e04c7653" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterest_d567ecde-647d-4484-81ab-b780aef6a519" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MinorityInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_90c6e8ae-f76e-4bd4-9a1b-9b180e7d6fc8" xlink:to="loc_us-gaap_MinorityInterest_d567ecde-647d-4484-81ab-b780aef6a519" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_48a55504-489d-4a0a-baa3-7edd33cdd4d0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_90c6e8ae-f76e-4bd4-9a1b-9b180e7d6fc8" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_48a55504-489d-4a0a-baa3-7edd33cdd4d0" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_20443b0a-04df-43d5-b45c-5459d342b621" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_a86d7515-e478-4d6b-b173-7801fcfa0afd" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_20443b0a-04df-43d5-b45c-5459d342b621" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_b6059cda-8765-4645-a911-0f434c6a7e48" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_fb6d3802-1938-401d-ad6a-c8d1a0c14d2d" xlink:to="loc_us-gaap_StatementTable_b6059cda-8765-4645-a911-0f434c6a7e48" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_20b6340f-f6a0-4f1b-8c18-5dd93d0c26f6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_b6059cda-8765-4645-a911-0f434c6a7e48" xlink:to="loc_us-gaap_StatementClassOfStockAxis_20b6340f-f6a0-4f1b-8c18-5dd93d0c26f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_20b6340f-f6a0-4f1b-8c18-5dd93d0c26f6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_20b6340f-f6a0-4f1b-8c18-5dd93d0c26f6" xlink:to="loc_us-gaap_ClassOfStockDomain_20b6340f-f6a0-4f1b-8c18-5dd93d0c26f6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_3b9edc2d-d85f-41fd-9130-b57cf66de483" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_20b6340f-f6a0-4f1b-8c18-5dd93d0c26f6" xlink:to="loc_us-gaap_ClassOfStockDomain_3b9edc2d-d85f-41fd-9130-b57cf66de483" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_85298e66-1a07-4d4c-a9bb-a19749b6326d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_3b9edc2d-d85f-41fd-9130-b57cf66de483" xlink:to="loc_us-gaap_CommonClassAMember_85298e66-1a07-4d4c-a9bb-a19749b6326d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassBMember_bf52fb4a-05ad-4e1a-8bfe-18d2f05add31" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonClassBMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_3b9edc2d-d85f-41fd-9130-b57cf66de483" xlink:to="loc_us-gaap_CommonClassBMember_bf52fb4a-05ad-4e1a-8bfe-18d2f05add31" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassCMember_a528c75f-800f-4f15-8d2a-36d2984fba79" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonClassCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_3b9edc2d-d85f-41fd-9130-b57cf66de483" xlink:to="loc_us-gaap_CommonClassCMember_a528c75f-800f-4f15-8d2a-36d2984fba79" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_CommonClassDMember_e67078ff-90fb-4a45-8bb5-6a3f0fc6f847" xlink:href="sats-20220630.xsd#sats_CommonClassDMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_3b9edc2d-d85f-41fd-9130-b57cf66de483" xlink:to="loc_sats_CommonClassDMember_e67078ff-90fb-4a45-8bb5-6a3f0fc6f847" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/CONSOLIDATEDBALANCESHEETSParenthetical" xlink:type="simple" xlink:href="sats-20220630.xsd#CONSOLIDATEDBALANCESHEETSParenthetical"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/CONSOLIDATEDBALANCESHEETSParenthetical" xlink:type="extended" id="i02b5b5a8c18d401897da49b0b5640f4a_CONSOLIDATEDBALANCESHEETSParenthetical">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_7eddfe47-d6f1-43ba-8eb1-3e1f70f8bfff" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockParOrStatedValuePerShare_97e77d23-f163-4c7e-aa1e-b51c1680aaae" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PreferredStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7eddfe47-d6f1-43ba-8eb1-3e1f70f8bfff" xlink:to="loc_us-gaap_PreferredStockParOrStatedValuePerShare_97e77d23-f163-4c7e-aa1e-b51c1680aaae" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_e69616a5-ef14-4c0d-b84e-d5cfecf7727a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PreferredStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7eddfe47-d6f1-43ba-8eb1-3e1f70f8bfff" xlink:to="loc_us-gaap_PreferredStockSharesAuthorized_e69616a5-ef14-4c0d-b84e-d5cfecf7727a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesIssued_35ee72bb-67e0-4ca4-aab4-5473ee767adb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PreferredStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7eddfe47-d6f1-43ba-8eb1-3e1f70f8bfff" xlink:to="loc_us-gaap_PreferredStockSharesIssued_35ee72bb-67e0-4ca4-aab4-5473ee767adb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesOutstanding_42440c4e-c676-43a4-a966-cffa186c942f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PreferredStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7eddfe47-d6f1-43ba-8eb1-3e1f70f8bfff" xlink:to="loc_us-gaap_PreferredStockSharesOutstanding_42440c4e-c676-43a4-a966-cffa186c942f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_14ff23cf-ceb2-4b27-a321-d96368134904" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7eddfe47-d6f1-43ba-8eb1-3e1f70f8bfff" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_14ff23cf-ceb2-4b27-a321-d96368134904" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_a1c6a969-dcc6-45e1-94f9-98347106c5b9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7eddfe47-d6f1-43ba-8eb1-3e1f70f8bfff" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_a1c6a969-dcc6-45e1-94f9-98347106c5b9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_145e8067-925b-4cba-bcd7-073d6847f600" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7eddfe47-d6f1-43ba-8eb1-3e1f70f8bfff" xlink:to="loc_us-gaap_CommonStockSharesIssued_145e8067-925b-4cba-bcd7-073d6847f600" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_7c7c07f0-fbad-41a3-862b-45138358857c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7eddfe47-d6f1-43ba-8eb1-3e1f70f8bfff" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_7c7c07f0-fbad-41a3-862b-45138358857c" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_e7027246-4096-4b7f-8ae0-c22a776a4344" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_7eddfe47-d6f1-43ba-8eb1-3e1f70f8bfff" xlink:to="loc_us-gaap_StatementTable_e7027246-4096-4b7f-8ae0-c22a776a4344" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_d6d828df-3481-4ea7-bfea-b16ff4cd056d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_e7027246-4096-4b7f-8ae0-c22a776a4344" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_d6d828df-3481-4ea7-bfea-b16ff4cd056d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_d6d828df-3481-4ea7-bfea-b16ff4cd056d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_d6d828df-3481-4ea7-bfea-b16ff4cd056d" xlink:to="loc_us-gaap_EquityComponentDomain_d6d828df-3481-4ea7-bfea-b16ff4cd056d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_5a18b6e5-42a6-4567-b8fb-105f72d0d732" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_d6d828df-3481-4ea7-bfea-b16ff4cd056d" xlink:to="loc_us-gaap_EquityComponentDomain_5a18b6e5-42a6-4567-b8fb-105f72d0d732" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockMember_cad44548-4a56-4bc1-a4c1-8918077f09e9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PreferredStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_5a18b6e5-42a6-4567-b8fb-105f72d0d732" xlink:to="loc_us-gaap_PreferredStockMember_cad44548-4a56-4bc1-a4c1-8918077f09e9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_968080f4-4294-4d9f-bfc2-e11b721dc7f2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_e7027246-4096-4b7f-8ae0-c22a776a4344" xlink:to="loc_us-gaap_StatementClassOfStockAxis_968080f4-4294-4d9f-bfc2-e11b721dc7f2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_968080f4-4294-4d9f-bfc2-e11b721dc7f2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_968080f4-4294-4d9f-bfc2-e11b721dc7f2" xlink:to="loc_us-gaap_ClassOfStockDomain_968080f4-4294-4d9f-bfc2-e11b721dc7f2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_a83ecb76-ba38-4dc1-bbba-b1f94119c18c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_968080f4-4294-4d9f-bfc2-e11b721dc7f2" xlink:to="loc_us-gaap_ClassOfStockDomain_a83ecb76-ba38-4dc1-bbba-b1f94119c18c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_0a793660-1a1e-4948-94bb-9d3e7716769a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_a83ecb76-ba38-4dc1-bbba-b1f94119c18c" xlink:to="loc_us-gaap_CommonClassAMember_0a793660-1a1e-4948-94bb-9d3e7716769a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassBMember_59dcaae3-b438-49d2-aea1-45be73f06bd3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonClassBMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_a83ecb76-ba38-4dc1-bbba-b1f94119c18c" xlink:to="loc_us-gaap_CommonClassBMember_59dcaae3-b438-49d2-aea1-45be73f06bd3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassCMember_2332aec9-19dd-450e-ac10-999329cfef90" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonClassCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_a83ecb76-ba38-4dc1-bbba-b1f94119c18c" xlink:to="loc_us-gaap_CommonClassCMember_2332aec9-19dd-450e-ac10-999329cfef90" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_CommonClassDMember_35e1f6d8-cb2a-46d3-80bb-7e52097acf6a" xlink:href="sats-20220630.xsd#sats_CommonClassDMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_a83ecb76-ba38-4dc1-bbba-b1f94119c18c" xlink:to="loc_sats_CommonClassDMember_35e1f6d8-cb2a-46d3-80bb-7e52097acf6a" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS" xlink:type="simple" xlink:href="sats-20220630.xsd#CONSOLIDATEDSTATEMENTSOFOPERATIONS"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS" xlink:type="extended" id="i171911768fe0422e83b4db0dfb1a2e67_CONSOLIDATEDSTATEMENTSOFOPERATIONS">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_78c347f8-9117-427d-b12e-fb3c505ae001" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_17cc0a28-2ff1-4737-aecf-cc367f1b67e0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_78c347f8-9117-427d-b12e-fb3c505ae001" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_17cc0a28-2ff1-4737-aecf-cc367f1b67e0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpensesAbstract_bd2c7b37-e837-4346-96ce-f2cd9f33c0fd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CostsAndExpensesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_78c347f8-9117-427d-b12e-fb3c505ae001" xlink:to="loc_us-gaap_CostsAndExpensesAbstract_bd2c7b37-e837-4346-96ce-f2cd9f33c0fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_4cef3916-09dd-4c97-8383-a59f39993dfc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_bd2c7b37-e837-4346-96ce-f2cd9f33c0fd" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_4cef3916-09dd-4c97-8383-a59f39993dfc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_247d51f0-5b92-402b-8abb-fe7a0db492e6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_bd2c7b37-e837-4346-96ce-f2cd9f33c0fd" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_247d51f0-5b92-402b-8abb-fe7a0db492e6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_e6dd0e6e-1b85-44b6-9034-c1e191851bcd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ResearchAndDevelopmentExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_bd2c7b37-e837-4346-96ce-f2cd9f33c0fd" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_e6dd0e6e-1b85-44b6-9034-c1e191851bcd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_426381eb-2f6e-45cf-b3fa-1ff920d5e3fd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_bd2c7b37-e837-4346-96ce-f2cd9f33c0fd" xlink:to="loc_us-gaap_DepreciationAndAmortization_426381eb-2f6e-45cf-b3fa-1ff920d5e3fd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_5fec3438-b6ca-48cd-b871-8f35664a2381" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ImpairmentOfLongLivedAssetsHeldForUse"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_bd2c7b37-e837-4346-96ce-f2cd9f33c0fd" xlink:to="loc_us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_5fec3438-b6ca-48cd-b871-8f35664a2381" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_19f8f21f-936c-4281-8cbc-ae807e11cc6f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CostsAndExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_bd2c7b37-e837-4346-96ce-f2cd9f33c0fd" xlink:to="loc_us-gaap_CostsAndExpenses_19f8f21f-936c-4281-8cbc-ae807e11cc6f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_5c0f6595-33a3-487f-9be2-1afe6a868822" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_78c347f8-9117-427d-b12e-fb3c505ae001" xlink:to="loc_us-gaap_OperatingIncomeLoss_5c0f6595-33a3-487f-9be2-1afe6a868822" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpenseAbstract_cfec4d89-9f86-4f23-9921-2d2838005780" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NonoperatingIncomeExpenseAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_78c347f8-9117-427d-b12e-fb3c505ae001" xlink:to="loc_us-gaap_NonoperatingIncomeExpenseAbstract_cfec4d89-9f86-4f23-9921-2d2838005780" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeNet_39b67a07-eeb6-4ae1-adaa-9dbab7b66b03" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InvestmentIncomeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_cfec4d89-9f86-4f23-9921-2d2838005780" xlink:to="loc_us-gaap_InvestmentIncomeNet_39b67a07-eeb6-4ae1-adaa-9dbab7b66b03" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_ef1123ff-7259-482b-af44-03dfb7ee83b1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_cfec4d89-9f86-4f23-9921-2d2838005780" xlink:to="loc_us-gaap_InterestExpense_ef1123ff-7259-482b-af44-03dfb7ee83b1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnInvestments_ec65ead7-dbba-4661-a2fe-f4f90f83e6e6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GainLossOnInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_cfec4d89-9f86-4f23-9921-2d2838005780" xlink:to="loc_us-gaap_GainLossOnInvestments_ec65ead7-dbba-4661-a2fe-f4f90f83e6e6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_403018b4-5c5b-4836-8a39-88c774999a6e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeLossFromEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_cfec4d89-9f86-4f23-9921-2d2838005780" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_403018b4-5c5b-4836-8a39-88c774999a6e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_0421e57b-322b-4721-82cc-ee1251e61ae2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ForeignCurrencyTransactionGainLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_cfec4d89-9f86-4f23-9921-2d2838005780" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_0421e57b-322b-4721-82cc-ee1251e61ae2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_7bd9d0e6-e50f-4c99-8a60-9865688cacf1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_cfec4d89-9f86-4f23-9921-2d2838005780" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_7bd9d0e6-e50f-4c99-8a60-9865688cacf1" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_TotalNonoperatingIncomeExpenseInterestAndDebtExpenseAndIncomeLossFromEquityMethodInvestments_6545b0ca-ce8d-4b7f-a279-7ed0cc65d72b" xlink:href="sats-20220630.xsd#sats_TotalNonoperatingIncomeExpenseInterestAndDebtExpenseAndIncomeLossFromEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_cfec4d89-9f86-4f23-9921-2d2838005780" xlink:to="loc_sats_TotalNonoperatingIncomeExpenseInterestAndDebtExpenseAndIncomeLossFromEquityMethodInvestments_6545b0ca-ce8d-4b7f-a279-7ed0cc65d72b" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_a647a4e5-1b70-4745-a11c-bdf4c2fd123c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_78c347f8-9117-427d-b12e-fb3c505ae001" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_a647a4e5-1b70-4745-a11c-bdf4c2fd123c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_cbfa1d73-7b3c-4bdf-8c56-0ff633506649" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_78c347f8-9117-427d-b12e-fb3c505ae001" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_cbfa1d73-7b3c-4bdf-8c56-0ff633506649" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_1cb3c00a-f7e4-40f6-aaf5-5f626d3f35aa" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_78c347f8-9117-427d-b12e-fb3c505ae001" xlink:to="loc_us-gaap_ProfitLoss_1cb3c00a-f7e4-40f6-aaf5-5f626d3f35aa" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossAttributableToNoncontrollingInterest_7673b158-0409-45f2-bacd-e415f56beb13" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeLossAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_78c347f8-9117-427d-b12e-fb3c505ae001" xlink:to="loc_us-gaap_IncomeLossAttributableToNoncontrollingInterest_7673b158-0409-45f2-bacd-e415f56beb13" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_48fac066-285e-48dc-b38e-bba76759636c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_78c347f8-9117-427d-b12e-fb3c505ae001" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_48fac066-285e-48dc-b38e-bba76759636c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_EarningsPerShareBasicAndDilutedEPSAbstract_3d9dbaf8-848d-47d3-a412-d1b2a2ace285" xlink:href="sats-20220630.xsd#sats_EarningsPerShareBasicAndDilutedEPSAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_78c347f8-9117-427d-b12e-fb3c505ae001" xlink:to="loc_sats_EarningsPerShareBasicAndDilutedEPSAbstract_3d9dbaf8-848d-47d3-a412-d1b2a2ace285" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_5c42b2f6-4d67-4ee7-bc18-bc4c6b8d9920" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sats_EarningsPerShareBasicAndDilutedEPSAbstract_3d9dbaf8-848d-47d3-a412-d1b2a2ace285" xlink:to="loc_us-gaap_EarningsPerShareBasic_5c42b2f6-4d67-4ee7-bc18-bc4c6b8d9920" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_3ff68fea-68c0-45e3-8fef-0784319f6582" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sats_EarningsPerShareBasicAndDilutedEPSAbstract_3d9dbaf8-848d-47d3-a412-d1b2a2ace285" xlink:to="loc_us-gaap_EarningsPerShareDiluted_3ff68fea-68c0-45e3-8fef-0784319f6582" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_608b35bb-5b0e-4209-8fcd-e4226d618d2d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_78c347f8-9117-427d-b12e-fb3c505ae001" xlink:to="loc_us-gaap_StatementTable_608b35bb-5b0e-4209-8fcd-e4226d618d2d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_d2984f8b-e3a8-473f-8230-3c72e6e4a0ae" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_608b35bb-5b0e-4209-8fcd-e4226d618d2d" xlink:to="loc_srt_ProductOrServiceAxis_d2984f8b-e3a8-473f-8230-3c72e6e4a0ae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_d2984f8b-e3a8-473f-8230-3c72e6e4a0ae_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_d2984f8b-e3a8-473f-8230-3c72e6e4a0ae" xlink:to="loc_srt_ProductsAndServicesDomain_d2984f8b-e3a8-473f-8230-3c72e6e4a0ae_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_ef955a32-9773-46d4-8614-421727311cb0" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_d2984f8b-e3a8-473f-8230-3c72e6e4a0ae" xlink:to="loc_srt_ProductsAndServicesDomain_ef955a32-9773-46d4-8614-421727311cb0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_ServicesAndOtherRevenueMember_e1a36b0b-be97-4aab-9c58-56bc9876d9e5" xlink:href="sats-20220630.xsd#sats_ServicesAndOtherRevenueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_ef955a32-9773-46d4-8614-421727311cb0" xlink:to="loc_sats_ServicesAndOtherRevenueMember_e1a36b0b-be97-4aab-9c58-56bc9876d9e5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductMember_2ee4bf4d-800f-42c9-97ca-fc38ac92cc22" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProductMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_ef955a32-9773-46d4-8614-421727311cb0" xlink:to="loc_us-gaap_ProductMember_2ee4bf4d-800f-42c9-97ca-fc38ac92cc22" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY" xlink:type="simple" xlink:href="sats-20220630.xsd#CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY" xlink:type="extended" id="i52ea5a1ad1ab444492ac2b1768e6aeef_CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_7d6b30d3-ef0d-42ab-b811-5b00bbc778a0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_229725bf-d023-4e58-9b26-185b451b3aa2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7d6b30d3-ef0d-42ab-b811-5b00bbc778a0" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_229725bf-d023-4e58-9b26-185b451b3aa2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_5157e6d7-3972-4c2d-af7c-c6964cd51dfe" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_229725bf-d023-4e58-9b26-185b451b3aa2" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_5157e6d7-3972-4c2d-af7c-c6964cd51dfe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharebasedCompensationAbstract_d7dbcb58-e66e-4f99-a0a5-46cec75f59d5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodSharebasedCompensationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_229725bf-d023-4e58-9b26-185b451b3aa2" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharebasedCompensationAbstract_d7dbcb58-e66e-4f99-a0a5-46cec75f59d5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueEmployeeBenefitPlan_a75f6e93-d4f4-4d37-b193-0d2b82ce0b2c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodValueEmployeeBenefitPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharebasedCompensationAbstract_d7dbcb58-e66e-4f99-a0a5-46cec75f59d5" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueEmployeeBenefitPlan_a75f6e93-d4f4-4d37-b193-0d2b82ce0b2c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_12109617-0f78-4fb3-80f9-7534f7bde9ac" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharebasedCompensationAbstract_d7dbcb58-e66e-4f99-a0a5-46cec75f59d5" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_12109617-0f78-4fb3-80f9-7534f7bde9ac" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_4460aa41-9715-411a-bae7-b5feec09f305" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharebasedCompensationAbstract_d7dbcb58-e66e-4f99-a0a5-46cec75f59d5" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_4460aa41-9715-411a-bae7-b5feec09f305" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance_bad3edb5-0dff-40da-9472-935788d9465e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_229725bf-d023-4e58-9b26-185b451b3aa2" xlink:to="loc_us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance_bad3edb5-0dff-40da-9472-935788d9465e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_AdjustmentsToAdditionalPaidInCapitalSharesIssuedAndAssetsContributedRelatedToJointVenture_cdc1e2f7-4fa0-4860-a4f6-9e39d8d16d7d" xlink:href="sats-20220630.xsd#sats_AdjustmentsToAdditionalPaidInCapitalSharesIssuedAndAssetsContributedRelatedToJointVenture"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_229725bf-d023-4e58-9b26-185b451b3aa2" xlink:to="loc_sats_AdjustmentsToAdditionalPaidInCapitalSharesIssuedAndAssetsContributedRelatedToJointVenture_cdc1e2f7-4fa0-4860-a4f6-9e39d8d16d7d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_OtherComprehensiveIncomeLossNetofTaxExcludingOtherEquityComponents_d2a7602d-5ba8-415d-af55-6fd7c45fcb6f" xlink:href="sats-20220630.xsd#sats_OtherComprehensiveIncomeLossNetofTaxExcludingOtherEquityComponents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_229725bf-d023-4e58-9b26-185b451b3aa2" xlink:to="loc_sats_OtherComprehensiveIncomeLossNetofTaxExcludingOtherEquityComponents_d2a7602d-5ba8-415d-af55-6fd7c45fcb6f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_c9937734-0863-4766-955f-d6eaefeb9a89" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_229725bf-d023-4e58-9b26-185b451b3aa2" xlink:to="loc_us-gaap_ProfitLoss_c9937734-0863-4766-955f-d6eaefeb9a89" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodValue_6555581d-496b-4ac8-abc1-86d0e1272bdb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockRepurchasedDuringPeriodValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_229725bf-d023-4e58-9b26-185b451b3aa2" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodValue_6555581d-496b-4ac8-abc1-86d0e1272bdb" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_AdjustmentsToAdditionalPaidInCapitalConsiderationFromRelatedPartyForTaxCreditsUtilized_b01d0589-3116-491b-b256-322717bd457e" xlink:href="sats-20220630.xsd#sats_AdjustmentsToAdditionalPaidInCapitalConsiderationFromRelatedPartyForTaxCreditsUtilized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_229725bf-d023-4e58-9b26-185b451b3aa2" xlink:to="loc_sats_AdjustmentsToAdditionalPaidInCapitalConsiderationFromRelatedPartyForTaxCreditsUtilized_b01d0589-3116-491b-b256-322717bd457e" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_a9a6557f-0607-4d5d-8444-4db965f943c6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_8739790d-9755-48f1-9366-61c8e2a9787f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_7d6b30d3-ef0d-42ab-b811-5b00bbc778a0" xlink:to="loc_us-gaap_StatementTable_8739790d-9755-48f1-9366-61c8e2a9787f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_06ff0872-11bc-44e1-b1c1-ef58d8f09513" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_8739790d-9755-48f1-9366-61c8e2a9787f" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_06ff0872-11bc-44e1-b1c1-ef58d8f09513" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_06ff0872-11bc-44e1-b1c1-ef58d8f09513_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_06ff0872-11bc-44e1-b1c1-ef58d8f09513" xlink:to="loc_us-gaap_EquityComponentDomain_06ff0872-11bc-44e1-b1c1-ef58d8f09513_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_f37e2089-78f2-43ef-80b0-4c5a7a91ea6e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_06ff0872-11bc-44e1-b1c1-ef58d8f09513" xlink:to="loc_us-gaap_EquityComponentDomain_f37e2089-78f2-43ef-80b0-4c5a7a91ea6e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_46e0d6e6-dfab-4fbe-b0e8-7716ba0ebb5f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_f37e2089-78f2-43ef-80b0-4c5a7a91ea6e" xlink:to="loc_us-gaap_CommonStockMember_46e0d6e6-dfab-4fbe-b0e8-7716ba0ebb5f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_cc3676a1-76b2-4fc3-b94c-ca30f95eeefd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_f37e2089-78f2-43ef-80b0-4c5a7a91ea6e" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_cc3676a1-76b2-4fc3-b94c-ca30f95eeefd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_6874a268-68d7-41e4-885a-ad4ef09a3f3f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_f37e2089-78f2-43ef-80b0-4c5a7a91ea6e" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_6874a268-68d7-41e4-885a-ad4ef09a3f3f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_836594be-5e28-4328-95ed-d06aca0be02b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_f37e2089-78f2-43ef-80b0-4c5a7a91ea6e" xlink:to="loc_us-gaap_RetainedEarningsMember_836594be-5e28-4328-95ed-d06aca0be02b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_419e8166-1c7c-406b-8e12-6f687e7aba9d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TreasuryStockCommonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_f37e2089-78f2-43ef-80b0-4c5a7a91ea6e" xlink:to="loc_us-gaap_TreasuryStockCommonMember_419e8166-1c7c-406b-8e12-6f687e7aba9d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_d33e8320-b1ba-40cf-b0f9-247da4df2216" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_f37e2089-78f2-43ef-80b0-4c5a7a91ea6e" xlink:to="loc_us-gaap_NoncontrollingInterestMember_d33e8320-b1ba-40cf-b0f9-247da4df2216" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/RevenueRecognitionScheduleofComponentsofContractBalancesDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#RevenueRecognitionScheduleofComponentsofContractBalancesDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/RevenueRecognitionScheduleofComponentsofContractBalancesDetails" xlink:type="extended" id="i99e2e9d4f07348f7a264851f1ab7ffc8_RevenueRecognitionScheduleofComponentsofContractBalancesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_81f2ff7d-5b21-488c-8300-53dc308f6b31" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableAdditionalDisclosuresAbstract_c07bef3c-f350-4cdd-baeb-b6d2cd4d95ec" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsReceivableAdditionalDisclosuresAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_81f2ff7d-5b21-488c-8300-53dc308f6b31" xlink:to="loc_us-gaap_AccountsReceivableAdditionalDisclosuresAbstract_c07bef3c-f350-4cdd-baeb-b6d2cd4d95ec" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableGrossCurrent_43dfe3a6-2082-495b-9fcb-a57dd1668669" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsReceivableGrossCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsReceivableAdditionalDisclosuresAbstract_c07bef3c-f350-4cdd-baeb-b6d2cd4d95ec" xlink:to="loc_us-gaap_AccountsReceivableGrossCurrent_43dfe3a6-2082-495b-9fcb-a57dd1668669" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetGross_0fb2979b-84ce-4841-bfa4-6fa1b624e772" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractWithCustomerAssetGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsReceivableAdditionalDisclosuresAbstract_c07bef3c-f350-4cdd-baeb-b6d2cd4d95ec" xlink:to="loc_us-gaap_ContractWithCustomerAssetGross_0fb2979b-84ce-4841-bfa4-6fa1b624e772" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_cee1b0ba-7cff-4678-90eb-10616c38d3a4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsReceivableAdditionalDisclosuresAbstract_c07bef3c-f350-4cdd-baeb-b6d2cd4d95ec" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_cee1b0ba-7cff-4678-90eb-10616c38d3a4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_350b1476-bb1f-4c7c-a276-23bb25236738" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsReceivableAdditionalDisclosuresAbstract_c07bef3c-f350-4cdd-baeb-b6d2cd4d95ec" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_350b1476-bb1f-4c7c-a276-23bb25236738" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityAbstract_2c2d86b0-8949-4e4f-9e18-a4b0b00cdf1a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractWithCustomerLiabilityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_81f2ff7d-5b21-488c-8300-53dc308f6b31" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityAbstract_2c2d86b0-8949-4e4f-9e18-a4b0b00cdf1a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_7350d023-87c9-48c7-a459-a2c2301074a8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ContractWithCustomerLiabilityAbstract_2c2d86b0-8949-4e4f-9e18-a4b0b00cdf1a" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_7350d023-87c9-48c7-a459-a2c2301074a8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_ca32cf8b-7fd0-42b7-8996-2583031f82a2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractWithCustomerLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ContractWithCustomerLiabilityAbstract_2c2d86b0-8949-4e4f-9e18-a4b0b00cdf1a" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_ca32cf8b-7fd0-42b7-8996-2583031f82a2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_606ef999-4d6f-462a-9f05-af48d6ad0a24" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractWithCustomerLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ContractWithCustomerLiabilityAbstract_2c2d86b0-8949-4e4f-9e18-a4b0b00cdf1a" xlink:to="loc_us-gaap_ContractWithCustomerLiability_606ef999-4d6f-462a-9f05-af48d6ad0a24" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_5cf36e44-5ce7-4cb5-b96b-a1aa713d0734" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_81f2ff7d-5b21-488c-8300-53dc308f6b31" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_5cf36e44-5ce7-4cb5-b96b-a1aa713d0734" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_15636ac4-6bd9-4cb5-ba5c-e07bae301150" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_81f2ff7d-5b21-488c-8300-53dc308f6b31" xlink:to="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_15636ac4-6bd9-4cb5-ba5c-e07bae301150" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_cbede11a-8bb2-4779-a981-f38c27d71021" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_15636ac4-6bd9-4cb5-ba5c-e07bae301150" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_cbede11a-8bb2-4779-a981-f38c27d71021" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_cbede11a-8bb2-4779-a981-f38c27d71021_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_cbede11a-8bb2-4779-a981-f38c27d71021" xlink:to="loc_us-gaap_ReceivableTypeDomain_cbede11a-8bb2-4779-a981-f38c27d71021_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_2ea9bf41-76e2-45ea-8600-d189ed3cf901" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_cbede11a-8bb2-4779-a981-f38c27d71021" xlink:to="loc_us-gaap_ReceivableTypeDomain_2ea9bf41-76e2-45ea-8600-d189ed3cf901" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeAccountsReceivableMember_7c40488b-cd1c-4000-9807-e99fdefacf56" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TradeAccountsReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_2ea9bf41-76e2-45ea-8600-d189ed3cf901" xlink:to="loc_us-gaap_TradeAccountsReceivableMember_7c40488b-cd1c-4000-9807-e99fdefacf56" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_LeaseReceivableMember_0621db26-52d9-421a-a756-7dabef02ee76" xlink:href="sats-20220630.xsd#sats_LeaseReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_2ea9bf41-76e2-45ea-8600-d189ed3cf901" xlink:to="loc_sats_LeaseReceivableMember_0621db26-52d9-421a-a756-7dabef02ee76" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/RevenueRecognitionNarrativeDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#RevenueRecognitionNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/RevenueRecognitionNarrativeDetails" xlink:type="extended" id="i023ee1cd5bcb4198af70d7e1e2de4c3e_RevenueRecognitionNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_44ff01b9-066a-4eab-8444-a729587d4479" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_93538664-2faf-4603-8b7d-aa0a9f8ad1a2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_44ff01b9-066a-4eab-8444-a729587d4479" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_93538664-2faf-4603-8b7d-aa0a9f8ad1a2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_2cbf6fd3-e712-4a70-953b-52109f813eb1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_44ff01b9-066a-4eab-8444-a729587d4479" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_2cbf6fd3-e712-4a70-953b-52109f813eb1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_1ce6dd5b-56e9-4083-ac53-f6f555ea8d65" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_44ff01b9-066a-4eab-8444-a729587d4479" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_1ce6dd5b-56e9-4083-ac53-f6f555ea8d65" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_fb645557-a65a-4954-8022-bb057d01ad39" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_44ff01b9-066a-4eab-8444-a729587d4479" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_fb645557-a65a-4954-8022-bb057d01ad39" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_d9179e52-be87-4dbc-a128-87b2f8084144" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_fb645557-a65a-4954-8022-bb057d01ad39" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_d9179e52-be87-4dbc-a128-87b2f8084144" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/RevenueRecognitionNarrativeDetails_1" xlink:type="simple" xlink:href="sats-20220630.xsd#RevenueRecognitionNarrativeDetails_1"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/RevenueRecognitionNarrativeDetails_1" xlink:type="extended" id="i03aacb25f0b149c2b5cf72a4bc1fb3d6_RevenueRecognitionNarrativeDetails_1">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_44ff01b9-066a-4eab-8444-a729587d4479" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_93538664-2faf-4603-8b7d-aa0a9f8ad1a2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_44ff01b9-066a-4eab-8444-a729587d4479" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_93538664-2faf-4603-8b7d-aa0a9f8ad1a2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_2cbf6fd3-e712-4a70-953b-52109f813eb1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_44ff01b9-066a-4eab-8444-a729587d4479" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_2cbf6fd3-e712-4a70-953b-52109f813eb1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_1ce6dd5b-56e9-4083-ac53-f6f555ea8d65" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_44ff01b9-066a-4eab-8444-a729587d4479" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_1ce6dd5b-56e9-4083-ac53-f6f555ea8d65" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_fb645557-a65a-4954-8022-bb057d01ad39" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_44ff01b9-066a-4eab-8444-a729587d4479" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_fb645557-a65a-4954-8022-bb057d01ad39" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/RevenueRecognitionScheduleofDisaggregationofRevenueDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#RevenueRecognitionScheduleofDisaggregationofRevenueDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/RevenueRecognitionScheduleofDisaggregationofRevenueDetails" xlink:type="extended" id="iec17c876a45c473ba80db5b0404d394c_RevenueRecognitionScheduleofDisaggregationofRevenueDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_d02060d2-14ca-4ac7-8e07-cba2d850d1bf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_2047791f-1887-49f9-8b85-be167b324e83" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_d02060d2-14ca-4ac7-8e07-cba2d850d1bf" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_2047791f-1887-49f9-8b85-be167b324e83" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_6272c120-6d1b-46ad-b126-d48cd7b48418" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_d02060d2-14ca-4ac7-8e07-cba2d850d1bf" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_6272c120-6d1b-46ad-b126-d48cd7b48418" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_8b126793-4623-4cf4-bdf5-b6b0846fa6fc" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_6272c120-6d1b-46ad-b126-d48cd7b48418" xlink:to="loc_srt_StatementGeographicalAxis_8b126793-4623-4cf4-bdf5-b6b0846fa6fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_8b126793-4623-4cf4-bdf5-b6b0846fa6fc_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_8b126793-4623-4cf4-bdf5-b6b0846fa6fc" xlink:to="loc_srt_SegmentGeographicalDomain_8b126793-4623-4cf4-bdf5-b6b0846fa6fc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_837c8f5d-f6f0-4f24-bf1f-16f10ab5e37e" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_8b126793-4623-4cf4-bdf5-b6b0846fa6fc" xlink:to="loc_srt_SegmentGeographicalDomain_837c8f5d-f6f0-4f24-bf1f-16f10ab5e37e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NorthAmericaMember_2fe0108c-ea07-41da-9879-7aac2814d98f" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_NorthAmericaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_837c8f5d-f6f0-4f24-bf1f-16f10ab5e37e" xlink:to="loc_srt_NorthAmericaMember_2fe0108c-ea07-41da-9879-7aac2814d98f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_SouthAndCentralAmericaMember_1647f57e-f036-4bf7-95bb-40622f3e8328" xlink:href="sats-20220630.xsd#sats_SouthAndCentralAmericaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_837c8f5d-f6f0-4f24-bf1f-16f10ab5e37e" xlink:to="loc_sats_SouthAndCentralAmericaMember_1647f57e-f036-4bf7-95bb-40622f3e8328" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_AllOtherGeographicSegmentsMember_b7f690cf-b536-4c1e-92e8-e62c4bcda84f" xlink:href="sats-20220630.xsd#sats_AllOtherGeographicSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_837c8f5d-f6f0-4f24-bf1f-16f10ab5e37e" xlink:to="loc_sats_AllOtherGeographicSegmentsMember_b7f690cf-b536-4c1e-92e8-e62c4bcda84f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_6ff26c18-005d-4537-b820-c74147825521" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_6272c120-6d1b-46ad-b126-d48cd7b48418" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_6ff26c18-005d-4537-b820-c74147825521" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_6ff26c18-005d-4537-b820-c74147825521_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_6ff26c18-005d-4537-b820-c74147825521" xlink:to="loc_us-gaap_SegmentDomain_6ff26c18-005d-4537-b820-c74147825521_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_a742b3d8-3303-41c0-aa69-8a4203c80dbb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_6ff26c18-005d-4537-b820-c74147825521" xlink:to="loc_us-gaap_SegmentDomain_a742b3d8-3303-41c0-aa69-8a4203c80dbb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_HughesBusinessSegmentMember_bd016c52-71a6-415e-95fb-a569ada8b445" xlink:href="sats-20220630.xsd#sats_HughesBusinessSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_a742b3d8-3303-41c0-aa69-8a4203c80dbb" xlink:to="loc_sats_HughesBusinessSegmentMember_bd016c52-71a6-415e-95fb-a569ada8b445" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_EchoStarSatelliteServicesBusinessMember_ea5de7f5-4ade-421c-b226-27d2f9e9414e" xlink:href="sats-20220630.xsd#sats_EchoStarSatelliteServicesBusinessMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_a742b3d8-3303-41c0-aa69-8a4203c80dbb" xlink:to="loc_sats_EchoStarSatelliteServicesBusinessMember_ea5de7f5-4ade-421c-b226-27d2f9e9414e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_d0026733-717a-4a03-a52a-6d461823df01" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_6272c120-6d1b-46ad-b126-d48cd7b48418" xlink:to="loc_srt_ConsolidationItemsAxis_d0026733-717a-4a03-a52a-6d461823df01" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_d0026733-717a-4a03-a52a-6d461823df01_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_d0026733-717a-4a03-a52a-6d461823df01" xlink:to="loc_srt_ConsolidationItemsDomain_d0026733-717a-4a03-a52a-6d461823df01_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_1399a1a0-74c7-4cff-84a9-bdce2e625b43" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_d0026733-717a-4a03-a52a-6d461823df01" xlink:to="loc_srt_ConsolidationItemsDomain_1399a1a0-74c7-4cff-84a9-bdce2e625b43" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_ed3822af-7afe-41f3-bc43-c515d6064db5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_1399a1a0-74c7-4cff-84a9-bdce2e625b43" xlink:to="loc_us-gaap_OperatingSegmentsMember_ed3822af-7afe-41f3-bc43-c515d6064db5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MaterialReconcilingItemsMember_d97f061f-2cba-4e6d-ae6d-c7ea05adf500" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MaterialReconcilingItemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_1399a1a0-74c7-4cff-84a9-bdce2e625b43" xlink:to="loc_us-gaap_MaterialReconcilingItemsMember_d97f061f-2cba-4e6d-ae6d-c7ea05adf500" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_b28f2c28-5bbc-4fb0-83fb-b1134579a41a" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_6272c120-6d1b-46ad-b126-d48cd7b48418" xlink:to="loc_srt_ProductOrServiceAxis_b28f2c28-5bbc-4fb0-83fb-b1134579a41a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_b28f2c28-5bbc-4fb0-83fb-b1134579a41a_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_b28f2c28-5bbc-4fb0-83fb-b1134579a41a" xlink:to="loc_srt_ProductsAndServicesDomain_b28f2c28-5bbc-4fb0-83fb-b1134579a41a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_fdba2140-d462-4860-a689-1c5c439bf72d" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_b28f2c28-5bbc-4fb0-83fb-b1134579a41a" xlink:to="loc_srt_ProductsAndServicesDomain_fdba2140-d462-4860-a689-1c5c439bf72d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_ServicesAndOtherRevenueMember_3229dd78-707b-4bdf-9376-2a1684592fa2" xlink:href="sats-20220630.xsd#sats_ServicesAndOtherRevenueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_fdba2140-d462-4860-a689-1c5c439bf72d" xlink:to="loc_sats_ServicesAndOtherRevenueMember_3229dd78-707b-4bdf-9376-2a1684592fa2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ServiceMember_752fb1d1-97df-45c7-8026-a0077810aabc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ServiceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sats_ServicesAndOtherRevenueMember_3229dd78-707b-4bdf-9376-2a1684592fa2" xlink:to="loc_us-gaap_ServiceMember_752fb1d1-97df-45c7-8026-a0077810aabc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_ServicesLeaseMember_f1d04cb7-22bf-4bc2-b502-e53084179f78" xlink:href="sats-20220630.xsd#sats_ServicesLeaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sats_ServicesAndOtherRevenueMember_3229dd78-707b-4bdf-9376-2a1684592fa2" xlink:to="loc_sats_ServicesLeaseMember_f1d04cb7-22bf-4bc2-b502-e53084179f78" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductMember_9b64943b-dd17-432a-b91d-aaa14d664cbe" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProductMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_fdba2140-d462-4860-a689-1c5c439bf72d" xlink:to="loc_us-gaap_ProductMember_9b64943b-dd17-432a-b91d-aaa14d664cbe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_EquipmentProductMember_642e4486-08d0-4299-bf06-eae43887e8d8" xlink:href="sats-20220630.xsd#sats_EquipmentProductMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductMember_9b64943b-dd17-432a-b91d-aaa14d664cbe" xlink:to="loc_sats_EquipmentProductMember_642e4486-08d0-4299-bf06-eae43887e8d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_ServicesDesignDevelopmentAndConstructionMember_0678640c-9f15-47a1-8c44-4e2bb0f40214" xlink:href="sats-20220630.xsd#sats_ServicesDesignDevelopmentAndConstructionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductMember_9b64943b-dd17-432a-b91d-aaa14d664cbe" xlink:to="loc_sats_ServicesDesignDevelopmentAndConstructionMember_0678640c-9f15-47a1-8c44-4e2bb0f40214" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_ProductLeaseMember_f42fa4d1-f25b-4040-bbde-3703bda54f00" xlink:href="sats-20220630.xsd#sats_ProductLeaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductMember_9b64943b-dd17-432a-b91d-aaa14d664cbe" xlink:to="loc_sats_ProductLeaseMember_f42fa4d1-f25b-4040-bbde-3703bda54f00" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/BusinessCombinationsNarrativeDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#BusinessCombinationsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/BusinessCombinationsNarrativeDetails" xlink:type="extended" id="ic158da7c817146a9882d6ccd732c82fb_BusinessCombinationsNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_52936199-0ec5-499e-abfc-87a403144947" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_6ab9fb32-1c02-448b-b21c-c75db24c9468" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_52936199-0ec5-499e-abfc-87a403144947" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_6ab9fb32-1c02-448b-b21c-c75db24c9468" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_fd9fab19-9d01-47b3-a9a1-31b806449759" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_52936199-0ec5-499e-abfc-87a403144947" xlink:to="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_fd9fab19-9d01-47b3-a9a1-31b806449759" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_05ca2cfc-1e6f-4aec-8a57-484896c78ede" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_52936199-0ec5-499e-abfc-87a403144947" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_05ca2cfc-1e6f-4aec-8a57-484896c78ede" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_3c75094b-a544-4713-ac8d-97bb436d0a00" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_52936199-0ec5-499e-abfc-87a403144947" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_3c75094b-a544-4713-ac8d-97bb436d0a00" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_f3b7da27-f036-4e4e-9397-f69994983d82" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_52936199-0ec5-499e-abfc-87a403144947" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_f3b7da27-f036-4e4e-9397-f69994983d82" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_d69801d7-e414-418f-a784-1aa417e15064" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_52936199-0ec5-499e-abfc-87a403144947" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_d69801d7-e414-418f-a784-1aa417e15064" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_4a994c7f-8957-4b58-9393-c78b583256dd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_52936199-0ec5-499e-abfc-87a403144947" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_4a994c7f-8957-4b58-9393-c78b583256dd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_9669bdae-f96b-4362-aa6c-bbd44f0dce71" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_4a994c7f-8957-4b58-9393-c78b583256dd" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_9669bdae-f96b-4362-aa6c-bbd44f0dce71" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_9669bdae-f96b-4362-aa6c-bbd44f0dce71_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_9669bdae-f96b-4362-aa6c-bbd44f0dce71" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_9669bdae-f96b-4362-aa6c-bbd44f0dce71_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_cd0f4afb-0789-4937-9875-a942de8d8e29" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_9669bdae-f96b-4362-aa6c-bbd44f0dce71" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_cd0f4afb-0789-4937-9875-a942de8d8e29" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_IndiaJointVentureMember_099a256f-f93e-47ad-b5fe-a370bc61d176" xlink:href="sats-20220630.xsd#sats_IndiaJointVentureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_cd0f4afb-0789-4937-9875-a942de8d8e29" xlink:to="loc_sats_IndiaJointVentureMember_099a256f-f93e-47ad-b5fe-a370bc61d176" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_77c3bc0b-68b4-48e6-a793-6a858828e14f" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_OwnershipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_4a994c7f-8957-4b58-9393-c78b583256dd" xlink:to="loc_srt_OwnershipAxis_77c3bc0b-68b4-48e6-a793-6a858828e14f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_77c3bc0b-68b4-48e6-a793-6a858828e14f_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_77c3bc0b-68b4-48e6-a793-6a858828e14f" xlink:to="loc_srt_OwnershipDomain_77c3bc0b-68b4-48e6-a793-6a858828e14f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_d0a712b3-2ecc-479b-8095-ac9893fe4438" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_77c3bc0b-68b4-48e6-a793-6a858828e14f" xlink:to="loc_srt_OwnershipDomain_d0a712b3-2ecc-479b-8095-ac9893fe4438" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_IndiaJVMember_37a877cb-36d0-4155-9cd6-c3ce2bb1b323" xlink:href="sats-20220630.xsd#sats_IndiaJVMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_d0a712b3-2ecc-479b-8095-ac9893fe4438" xlink:to="loc_sats_IndiaJVMember_37a877cb-36d0-4155-9cd6-c3ce2bb1b323" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_0c51c3e6-982d-422f-b960-577b9ba4a8dc" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_4a994c7f-8957-4b58-9393-c78b583256dd" xlink:to="loc_dei_LegalEntityAxis_0c51c3e6-982d-422f-b960-577b9ba4a8dc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_0c51c3e6-982d-422f-b960-577b9ba4a8dc_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_0c51c3e6-982d-422f-b960-577b9ba4a8dc" xlink:to="loc_dei_EntityDomain_0c51c3e6-982d-422f-b960-577b9ba4a8dc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_6ee94ac3-84d0-42e8-a315-c7173e58cfbe" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_0c51c3e6-982d-422f-b960-577b9ba4a8dc" xlink:to="loc_dei_EntityDomain_6ee94ac3-84d0-42e8-a315-c7173e58cfbe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_BhartiMember_0d50ccfd-2207-420c-a088-7ce3b8d4d2b5" xlink:href="sats-20220630.xsd#sats_BhartiMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_6ee94ac3-84d0-42e8-a315-c7173e58cfbe" xlink:to="loc_sats_BhartiMember_0d50ccfd-2207-420c-a088-7ce3b8d4d2b5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_9ff2de81-3e46-40f7-8b63-a2cfccac9db7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_4a994c7f-8957-4b58-9393-c78b583256dd" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_9ff2de81-3e46-40f7-8b63-a2cfccac9db7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_9ff2de81-3e46-40f7-8b63-a2cfccac9db7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_9ff2de81-3e46-40f7-8b63-a2cfccac9db7" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_9ff2de81-3e46-40f7-8b63-a2cfccac9db7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_d0badabe-ba0f-4f48-9cad-eb82bc0b461a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_9ff2de81-3e46-40f7-8b63-a2cfccac9db7" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_d0badabe-ba0f-4f48-9cad-eb82bc0b461a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_62dae0f9-8aa2-4e08-b675-c88a1e225259" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CustomerRelationshipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_d0badabe-ba0f-4f48-9cad-eb82bc0b461a" xlink:to="loc_us-gaap_CustomerRelationshipsMember_62dae0f9-8aa2-4e08-b675-c88a1e225259" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_9188d185-75d9-4036-b614-b2fbb7936d28" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_4a994c7f-8957-4b58-9393-c78b583256dd" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_9188d185-75d9-4036-b614-b2fbb7936d28" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_9188d185-75d9-4036-b614-b2fbb7936d28_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_9188d185-75d9-4036-b614-b2fbb7936d28" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_9188d185-75d9-4036-b614-b2fbb7936d28_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_7efe1370-2a03-4217-a87c-94d4682b617e" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_9188d185-75d9-4036-b614-b2fbb7936d28" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_7efe1370-2a03-4217-a87c-94d4682b617e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_IndiaJVMember_6e90a410-f41d-4cea-ace5-2c4ca486f8b1" xlink:href="sats-20220630.xsd#sats_IndiaJVMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_7efe1370-2a03-4217-a87c-94d4682b617e" xlink:to="loc_sats_IndiaJVMember_6e90a410-f41d-4cea-ace5-2c4ca486f8b1" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/BusinessCombinationsScheduleofRecognizedIdentifiedAssetsandLiabilitiesAssumedDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#BusinessCombinationsScheduleofRecognizedIdentifiedAssetsandLiabilitiesAssumedDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/BusinessCombinationsScheduleofRecognizedIdentifiedAssetsandLiabilitiesAssumedDetails" xlink:type="extended" id="i6474188473a941beb0a5d01955229d3b_BusinessCombinationsScheduleofRecognizedIdentifiedAssetsandLiabilitiesAssumedDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_47a72acf-fdd7-428b-9710-9f86069a6c92" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_bdbad6cd-a409-4717-b59f-76b6b73ae57a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_47a72acf-fdd7-428b-9710-9f86069a6c92" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_bdbad6cd-a409-4717-b59f-76b6b73ae57a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_1da40a28-6863-4d2c-836b-29cff3e9ad94" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_bdbad6cd-a409-4717-b59f-76b6b73ae57a" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_1da40a28-6863-4d2c-836b-29cff3e9ad94" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_59145e48-979a-4c12-8359-c0bd9767d738" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_bdbad6cd-a409-4717-b59f-76b6b73ae57a" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_59145e48-979a-4c12-8359-c0bd9767d738" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_6560e3c9-0757-4df8-a438-1b6a52630e9d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_bdbad6cd-a409-4717-b59f-76b6b73ae57a" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_6560e3c9-0757-4df8-a438-1b6a52630e9d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_9158047c-f46e-4488-88eb-4de0619c5da0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_bdbad6cd-a409-4717-b59f-76b6b73ae57a" xlink:to="loc_us-gaap_Goodwill_9158047c-f46e-4488-88eb-4de0619c5da0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_e83e36aa-6baf-4886-a551-0838fa9add53" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_bdbad6cd-a409-4717-b59f-76b6b73ae57a" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_e83e36aa-6baf-4886-a551-0838fa9add53" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAcquiredIncludingGoodwill_afa2c5a9-3316-4b3b-baa4-b11601a47e94" xlink:href="sats-20220630.xsd#sats_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAcquiredIncludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_bdbad6cd-a409-4717-b59f-76b6b73ae57a" xlink:to="loc_sats_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAcquiredIncludingGoodwill_afa2c5a9-3316-4b3b-baa4-b11601a47e94" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_bf8e3b43-0738-4c6d-b084-9d71fcd8bdc8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_47a72acf-fdd7-428b-9710-9f86069a6c92" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_bf8e3b43-0738-4c6d-b084-9d71fcd8bdc8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_82323033-b659-4102-b5ee-2c3efd741d73" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_bf8e3b43-0738-4c6d-b084-9d71fcd8bdc8" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_82323033-b659-4102-b5ee-2c3efd741d73" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedExpensesAndOtherCurrentLiabilities_320799a2-3b2d-4fc9-aa23-804f993895ab" xlink:href="sats-20220630.xsd#sats_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedExpensesAndOtherCurrentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_bf8e3b43-0738-4c6d-b084-9d71fcd8bdc8" xlink:to="loc_sats_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedExpensesAndOtherCurrentLiabilities_320799a2-3b2d-4fc9-aa23-804f993895ab" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_f78978b7-6f36-4909-b83b-ae81a3ba7d35" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_bf8e3b43-0738-4c6d-b084-9d71fcd8bdc8" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_f78978b7-6f36-4909-b83b-ae81a3ba7d35" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_6e2ddabc-b1c2-40d4-9f81-c94d4057d60c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_bf8e3b43-0738-4c6d-b084-9d71fcd8bdc8" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_6e2ddabc-b1c2-40d4-9f81-c94d4057d60c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_a03b1ada-2e9f-4cb3-b145-103de753bd8f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_47a72acf-fdd7-428b-9710-9f86069a6c92" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_a03b1ada-2e9f-4cb3-b145-103de753bd8f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_7c07af2d-ea4c-4c99-8f41-63f25c336a31" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_47a72acf-fdd7-428b-9710-9f86069a6c92" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_7c07af2d-ea4c-4c99-8f41-63f25c336a31" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_3a21b50d-7e19-4e30-95c5-acb667892d33" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_7c07af2d-ea4c-4c99-8f41-63f25c336a31" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_3a21b50d-7e19-4e30-95c5-acb667892d33" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_3a21b50d-7e19-4e30-95c5-acb667892d33_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_3a21b50d-7e19-4e30-95c5-acb667892d33" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_3a21b50d-7e19-4e30-95c5-acb667892d33_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_2c05b989-e89d-4d3f-9a71-7a2d1c34e6f9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_3a21b50d-7e19-4e30-95c5-acb667892d33" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_2c05b989-e89d-4d3f-9a71-7a2d1c34e6f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_IndiaJointVentureMember_2ff57af3-a73e-4320-b963-ef4560d9d603" xlink:href="sats-20220630.xsd#sats_IndiaJointVentureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_2c05b989-e89d-4d3f-9a71-7a2d1c34e6f9" xlink:to="loc_sats_IndiaJointVentureMember_2ff57af3-a73e-4320-b963-ef4560d9d603" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/EarningsPerShareAntidilutiveSecuritiesDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#EarningsPerShareAntidilutiveSecuritiesDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/EarningsPerShareAntidilutiveSecuritiesDetails" xlink:type="extended" id="i5647b03a9371485da8c93e9209748211_EarningsPerShareAntidilutiveSecuritiesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_73751456-5618-4ed1-a71d-948d4db4387a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_f30b7970-5b11-497d-ab72-a88e7165ae5e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_73751456-5618-4ed1-a71d-948d4db4387a" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_f30b7970-5b11-497d-ab72-a88e7165ae5e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_de8c9a73-c522-433a-b8ae-a0c3ab255208" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_73751456-5618-4ed1-a71d-948d4db4387a" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_de8c9a73-c522-433a-b8ae-a0c3ab255208" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_562a0d1e-456b-46ff-94d7-22cfbc55fabc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_de8c9a73-c522-433a-b8ae-a0c3ab255208" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_562a0d1e-456b-46ff-94d7-22cfbc55fabc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_562a0d1e-456b-46ff-94d7-22cfbc55fabc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_562a0d1e-456b-46ff-94d7-22cfbc55fabc" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_562a0d1e-456b-46ff-94d7-22cfbc55fabc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_7657ff73-2a0f-43db-8856-85e39193349b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_562a0d1e-456b-46ff-94d7-22cfbc55fabc" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_7657ff73-2a0f-43db-8856-85e39193349b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockCompensationPlanMember_b12da59d-2c50-4c7c-bccc-293b828bddf7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockCompensationPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_7657ff73-2a0f-43db-8856-85e39193349b" xlink:to="loc_us-gaap_StockCompensationPlanMember_b12da59d-2c50-4c7c-bccc-293b828bddf7" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/MarketableInvestmentSecuritiesScheduleofInvestmentsDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#MarketableInvestmentSecuritiesScheduleofInvestmentsDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/MarketableInvestmentSecuritiesScheduleofInvestmentsDetails" xlink:type="extended" id="id902152c92084178bc70e156177e1ed0_MarketableInvestmentSecuritiesScheduleofInvestmentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsLineItems_66d7614e-809c-498a-b167-57bd483e6e11" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketableSecuritiesAbstract_3bcf23da-6f82-459d-ac9c-0065dc90d809" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MarketableSecuritiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_66d7614e-809c-498a-b167-57bd483e6e11" xlink:to="loc_us-gaap_MarketableSecuritiesAbstract_3bcf23da-6f82-459d-ac9c-0065dc90d809" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAbstract_519087de-f677-4f96-adc2-181364b468ca" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtSecuritiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MarketableSecuritiesAbstract_3bcf23da-6f82-459d-ac9c-0065dc90d809" xlink:to="loc_us-gaap_DebtSecuritiesAbstract_519087de-f677-4f96-adc2-181364b468ca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_add3e442-0d5e-4c4a-9584-d57af59be87f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtSecuritiesAbstract_519087de-f677-4f96-adc2-181364b468ca" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_add3e442-0d5e-4c4a-9584-d57af59be87f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNi_45c90d0a-793f-408c-9027-78a32c9344b7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquitySecuritiesFvNi"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MarketableSecuritiesAbstract_3bcf23da-6f82-459d-ac9c-0065dc90d809" xlink:to="loc_us-gaap_EquitySecuritiesFvNi_45c90d0a-793f-408c-9027-78a32c9344b7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketableSecurities_f6369103-780f-4dc6-8a7b-b8ba1ef5292c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MarketableSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MarketableSecuritiesAbstract_3bcf23da-6f82-459d-ac9c-0065dc90d809" xlink:to="loc_us-gaap_MarketableSecurities_f6369103-780f-4dc6-8a7b-b8ba1ef5292c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleRestricted_91646860-c785-4574-b8b8-163806469a7a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtSecuritiesAvailableForSaleRestricted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_66d7614e-809c-498a-b167-57bd483e6e11" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleRestricted_91646860-c785-4574-b8b8-163806469a7a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketableSecuritiesCurrent_705687be-0e1d-4870-8c3e-742fdaa2cbdd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MarketableSecuritiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_66d7614e-809c-498a-b167-57bd483e6e11" xlink:to="loc_us-gaap_MarketableSecuritiesCurrent_705687be-0e1d-4870-8c3e-742fdaa2cbdd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsTable_6dff9ff3-5e9e-4f13-a618-56eb969ba1d0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_66d7614e-809c-498a-b167-57bd483e6e11" xlink:to="loc_us-gaap_ScheduleOfInvestmentsTable_6dff9ff3-5e9e-4f13-a618-56eb969ba1d0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_34b97ec3-a1aa-48ec-a03d-11a50e265f0e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfInvestmentsTable_6dff9ff3-5e9e-4f13-a618-56eb969ba1d0" xlink:to="loc_us-gaap_FinancialInstrumentAxis_34b97ec3-a1aa-48ec-a03d-11a50e265f0e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_34b97ec3-a1aa-48ec-a03d-11a50e265f0e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_34b97ec3-a1aa-48ec-a03d-11a50e265f0e" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_34b97ec3-a1aa-48ec-a03d-11a50e265f0e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_11a0f7d4-46b0-4d34-adc2-c91ac132be2e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_34b97ec3-a1aa-48ec-a03d-11a50e265f0e" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_11a0f7d4-46b0-4d34-adc2-c91ac132be2e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateBondSecuritiesMember_4cf31390-98d4-4f65-b6d5-80fd92f7dba5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CorporateBondSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_11a0f7d4-46b0-4d34-adc2-c91ac132be2e" xlink:to="loc_us-gaap_CorporateBondSecuritiesMember_4cf31390-98d4-4f65-b6d5-80fd92f7dba5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPaperMember_2a342f51-13e7-4fdb-977a-fabb5f337e12" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommercialPaperMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_11a0f7d4-46b0-4d34-adc2-c91ac132be2e" xlink:to="loc_us-gaap_CommercialPaperMember_2a342f51-13e7-4fdb-977a-fabb5f337e12" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherDebtSecuritiesMember_3d5e0aec-310b-4353-af5d-d7cb66eb1c75" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_11a0f7d4-46b0-4d34-adc2-c91ac132be2e" xlink:to="loc_us-gaap_OtherDebtSecuritiesMember_3d5e0aec-310b-4353-af5d-d7cb66eb1c75" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/MarketableInvestmentSecuritiesScheduleofUnrealizedGainsLossesonAvailableforSaleSecuritiesDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#MarketableInvestmentSecuritiesScheduleofUnrealizedGainsLossesonAvailableforSaleSecuritiesDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/MarketableInvestmentSecuritiesScheduleofUnrealizedGainsLossesonAvailableforSaleSecuritiesDetails" xlink:type="extended" id="idb224d65576a4fb9924c6338fb794b83_MarketableInvestmentSecuritiesScheduleofUnrealizedGainsLossesonAvailableforSaleSecuritiesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsLineItems_dd8892d4-7fab-47d1-90b4-bd6faf5b93a2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_d6a9048f-fb42-425b-a6a5-1b05c74ac399" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_dd8892d4-7fab-47d1-90b4-bd6faf5b93a2" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_d6a9048f-fb42-425b-a6a5-1b05c74ac399" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss_955b23d6-3e1c-4ddf-95ce-63d11b4e078b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_d6a9048f-fb42-425b-a6a5-1b05c74ac399" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss_955b23d6-3e1c-4ddf-95ce-63d11b4e078b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_e9295e32-bcac-4f33-bd3d-fc1e0c928175" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_d6a9048f-fb42-425b-a6a5-1b05c74ac399" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_e9295e32-bcac-4f33-bd3d-fc1e0c928175" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_18c5378c-7bf1-40bf-bc35-5b5450bb6973" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_d6a9048f-fb42-425b-a6a5-1b05c74ac399" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_18c5378c-7bf1-40bf-bc35-5b5450bb6973" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_f4c16c8e-d92a-4e93-9b35-b30c2e41ab42" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_d6a9048f-fb42-425b-a6a5-1b05c74ac399" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_f4c16c8e-d92a-4e93-9b35-b30c2e41ab42" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsTable_db8b40a2-429f-476c-96c9-48c8444f3dda" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_dd8892d4-7fab-47d1-90b4-bd6faf5b93a2" xlink:to="loc_us-gaap_ScheduleOfInvestmentsTable_db8b40a2-429f-476c-96c9-48c8444f3dda" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_bbc7dc18-2a32-42e0-bcc4-2b9d75912b99" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfInvestmentsTable_db8b40a2-429f-476c-96c9-48c8444f3dda" xlink:to="loc_us-gaap_FinancialInstrumentAxis_bbc7dc18-2a32-42e0-bcc4-2b9d75912b99" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_bbc7dc18-2a32-42e0-bcc4-2b9d75912b99_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_bbc7dc18-2a32-42e0-bcc4-2b9d75912b99" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_bbc7dc18-2a32-42e0-bcc4-2b9d75912b99_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2a37c99f-f727-4291-9277-2a6f162486d1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_bbc7dc18-2a32-42e0-bcc4-2b9d75912b99" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2a37c99f-f727-4291-9277-2a6f162486d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_CorporateBondSecuritiesFairValueOptionMember_c287f7a1-77e3-43fd-822d-b1afdd95a822" xlink:href="sats-20220630.xsd#sats_CorporateBondSecuritiesFairValueOptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2a37c99f-f727-4291-9277-2a6f162486d1" xlink:to="loc_sats_CorporateBondSecuritiesFairValueOptionMember_c287f7a1-77e3-43fd-822d-b1afdd95a822" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPaperMember_07c763c2-7c12-48bb-a357-26c65544dd3f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommercialPaperMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2a37c99f-f727-4291-9277-2a6f162486d1" xlink:to="loc_us-gaap_CommercialPaperMember_07c763c2-7c12-48bb-a357-26c65544dd3f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherDebtSecuritiesMember_0434ba6f-404f-4652-9ec7-549b0aff3269" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2a37c99f-f727-4291-9277-2a6f162486d1" xlink:to="loc_us-gaap_OtherDebtSecuritiesMember_0434ba6f-404f-4652-9ec7-549b0aff3269" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/MarketableInvestmentSecuritiesNarrativeDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#MarketableInvestmentSecuritiesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/MarketableInvestmentSecuritiesNarrativeDetails" xlink:type="extended" id="i03527e8e888649e4bd45e725f1253fa1_MarketableInvestmentSecuritiesNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_ee4c0e66-f639-45ee-9ca0-44822cd55dc4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketableSecuritiesCurrent_3b7d3574-c30b-464d-be7e-581f2dc46ed6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MarketableSecuritiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_ee4c0e66-f639-45ee-9ca0-44822cd55dc4" xlink:to="loc_us-gaap_MarketableSecuritiesCurrent_3b7d3574-c30b-464d-be7e-581f2dc46ed6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_76e70a3f-44ca-4515-b948-bf8a51e5c7ab" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_ee4c0e66-f639-45ee-9ca0-44822cd55dc4" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_76e70a3f-44ca-4515-b948-bf8a51e5c7ab" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_59874060-a0dd-4761-b13f-6fd6d9f4752d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_76e70a3f-44ca-4515-b948-bf8a51e5c7ab" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_59874060-a0dd-4761-b13f-6fd6d9f4752d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_59874060-a0dd-4761-b13f-6fd6d9f4752d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_59874060-a0dd-4761-b13f-6fd6d9f4752d" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_59874060-a0dd-4761-b13f-6fd6d9f4752d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_f383bb82-9647-44fb-89a9-7c2de9c03d18" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_59874060-a0dd-4761-b13f-6fd6d9f4752d" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_f383bb82-9647-44fb-89a9-7c2de9c03d18" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_51e0002c-810a-49f1-94b4-400ff7b97ad7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_f383bb82-9647-44fb-89a9-7c2de9c03d18" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_51e0002c-810a-49f1-94b4-400ff7b97ad7" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/MarketableInvestmentSecuritiesScheduleofFairValueMeasurementsDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#MarketableInvestmentSecuritiesScheduleofFairValueMeasurementsDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/MarketableInvestmentSecuritiesScheduleofFairValueMeasurementsDetails" xlink:type="extended" id="i0a8531299fa8460d9005300aff1c97a5_MarketableInvestmentSecuritiesScheduleofFairValueMeasurementsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_628aa390-e5e8-4024-9bb1-ca2bc4a37e78" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_CashAndCashEquivalentsAndRestrictedCashAndCashEquivalentsFairValueDisclosure_37a46052-a8b8-4771-b88d-967ae8a9305b" xlink:href="sats-20220630.xsd#sats_CashAndCashEquivalentsAndRestrictedCashAndCashEquivalentsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_628aa390-e5e8-4024-9bb1-ca2bc4a37e78" xlink:to="loc_sats_CashAndCashEquivalentsAndRestrictedCashAndCashEquivalentsFairValueDisclosure_37a46052-a8b8-4771-b88d-967ae8a9305b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_27000042-6d4c-4957-b68c-aff9ce4d9794" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_628aa390-e5e8-4024-9bb1-ca2bc4a37e78" xlink:to="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_27000042-6d4c-4957-b68c-aff9ce4d9794" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_c990cf5f-b996-4c14-b850-32745238a765" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_27000042-6d4c-4957-b68c-aff9ce4d9794" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_c990cf5f-b996-4c14-b850-32745238a765" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNi_8d962430-c264-437a-8c43-5eeb6c60d94a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquitySecuritiesFvNi"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_27000042-6d4c-4957-b68c-aff9ce4d9794" xlink:to="loc_us-gaap_EquitySecuritiesFvNi_8d962430-c264-437a-8c43-5eeb6c60d94a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketableSecurities_59426dff-6959-4ba9-abf0-bc925d7e8270" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MarketableSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_27000042-6d4c-4957-b68c-aff9ce4d9794" xlink:to="loc_us-gaap_MarketableSecurities_59426dff-6959-4ba9-abf0-bc925d7e8270" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleRestricted_72ec20f8-c2f7-4978-8031-6fbd18b78152" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtSecuritiesAvailableForSaleRestricted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_628aa390-e5e8-4024-9bb1-ca2bc4a37e78" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleRestricted_72ec20f8-c2f7-4978-8031-6fbd18b78152" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketableSecuritiesCurrent_f571b366-7b31-403f-89f2-0988d2e61504" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MarketableSecuritiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_628aa390-e5e8-4024-9bb1-ca2bc4a37e78" xlink:to="loc_us-gaap_MarketableSecuritiesCurrent_f571b366-7b31-403f-89f2-0988d2e61504" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5b8d444c-fb2c-4c47-91a9-7ea8b1d9ba4d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_628aa390-e5e8-4024-9bb1-ca2bc4a37e78" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5b8d444c-fb2c-4c47-91a9-7ea8b1d9ba4d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_e48d44aa-5008-4603-9e9f-dc7beb821d9c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5b8d444c-fb2c-4c47-91a9-7ea8b1d9ba4d" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_e48d44aa-5008-4603-9e9f-dc7beb821d9c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e48d44aa-5008-4603-9e9f-dc7beb821d9c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_e48d44aa-5008-4603-9e9f-dc7beb821d9c" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e48d44aa-5008-4603-9e9f-dc7beb821d9c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3c37ec6f-6344-4718-86c5-dc718d000929" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_e48d44aa-5008-4603-9e9f-dc7beb821d9c" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3c37ec6f-6344-4718-86c5-dc718d000929" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_b8894816-1e5a-4652-bf7f-7c35745efa66" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3c37ec6f-6344-4718-86c5-dc718d000929" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_b8894816-1e5a-4652-bf7f-7c35745efa66" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_57449062-1080-4e9b-a0b3-b533298bf482" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3c37ec6f-6344-4718-86c5-dc718d000929" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_57449062-1080-4e9b-a0b3-b533298bf482" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_4ae8d063-8e4a-4d7e-9881-1f711d7dbae7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5b8d444c-fb2c-4c47-91a9-7ea8b1d9ba4d" xlink:to="loc_us-gaap_FinancialInstrumentAxis_4ae8d063-8e4a-4d7e-9881-1f711d7dbae7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_4ae8d063-8e4a-4d7e-9881-1f711d7dbae7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_4ae8d063-8e4a-4d7e-9881-1f711d7dbae7" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_4ae8d063-8e4a-4d7e-9881-1f711d7dbae7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_0d795b7e-8e05-41dd-83fa-07cc9d34a1f0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_4ae8d063-8e4a-4d7e-9881-1f711d7dbae7" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_0d795b7e-8e05-41dd-83fa-07cc9d34a1f0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateBondSecuritiesMember_76608a36-9cf6-4917-8902-be1a9b93448b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CorporateBondSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_0d795b7e-8e05-41dd-83fa-07cc9d34a1f0" xlink:to="loc_us-gaap_CorporateBondSecuritiesMember_76608a36-9cf6-4917-8902-be1a9b93448b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPaperMember_a8113083-a700-439c-8837-17b479488886" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommercialPaperMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_0d795b7e-8e05-41dd-83fa-07cc9d34a1f0" xlink:to="loc_us-gaap_CommercialPaperMember_a8113083-a700-439c-8837-17b479488886" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherDebtSecuritiesMember_e40bb1fb-bfd4-4535-ae1f-9edb3ffd7ecf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_0d795b7e-8e05-41dd-83fa-07cc9d34a1f0" xlink:to="loc_us-gaap_OtherDebtSecuritiesMember_e40bb1fb-bfd4-4535-ae1f-9edb3ffd7ecf" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/PropertyandEquipmentMajorAssetClassDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#PropertyandEquipmentMajorAssetClassDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/PropertyandEquipmentMajorAssetClassDetails" xlink:type="extended" id="i646e462159e44cceace964fd2164cc9d_PropertyandEquipmentMajorAssetClassDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_28dfa255-4308-483c-ae40-9159cdff5931" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortizationAbstract_8c9d52ae-ee5b-4b2a-9ad4-671833a2e224" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortizationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_28dfa255-4308-483c-ae40-9159cdff5931" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortizationAbstract_8c9d52ae-ee5b-4b2a-9ad4-671833a2e224" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_0b24597f-adf3-4bb3-8f35-4b28c535e494" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortizationAbstract_8c9d52ae-ee5b-4b2a-9ad4-671833a2e224" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_0b24597f-adf3-4bb3-8f35-4b28c535e494" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_55bdc61e-5db6-4db4-afdf-a5719ad6dda3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_28dfa255-4308-483c-ae40-9159cdff5931" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_55bdc61e-5db6-4db4-afdf-a5719ad6dda3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_0d90dd08-1dec-43c7-a825-4002d4665b9f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_55bdc61e-5db6-4db4-afdf-a5719ad6dda3" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_0d90dd08-1dec-43c7-a825-4002d4665b9f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_0d90dd08-1dec-43c7-a825-4002d4665b9f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_0d90dd08-1dec-43c7-a825-4002d4665b9f" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_0d90dd08-1dec-43c7-a825-4002d4665b9f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_667685a1-3ac9-4fa4-96b2-90851763626c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_0d90dd08-1dec-43c7-a825-4002d4665b9f" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_667685a1-3ac9-4fa4-96b2-90851763626c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_SatellitesMember_a8b40b34-49fd-4b9f-9562-cba23a079c00" xlink:href="sats-20220630.xsd#sats_SatellitesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_667685a1-3ac9-4fa4-96b2-90851763626c" xlink:to="loc_sats_SatellitesMember_a8b40b34-49fd-4b9f-9562-cba23a079c00" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentOtherTypesMember_d76d25a1-9061-4cc5-ac1a-05e718f8bd93" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentOtherTypesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_667685a1-3ac9-4fa4-96b2-90851763626c" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentOtherTypesMember_d76d25a1-9061-4cc5-ac1a-05e718f8bd93" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/PropertyandEquipmentNarrativeDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#PropertyandEquipmentNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/PropertyandEquipmentNarrativeDetails" xlink:type="extended" id="icf8b25d77369483ea5e4e79a900ed0d7_PropertyandEquipmentNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_d5f79576-c1d0-4bed-b941-1f8ff514ae95" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_NumberOfSatellitesInGeostationaryOrbitUtilizedByReportingEntity_6b5b7d5e-f3e6-45d2-b15b-6dfdafde9ff0" xlink:href="sats-20220630.xsd#sats_NumberOfSatellitesInGeostationaryOrbitUtilizedByReportingEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_d5f79576-c1d0-4bed-b941-1f8ff514ae95" xlink:to="loc_sats_NumberOfSatellitesInGeostationaryOrbitUtilizedByReportingEntity_6b5b7d5e-f3e6-45d2-b15b-6dfdafde9ff0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_FinanceLeaseRightOfUseAssetNumberOfUnits_1b83b5fe-ceb6-4869-bded-f7b6a44a8ac8" xlink:href="sats-20220630.xsd#sats_FinanceLeaseRightOfUseAssetNumberOfUnits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_d5f79576-c1d0-4bed-b941-1f8ff514ae95" xlink:to="loc_sats_FinanceLeaseRightOfUseAssetNumberOfUnits_1b83b5fe-ceb6-4869-bded-f7b6a44a8ac8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_SatellitesinGeosynchronousOrbitLengthAboveEquator_4d848735-36cd-4252-ba99-6d944cdd8493" xlink:href="sats-20220630.xsd#sats_SatellitesinGeosynchronousOrbitLengthAboveEquator"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_d5f79576-c1d0-4bed-b941-1f8ff514ae95" xlink:to="loc_sats_SatellitesinGeosynchronousOrbitLengthAboveEquator_4d848735-36cd-4252-ba99-6d944cdd8493" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractualObligation_81cdae4c-3f5c-4106-a99e-0f6fb4426295" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractualObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_d5f79576-c1d0-4bed-b941-1f8ff514ae95" xlink:to="loc_us-gaap_ContractualObligation_81cdae4c-3f5c-4106-a99e-0f6fb4426295" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisObligations_0a48bb01-43ca-43b8-a1b9-b14010f2e298" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_d5f79576-c1d0-4bed-b941-1f8ff514ae95" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisObligations_0a48bb01-43ca-43b8-a1b9-b14010f2e298" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_078b80a1-2cc9-4994-929f-1486553ecdc5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_d5f79576-c1d0-4bed-b941-1f8ff514ae95" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_078b80a1-2cc9-4994-929f-1486553ecdc5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_ea0f6509-6977-4c96-a594-2a26fade5690" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_078b80a1-2cc9-4994-929f-1486553ecdc5" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_ea0f6509-6977-4c96-a594-2a26fade5690" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_ea0f6509-6977-4c96-a594-2a26fade5690_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_ea0f6509-6977-4c96-a594-2a26fade5690" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_ea0f6509-6977-4c96-a594-2a26fade5690_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_ca9040e6-97d7-45cc-86aa-45e699e94d02" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_ea0f6509-6977-4c96-a594-2a26fade5690" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_ca9040e6-97d7-45cc-86aa-45e699e94d02" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_SatellitesMember_8602d7f9-7deb-4aa5-9720-2216e4e65393" xlink:href="sats-20220630.xsd#sats_SatellitesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_ca9040e6-97d7-45cc-86aa-45e699e94d02" xlink:to="loc_sats_SatellitesMember_8602d7f9-7deb-4aa5-9720-2216e4e65393" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_SatellitesOwnedMember_b446d5a1-2b3f-4fd6-8e09-25a777b03d18" xlink:href="sats-20220630.xsd#sats_SatellitesOwnedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sats_SatellitesMember_8602d7f9-7deb-4aa5-9720-2216e4e65393" xlink:to="loc_sats_SatellitesOwnedMember_b446d5a1-2b3f-4fd6-8e09-25a777b03d18" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_SatellitesLeasedMember_779eeb0d-7a24-4481-9cdc-7186a79980fd" xlink:href="sats-20220630.xsd#sats_SatellitesLeasedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sats_SatellitesMember_8602d7f9-7deb-4aa5-9720-2216e4e65393" xlink:to="loc_sats_SatellitesLeasedMember_779eeb0d-7a24-4481-9cdc-7186a79980fd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsAxis_9df45263-9a89-4459-94b0-7481bd04113f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherCommitmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_078b80a1-2cc9-4994-929f-1486553ecdc5" xlink:to="loc_us-gaap_OtherCommitmentsAxis_9df45263-9a89-4459-94b0-7481bd04113f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsDomain_9df45263-9a89-4459-94b0-7481bd04113f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherCommitmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_OtherCommitmentsAxis_9df45263-9a89-4459-94b0-7481bd04113f" xlink:to="loc_us-gaap_OtherCommitmentsDomain_9df45263-9a89-4459-94b0-7481bd04113f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsDomain_3b5108ec-4eb7-493e-bfd1-1a1098e25003" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherCommitmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_OtherCommitmentsAxis_9df45263-9a89-4459-94b0-7481bd04113f" xlink:to="loc_us-gaap_OtherCommitmentsDomain_3b5108ec-4eb7-493e-bfd1-1a1098e25003" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_SatelliteRelatedObligationMember_a6de7b32-fe40-4040-a19a-08a98dd7487d" xlink:href="sats-20220630.xsd#sats_SatelliteRelatedObligationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsDomain_3b5108ec-4eb7-493e-bfd1-1a1098e25003" xlink:to="loc_sats_SatelliteRelatedObligationMember_a6de7b32-fe40-4040-a19a-08a98dd7487d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a802e178-db5c-4f45-bacf-5c0708dfbba3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_078b80a1-2cc9-4994-929f-1486553ecdc5" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a802e178-db5c-4f45-bacf-5c0708dfbba3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_a802e178-db5c-4f45-bacf-5c0708dfbba3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a802e178-db5c-4f45-bacf-5c0708dfbba3" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_a802e178-db5c-4f45-bacf-5c0708dfbba3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e9001c01-0ba9-4cff-8ed5-8aa824aa3522" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a802e178-db5c-4f45-bacf-5c0708dfbba3" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e9001c01-0ba9-4cff-8ed5-8aa824aa3522" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_426c8ff0-619e-47a1-9d84-d554de36d5c9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e9001c01-0ba9-4cff-8ed5-8aa824aa3522" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_426c8ff0-619e-47a1-9d84-d554de36d5c9" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/PropertyandEquipmentScheduleofSatellitesDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#PropertyandEquipmentScheduleofSatellitesDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/PropertyandEquipmentScheduleofSatellitesDetails" xlink:type="extended" id="i5a058c0b1917421b9d522eaf45394c3b_PropertyandEquipmentScheduleofSatellitesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_bf5206ae-5a1b-4167-af4f-a3628453a131" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_aebdf3ed-c5df-4f59-8d83-8367bec67365" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_bf5206ae-5a1b-4167-af4f-a3628453a131" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_aebdf3ed-c5df-4f59-8d83-8367bec67365" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_837daef2-4ece-4d3b-8d0c-7ad65ae8199d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_bf5206ae-5a1b-4167-af4f-a3628453a131" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_837daef2-4ece-4d3b-8d0c-7ad65ae8199d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_24e95e48-4e9d-4fb6-b6a9-2491a2adcd6c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_837daef2-4ece-4d3b-8d0c-7ad65ae8199d" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_24e95e48-4e9d-4fb6-b6a9-2491a2adcd6c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_24e95e48-4e9d-4fb6-b6a9-2491a2adcd6c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_24e95e48-4e9d-4fb6-b6a9-2491a2adcd6c" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_24e95e48-4e9d-4fb6-b6a9-2491a2adcd6c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4d1f3f8f-3830-4ee9-bf28-795e31569c76" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_24e95e48-4e9d-4fb6-b6a9-2491a2adcd6c" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4d1f3f8f-3830-4ee9-bf28-795e31569c76" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_SPACEWAY3Member_ea36b397-2df0-4e33-aad5-e8e2ef9837b3" xlink:href="sats-20220630.xsd#sats_SPACEWAY3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4d1f3f8f-3830-4ee9-bf28-795e31569c76" xlink:to="loc_sats_SPACEWAY3Member_ea36b397-2df0-4e33-aad5-e8e2ef9837b3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_EchoStarXVIIMember_3f819f91-ce15-4768-a3dd-99a48d054b1b" xlink:href="sats-20220630.xsd#sats_EchoStarXVIIMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4d1f3f8f-3830-4ee9-bf28-795e31569c76" xlink:to="loc_sats_EchoStarXVIIMember_3f819f91-ce15-4768-a3dd-99a48d054b1b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_EchoStarXIXMember_ae3c0208-401e-4142-967a-548005d6f4f2" xlink:href="sats-20220630.xsd#sats_EchoStarXIXMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4d1f3f8f-3830-4ee9-bf28-795e31569c76" xlink:to="loc_sats_EchoStarXIXMember_ae3c0208-401e-4142-967a-548005d6f4f2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_AlYah3Member_f4f64ad2-ae53-42bb-b6ab-92b3104e9d58" xlink:href="sats-20220630.xsd#sats_AlYah3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4d1f3f8f-3830-4ee9-bf28-795e31569c76" xlink:to="loc_sats_AlYah3Member_f4f64ad2-ae53-42bb-b6ab-92b3104e9d58" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_EchoStarIXMember_46ac6b24-2ee6-4634-9f63-2143d6633d06" xlink:href="sats-20220630.xsd#sats_EchoStarIXMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4d1f3f8f-3830-4ee9-bf28-795e31569c76" xlink:to="loc_sats_EchoStarIXMember_46ac6b24-2ee6-4634-9f63-2143d6633d06" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_EchoStarXXIMember_085a26e7-4d2c-4648-888d-7843323366c3" xlink:href="sats-20220630.xsd#sats_EchoStarXXIMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4d1f3f8f-3830-4ee9-bf28-795e31569c76" xlink:to="loc_sats_EchoStarXXIMember_085a26e7-4d2c-4648-888d-7843323366c3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_Eutelsat65WestAMember_c0e47049-99a9-458f-b8e8-68b532cfdd7e" xlink:href="sats-20220630.xsd#sats_Eutelsat65WestAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4d1f3f8f-3830-4ee9-bf28-795e31569c76" xlink:to="loc_sats_Eutelsat65WestAMember_c0e47049-99a9-458f-b8e8-68b532cfdd7e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_Telesat19VsatelliteMember_3b339580-4911-406a-8edb-080a2e8b653e" xlink:href="sats-20220630.xsd#sats_Telesat19VsatelliteMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4d1f3f8f-3830-4ee9-bf28-795e31569c76" xlink:to="loc_sats_Telesat19VsatelliteMember_3b339580-4911-406a-8edb-080a2e8b653e" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_EchoStar105SES11Member_250d2591-61e7-4a30-b311-fb30ca40a068" xlink:href="sats-20220630.xsd#sats_EchoStar105SES11Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4d1f3f8f-3830-4ee9-bf28-795e31569c76" xlink:to="loc_sats_EchoStar105SES11Member_250d2591-61e7-4a30-b311-fb30ca40a068" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/PropertyandEquipmentScheduleofPropertyPlantandEquipmentDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#PropertyandEquipmentScheduleofPropertyPlantandEquipmentDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/PropertyandEquipmentScheduleofPropertyPlantandEquipmentDetails" xlink:type="extended" id="i83320f6d29964f64ae93ff4afd5660a3_PropertyandEquipmentScheduleofPropertyPlantandEquipmentDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_4ae0d033-c7b1-42df-bf13-52b866e14717" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_43926a5c-9dd5-42c6-b451-80fc1628ee3b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_4ae0d033-c7b1-42df-bf13-52b866e14717" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_43926a5c-9dd5-42c6-b451-80fc1628ee3b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_dc6a9a19-7ce2-4d35-91ad-12c843c231c5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_4ae0d033-c7b1-42df-bf13-52b866e14717" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_dc6a9a19-7ce2-4d35-91ad-12c843c231c5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_4dbce7cb-f81c-4f4d-84bc-eee22ccfce98" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_dc6a9a19-7ce2-4d35-91ad-12c843c231c5" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_4dbce7cb-f81c-4f4d-84bc-eee22ccfce98" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization_5406e84a-4169-4171-8b3f-eab32e3afee6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_dc6a9a19-7ce2-4d35-91ad-12c843c231c5" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization_5406e84a-4169-4171-8b3f-eab32e3afee6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_b7fc460b-c5ef-45e5-ba1e-f76789d4aeb9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_dc6a9a19-7ce2-4d35-91ad-12c843c231c5" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_b7fc460b-c5ef-45e5-ba1e-f76789d4aeb9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortizationAbstract_b7ec82b6-8f26-456a-ac5b-047bf9f96557" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortizationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_4ae0d033-c7b1-42df-bf13-52b866e14717" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortizationAbstract_b7ec82b6-8f26-456a-ac5b-047bf9f96557" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization_9bc1befa-5600-4d03-82eb-f7ba47a73089" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortizationAbstract_b7ec82b6-8f26-456a-ac5b-047bf9f96557" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization_9bc1befa-5600-4d03-82eb-f7ba47a73089" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_05bbb54d-4f2e-4715-abd0-a154654c19e5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_4ae0d033-c7b1-42df-bf13-52b866e14717" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_05bbb54d-4f2e-4715-abd0-a154654c19e5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_5d046171-1f19-4ac0-a5e9-ec167cfd8f7b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_4ae0d033-c7b1-42df-bf13-52b866e14717" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_5d046171-1f19-4ac0-a5e9-ec167cfd8f7b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_86855e8c-0e37-47ba-a356-0a8967f2ce7b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_5d046171-1f19-4ac0-a5e9-ec167cfd8f7b" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_86855e8c-0e37-47ba-a356-0a8967f2ce7b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_86855e8c-0e37-47ba-a356-0a8967f2ce7b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_86855e8c-0e37-47ba-a356-0a8967f2ce7b" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_86855e8c-0e37-47ba-a356-0a8967f2ce7b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4dd061f1-cac2-4f93-b11f-34b2579da002" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_86855e8c-0e37-47ba-a356-0a8967f2ce7b" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4dd061f1-cac2-4f93-b11f-34b2579da002" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_SatellitesOwnedMember_9569ad7d-6c33-40fb-a484-3760e704a62f" xlink:href="sats-20220630.xsd#sats_SatellitesOwnedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4dd061f1-cac2-4f93-b11f-34b2579da002" xlink:to="loc_sats_SatellitesOwnedMember_9569ad7d-6c33-40fb-a484-3760e704a62f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_AssetHeldUnderFinanceLeaseMember_10e1217e-2e0e-4b3e-9e3d-5bc77162c214" xlink:href="sats-20220630.xsd#sats_AssetHeldUnderFinanceLeaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4dd061f1-cac2-4f93-b11f-34b2579da002" xlink:to="loc_sats_AssetHeldUnderFinanceLeaseMember_10e1217e-2e0e-4b3e-9e3d-5bc77162c214" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_ConstructioninProgressSatellitesMember_f8e57c7d-f767-469d-9dca-c573dfe5d639" xlink:href="sats-20220630.xsd#sats_ConstructioninProgressSatellitesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4dd061f1-cac2-4f93-b11f-34b2579da002" xlink:to="loc_sats_ConstructioninProgressSatellitesMember_f8e57c7d-f767-469d-9dca-c573dfe5d639" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_SatellitesMember_0e12ed37-71bf-4df7-9602-17845fdb59e2" xlink:href="sats-20220630.xsd#sats_SatellitesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4dd061f1-cac2-4f93-b11f-34b2579da002" xlink:to="loc_sats_SatellitesMember_0e12ed37-71bf-4df7-9602-17845fdb59e2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_8f18330a-400b-4b60-a7d0-9382be824436" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_5d046171-1f19-4ac0-a5e9-ec167cfd8f7b" xlink:to="loc_srt_RangeAxis_8f18330a-400b-4b60-a7d0-9382be824436" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_8f18330a-400b-4b60-a7d0-9382be824436_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_8f18330a-400b-4b60-a7d0-9382be824436" xlink:to="loc_srt_RangeMember_8f18330a-400b-4b60-a7d0-9382be824436_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_ccea159f-aeb7-4312-afe8-16893af23cc8" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_8f18330a-400b-4b60-a7d0-9382be824436" xlink:to="loc_srt_RangeMember_ccea159f-aeb7-4312-afe8-16893af23cc8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_6a86cc63-063e-4e1b-a0df-8fa7a0ef8910" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_ccea159f-aeb7-4312-afe8-16893af23cc8" xlink:to="loc_srt_MinimumMember_6a86cc63-063e-4e1b-a0df-8fa7a0ef8910" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_29401c72-f903-482f-9483-418872611591" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_ccea159f-aeb7-4312-afe8-16893af23cc8" xlink:to="loc_srt_MaximumMember_29401c72-f903-482f-9483-418872611591" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/PropertyandEquipmentScheduleofDepreciationandCapitalizedInterestDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#PropertyandEquipmentScheduleofDepreciationandCapitalizedInterestDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/PropertyandEquipmentScheduleofDepreciationandCapitalizedInterestDetails" xlink:type="extended" id="i797cd774efc345edb756d507aa146326_PropertyandEquipmentScheduleofDepreciationandCapitalizedInterestDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_4685f9be-4681-4e1b-ae87-5c26fac59c48" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAbstract_86153f24-ad5d-414b-841f-c02131eeb119" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DepreciationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_4685f9be-4681-4e1b-ae87-5c26fac59c48" xlink:to="loc_us-gaap_DepreciationAbstract_86153f24-ad5d-414b-841f-c02131eeb119" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_2c77aeb0-f956-4897-a01f-ff4359d3e430" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Depreciation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DepreciationAbstract_86153f24-ad5d-414b-841f-c02131eeb119" xlink:to="loc_us-gaap_Depreciation_2c77aeb0-f956-4897-a01f-ff4359d3e430" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAssetAmortization_3c732b94-85ba-4256-8ac2-bd95f01af422" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseRightOfUseAssetAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DepreciationAbstract_86153f24-ad5d-414b-841f-c02131eeb119" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAssetAmortization_3c732b94-85ba-4256-8ac2-bd95f01af422" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_5ab2d3b7-3a13-43dc-b694-85c6915b92df" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DepreciationAbstract_86153f24-ad5d-414b-841f-c02131eeb119" xlink:to="loc_us-gaap_DepreciationAndAmortization_5ab2d3b7-3a13-43dc-b694-85c6915b92df" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestCostsCapitalized_c70a9cc8-84eb-43db-9972-719cb2279188" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestCostsCapitalized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_4685f9be-4681-4e1b-ae87-5c26fac59c48" xlink:to="loc_us-gaap_InterestCostsCapitalized_c70a9cc8-84eb-43db-9972-719cb2279188" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_1881bbfe-8090-456d-99f5-a16621bc5a93" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_4685f9be-4681-4e1b-ae87-5c26fac59c48" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_1881bbfe-8090-456d-99f5-a16621bc5a93" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_942eb9b9-4baa-4168-b64d-c1286fffdc27" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_1881bbfe-8090-456d-99f5-a16621bc5a93" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_942eb9b9-4baa-4168-b64d-c1286fffdc27" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_942eb9b9-4baa-4168-b64d-c1286fffdc27_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_942eb9b9-4baa-4168-b64d-c1286fffdc27" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_942eb9b9-4baa-4168-b64d-c1286fffdc27_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_f65fad19-d4ca-4d15-9a32-a961bfd20a77" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_942eb9b9-4baa-4168-b64d-c1286fffdc27" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_f65fad19-d4ca-4d15-9a32-a961bfd20a77" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_SatellitesMember_1d499edf-b8a6-4db2-b472-97439c963ba6" xlink:href="sats-20220630.xsd#sats_SatellitesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_f65fad19-d4ca-4d15-9a32-a961bfd20a77" xlink:to="loc_sats_SatellitesMember_1d499edf-b8a6-4db2-b472-97439c963ba6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_SatellitesOwnedMember_c5d1b13b-155d-4bd3-982a-e1a0052bdd89" xlink:href="sats-20220630.xsd#sats_SatellitesOwnedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sats_SatellitesMember_1d499edf-b8a6-4db2-b472-97439c963ba6" xlink:to="loc_sats_SatellitesOwnedMember_c5d1b13b-155d-4bd3-982a-e1a0052bdd89" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_SatellitesAcquiredUnderFinanceLeaseMember_c2767462-b671-475f-9896-537551e5d803" xlink:href="sats-20220630.xsd#sats_SatellitesAcquiredUnderFinanceLeaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sats_SatellitesMember_1d499edf-b8a6-4db2-b472-97439c963ba6" xlink:to="loc_sats_SatellitesAcquiredUnderFinanceLeaseMember_c2767462-b671-475f-9896-537551e5d803" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/RegulatoryAuthorizationsScheduleofRegulatoryAuthorizationsDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#RegulatoryAuthorizationsScheduleofRegulatoryAuthorizationsDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/RegulatoryAuthorizationsScheduleofRegulatoryAuthorizationsDetails" xlink:type="extended" id="i360b67bd6dd248279e53a33e85903ce1_RegulatoryAuthorizationsScheduleofRegulatoryAuthorizationsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_a639a24c-df48-4583-ab22-415a59b936ec" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_FiniteLivedIntangibleAssetsGrossRollForward_2266b03d-ff73-4f03-9dfa-498c9b9aec90" xlink:href="sats-20220630.xsd#sats_FiniteLivedIntangibleAssetsGrossRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_a639a24c-df48-4583-ab22-415a59b936ec" xlink:to="loc_sats_FiniteLivedIntangibleAssetsGrossRollForward_2266b03d-ff73-4f03-9dfa-498c9b9aec90" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_29c3e433-8447-4e54-8e32-06c27612d125" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sats_FiniteLivedIntangibleAssetsGrossRollForward_2266b03d-ff73-4f03-9dfa-498c9b9aec90" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_29c3e433-8447-4e54-8e32-06c27612d125" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_FiniteLivedIntangibleAssetsGrossTranslationAdjustments_7e0af081-d1f3-4493-8d8d-b1a63c882a6a" xlink:href="sats-20220630.xsd#sats_FiniteLivedIntangibleAssetsGrossTranslationAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sats_FiniteLivedIntangibleAssetsGrossRollForward_2266b03d-ff73-4f03-9dfa-498c9b9aec90" xlink:to="loc_sats_FiniteLivedIntangibleAssetsGrossTranslationAdjustments_7e0af081-d1f3-4493-8d8d-b1a63c882a6a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_481cc365-74a3-4526-a234-b635c9d0d9ec" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_FiniteLivedIntangibleAssetsAccumulatedAmortizationRollForward_5d89a23d-b44e-40f6-a398-65cf7acac89b" xlink:href="sats-20220630.xsd#sats_FiniteLivedIntangibleAssetsAccumulatedAmortizationRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_a639a24c-df48-4583-ab22-415a59b936ec" xlink:to="loc_sats_FiniteLivedIntangibleAssetsAccumulatedAmortizationRollForward_5d89a23d-b44e-40f6-a398-65cf7acac89b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_dd760901-7ed6-4103-895e-7a5d1adcdfc3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sats_FiniteLivedIntangibleAssetsAccumulatedAmortizationRollForward_5d89a23d-b44e-40f6-a398-65cf7acac89b" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_dd760901-7ed6-4103-895e-7a5d1adcdfc3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentForAmortization_2b0ecd7b-f4af-4ef1-94d4-c0e0b4a10b94" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdjustmentForAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sats_FiniteLivedIntangibleAssetsAccumulatedAmortizationRollForward_5d89a23d-b44e-40f6-a398-65cf7acac89b" xlink:to="loc_us-gaap_AdjustmentForAmortization_2b0ecd7b-f4af-4ef1-94d4-c0e0b4a10b94" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_FiniteLivedIntangibleAssetsAmortizationTranslationAdjustments_66e58898-20fd-40bb-9219-3ad05b4e431b" xlink:href="sats-20220630.xsd#sats_FiniteLivedIntangibleAssetsAmortizationTranslationAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sats_FiniteLivedIntangibleAssetsAccumulatedAmortizationRollForward_5d89a23d-b44e-40f6-a398-65cf7acac89b" xlink:to="loc_sats_FiniteLivedIntangibleAssetsAmortizationTranslationAdjustments_66e58898-20fd-40bb-9219-3ad05b4e431b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_80b20b56-afc5-4101-a09d-6560bca3abbc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsRollForward_65992165-3d1e-4743-bf1a-53de844c0ec9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_a639a24c-df48-4583-ab22-415a59b936ec" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsRollForward_65992165-3d1e-4743-bf1a-53de844c0ec9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_41dc648a-509b-4218-a62d-a4e476072559" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsRollForward_65992165-3d1e-4743-bf1a-53de844c0ec9" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_41dc648a-509b-4218-a62d-a4e476072559" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_FiniteLivedIntangibleAssetsCurrencyTranslationAdjustmentNet_1b38882b-d842-454f-b557-747b84f94989" xlink:href="sats-20220630.xsd#sats_FiniteLivedIntangibleAssetsCurrencyTranslationAdjustmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsRollForward_65992165-3d1e-4743-bf1a-53de844c0ec9" xlink:to="loc_sats_FiniteLivedIntangibleAssetsCurrencyTranslationAdjustmentNet_1b38882b-d842-454f-b557-747b84f94989" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_7d4b605b-d441-413e-9df4-810dc7e26c5b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_169d08c5-69fd-442d-b349-5ab5c78a2d56" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IndefiniteLivedIntangibleAssetsRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_a639a24c-df48-4583-ab22-415a59b936ec" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_169d08c5-69fd-442d-b349-5ab5c78a2d56" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_1cd8cede-0f7e-4e33-83d2-7fc50952750e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_169d08c5-69fd-442d-b349-5ab5c78a2d56" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_1cd8cede-0f7e-4e33-83d2-7fc50952750e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsTranslationAndPurchaseAccountingAdjustments_19de1f7d-11dc-4b93-87c8-5516611dd20b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IndefiniteLivedIntangibleAssetsTranslationAndPurchaseAccountingAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_169d08c5-69fd-442d-b349-5ab5c78a2d56" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsTranslationAndPurchaseAccountingAdjustments_19de1f7d-11dc-4b93-87c8-5516611dd20b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_60019e8f-5c21-4a34-9c44-65566b5e23e9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_OtherIntangibleAssetsNetRollForward_4f9d01e9-d650-4a96-b380-9895aa88fb54" xlink:href="sats-20220630.xsd#sats_OtherIntangibleAssetsNetRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_a639a24c-df48-4583-ab22-415a59b936ec" xlink:to="loc_sats_OtherIntangibleAssetsNetRollForward_4f9d01e9-d650-4a96-b380-9895aa88fb54" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_IntangibleAssetsExcludingOtherIntangibleAssets_279e76eb-c4cf-4cc9-9fc7-997f9caf97bc" xlink:href="sats-20220630.xsd#sats_IntangibleAssetsExcludingOtherIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sats_OtherIntangibleAssetsNetRollForward_4f9d01e9-d650-4a96-b380-9895aa88fb54" xlink:to="loc_sats_IntangibleAssetsExcludingOtherIntangibleAssets_279e76eb-c4cf-4cc9-9fc7-997f9caf97bc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_OtherIntangibleAssetsNetTranslationAdjustments_a15a1b71-34cf-43d9-bf9e-36235e507c04" xlink:href="sats-20220630.xsd#sats_OtherIntangibleAssetsNetTranslationAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sats_OtherIntangibleAssetsNetRollForward_4f9d01e9-d650-4a96-b380-9895aa88fb54" xlink:to="loc_sats_OtherIntangibleAssetsNetTranslationAdjustments_a15a1b71-34cf-43d9-bf9e-36235e507c04" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_IntangibleAssetsExcludingOtherIntangibleAssets_931ff0e5-5eb6-4c2b-9c74-b6d62f26625c" xlink:href="sats-20220630.xsd#sats_IntangibleAssetsExcludingOtherIntangibleAssets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_6de4a735-228b-48a5-a744-2719d66047fa" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_a639a24c-df48-4583-ab22-415a59b936ec" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_6de4a735-228b-48a5-a744-2719d66047fa" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_2b13e804-b2b7-47ea-862e-4b4b54f60a42" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_a639a24c-df48-4583-ab22-415a59b936ec" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_2b13e804-b2b7-47ea-862e-4b4b54f60a42" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_b8d90cad-a00d-4680-9940-ccaddcfa3ee6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_2b13e804-b2b7-47ea-862e-4b4b54f60a42" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_b8d90cad-a00d-4680-9940-ccaddcfa3ee6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_b8d90cad-a00d-4680-9940-ccaddcfa3ee6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_b8d90cad-a00d-4680-9940-ccaddcfa3ee6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_b8d90cad-a00d-4680-9940-ccaddcfa3ee6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_2333a7b0-8177-4f25-8c85-40df80e3aed8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_b8d90cad-a00d-4680-9940-ccaddcfa3ee6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_2333a7b0-8177-4f25-8c85-40df80e3aed8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UseRightsMember_8a849b65-3541-46ca-a6c2-896ad1bf82db" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UseRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_2333a7b0-8177-4f25-8c85-40df80e3aed8" xlink:to="loc_us-gaap_UseRightsMember_8a849b65-3541-46ca-a6c2-896ad1bf82db" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/OtherInvestmentsNarrativeDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#OtherInvestmentsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/OtherInvestmentsNarrativeDetails" xlink:type="extended" id="i3c571e3180364e438650c859177f6cff_OtherInvestmentsNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_732dcce0-0711-4150-a10c-a9df712894e9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_0f42e11a-718b-4dce-a580-d1f545b6570d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_732dcce0-0711-4150-a10c-a9df712894e9" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_0f42e11a-718b-4dce-a580-d1f545b6570d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_397aa36d-4378-48e5-a6dc-1d9e273f4ba1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_732dcce0-0711-4150-a10c-a9df712894e9" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_397aa36d-4378-48e5-a6dc-1d9e273f4ba1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_6b0e5012-fe8b-41a1-b581-e229aa6ef89d" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_397aa36d-4378-48e5-a6dc-1d9e273f4ba1" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_6b0e5012-fe8b-41a1-b581-e229aa6ef89d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_6b0e5012-fe8b-41a1-b581-e229aa6ef89d_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_6b0e5012-fe8b-41a1-b581-e229aa6ef89d" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_6b0e5012-fe8b-41a1-b581-e229aa6ef89d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_74377dcc-c085-4b25-92f2-1150d91aa9f9" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_6b0e5012-fe8b-41a1-b581-e229aa6ef89d" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_74377dcc-c085-4b25-92f2-1150d91aa9f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_DishMexicoMember_6a501e53-ab1f-45a8-b3be-499e8468b149" xlink:href="sats-20220630.xsd#sats_DishMexicoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_74377dcc-c085-4b25-92f2-1150d91aa9f9" xlink:to="loc_sats_DishMexicoMember_6a501e53-ab1f-45a8-b3be-499e8468b149" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_DeluxeEchoStarLLCMember_6ace719c-2752-4921-8613-8b32ef4533c7" xlink:href="sats-20220630.xsd#sats_DeluxeEchoStarLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_74377dcc-c085-4b25-92f2-1150d91aa9f9" xlink:to="loc_sats_DeluxeEchoStarLLCMember_6ace719c-2752-4921-8613-8b32ef4533c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_BroadbandConnectivitySolutionsMember_e2e102ae-cb87-4195-9750-a6ae61b04bdf" xlink:href="sats-20220630.xsd#sats_BroadbandConnectivitySolutionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_74377dcc-c085-4b25-92f2-1150d91aa9f9" xlink:to="loc_sats_BroadbandConnectivitySolutionsMember_e2e102ae-cb87-4195-9750-a6ae61b04bdf" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/OtherInvestmentsScheduleofRevenueRecognizedDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#OtherInvestmentsScheduleofRevenueRecognizedDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/OtherInvestmentsScheduleofRevenueRecognizedDetails" xlink:type="extended" id="i59d99dfae9404a8a958ff459330e9db9_OtherInvestmentsScheduleofRevenueRecognizedDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_fb3c4b1d-f6fb-465e-ab74-8a9b6a9855a3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromRelatedParties_b69e5eeb-8050-4c20-b575-b81211da1c58" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueFromRelatedParties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_fb3c4b1d-f6fb-465e-ab74-8a9b6a9855a3" xlink:to="loc_us-gaap_RevenueFromRelatedParties_b69e5eeb-8050-4c20-b575-b81211da1c58" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_ad41487c-01dd-493a-af6d-8160d5a18e6e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_fb3c4b1d-f6fb-465e-ab74-8a9b6a9855a3" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_ad41487c-01dd-493a-af6d-8160d5a18e6e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_1f8117c7-8f34-42d8-af56-c1386dcd89ba" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_ad41487c-01dd-493a-af6d-8160d5a18e6e" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_1f8117c7-8f34-42d8-af56-c1386dcd89ba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_1f8117c7-8f34-42d8-af56-c1386dcd89ba_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_1f8117c7-8f34-42d8-af56-c1386dcd89ba" xlink:to="loc_us-gaap_RelatedPartyDomain_1f8117c7-8f34-42d8-af56-c1386dcd89ba_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_6454d9bb-010c-4d81-8ef6-33182945b90d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_1f8117c7-8f34-42d8-af56-c1386dcd89ba" xlink:to="loc_us-gaap_RelatedPartyDomain_6454d9bb-010c-4d81-8ef6-33182945b90d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_DeluxeEchoStarLLCMember_a5bc37b3-c85b-4179-ac25-b54266095ef5" xlink:href="sats-20220630.xsd#sats_DeluxeEchoStarLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_6454d9bb-010c-4d81-8ef6-33182945b90d" xlink:to="loc_sats_DeluxeEchoStarLLCMember_a5bc37b3-c85b-4179-ac25-b54266095ef5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_BroadbandConnectivitySolutionsMember_c832d129-0ea3-430e-b1fb-230d581ec6ce" xlink:href="sats-20220630.xsd#sats_BroadbandConnectivitySolutionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_6454d9bb-010c-4d81-8ef6-33182945b90d" xlink:to="loc_sats_BroadbandConnectivitySolutionsMember_c832d129-0ea3-430e-b1fb-230d581ec6ce" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/OtherInvestmentsScheduleofTradeAccountsReceivableDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#OtherInvestmentsScheduleofTradeAccountsReceivableDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/OtherInvestmentsScheduleofTradeAccountsReceivableDetails" xlink:type="extended" id="i41efe76614ac45da8871089e92adcb51_OtherInvestmentsScheduleofTradeAccountsReceivableDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_03ac1801-b42f-4bdd-912c-5b12fbf32ce6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableRelatedParties_458ffade-ed7d-4c6f-b709-aaea0d7a91c5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsReceivableRelatedParties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_03ac1801-b42f-4bdd-912c-5b12fbf32ce6" xlink:to="loc_us-gaap_AccountsReceivableRelatedParties_458ffade-ed7d-4c6f-b709-aaea0d7a91c5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_e1b1e2c8-c356-4e65-9b22-11c8ed618ed2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_03ac1801-b42f-4bdd-912c-5b12fbf32ce6" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_e1b1e2c8-c356-4e65-9b22-11c8ed618ed2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_7e8f9d1b-e2c3-425d-92f6-c68ff8d0dd06" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_e1b1e2c8-c356-4e65-9b22-11c8ed618ed2" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_7e8f9d1b-e2c3-425d-92f6-c68ff8d0dd06" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_7e8f9d1b-e2c3-425d-92f6-c68ff8d0dd06_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_7e8f9d1b-e2c3-425d-92f6-c68ff8d0dd06" xlink:to="loc_us-gaap_RelatedPartyDomain_7e8f9d1b-e2c3-425d-92f6-c68ff8d0dd06_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_ced88e8e-1324-4ceb-abb2-6cb66f072483" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_7e8f9d1b-e2c3-425d-92f6-c68ff8d0dd06" xlink:to="loc_us-gaap_RelatedPartyDomain_ced88e8e-1324-4ceb-abb2-6cb66f072483" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_DeluxeEchoStarLLCMember_12e58711-6b10-4b36-bdfe-db39fa4cb4e7" xlink:href="sats-20220630.xsd#sats_DeluxeEchoStarLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_ced88e8e-1324-4ceb-abb2-6cb66f072483" xlink:to="loc_sats_DeluxeEchoStarLLCMember_12e58711-6b10-4b36-bdfe-db39fa4cb4e7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_BroadbandConnectivitySolutionsMember_582164a9-d3dd-449f-80f2-c68d2234997e" xlink:href="sats-20220630.xsd#sats_BroadbandConnectivitySolutionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_ced88e8e-1324-4ceb-abb2-6cb66f072483" xlink:to="loc_sats_BroadbandConnectivitySolutionsMember_582164a9-d3dd-449f-80f2-c68d2234997e" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/LongTermDebtScheduleofDebtDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#LongTermDebtScheduleofDebtDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/LongTermDebtScheduleofDebtDetails" xlink:type="extended" id="i88e222c3020a4c9a8d77411088346984_LongTermDebtScheduleofDebtDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_41e14013-e707-49d3-b109-159f1054e09a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_bb39f757-dea3-4ef4-9467-daa7081b8cc2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_41e14013-e707-49d3-b109-159f1054e09a" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_bb39f757-dea3-4ef4-9467-daa7081b8cc2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_92303ff7-9307-4824-8590-15833bc8ab4a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_41e14013-e707-49d3-b109-159f1054e09a" xlink:to="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_92303ff7-9307-4824-8590-15833bc8ab4a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_4808f09e-881c-4b23-be72-f0adff0b65e2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_41e14013-e707-49d3-b109-159f1054e09a" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_4808f09e-881c-4b23-be72-f0adff0b65e2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsNoncurrentNet_7ebf37d7-e716-47f9-acdf-605f9dec43fe" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredFinanceCostsNoncurrentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_41e14013-e707-49d3-b109-159f1054e09a" xlink:to="loc_us-gaap_DeferredFinanceCostsNoncurrentNet_7ebf37d7-e716-47f9-acdf-605f9dec43fe" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_5e0aa0fd-d9c1-4cc3-84b4-d5a996438934" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_41e14013-e707-49d3-b109-159f1054e09a" xlink:to="loc_us-gaap_LongTermDebt_5e0aa0fd-d9c1-4cc3-84b4-d5a996438934" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFairValue_e2c79fe3-790d-4427-b14a-8c22fc26c4be" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_41e14013-e707-49d3-b109-159f1054e09a" xlink:to="loc_us-gaap_DebtInstrumentFairValue_e2c79fe3-790d-4427-b14a-8c22fc26c4be" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_82b315de-c49d-4b6c-be8d-c58b6d1233f9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_41e14013-e707-49d3-b109-159f1054e09a" xlink:to="loc_us-gaap_DebtInstrumentTable_82b315de-c49d-4b6c-be8d-c58b6d1233f9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_e097f8f3-7a9b-4eba-98ef-053968116c0a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_82b315de-c49d-4b6c-be8d-c58b6d1233f9" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_e097f8f3-7a9b-4eba-98ef-053968116c0a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_e097f8f3-7a9b-4eba-98ef-053968116c0a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_e097f8f3-7a9b-4eba-98ef-053968116c0a" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_e097f8f3-7a9b-4eba-98ef-053968116c0a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_e446af9c-879b-45f0-bbbd-04506592be00" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_e097f8f3-7a9b-4eba-98ef-053968116c0a" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_e446af9c-879b-45f0-bbbd-04506592be00" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_fba686ac-e361-430d-b4cf-e0b19116e2d6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_e446af9c-879b-45f0-bbbd-04506592be00" xlink:to="loc_us-gaap_SecuredDebtMember_fba686ac-e361-430d-b4cf-e0b19116e2d6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_e5c14b59-ecae-4d3b-8ffb-2a993d7a7b0b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UnsecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_e446af9c-879b-45f0-bbbd-04506592be00" xlink:to="loc_us-gaap_UnsecuredDebtMember_e5c14b59-ecae-4d3b-8ffb-2a993d7a7b0b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_7fec65bc-19db-4f92-8008-f53c00ae57b2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_82b315de-c49d-4b6c-be8d-c58b6d1233f9" xlink:to="loc_us-gaap_DebtInstrumentAxis_7fec65bc-19db-4f92-8008-f53c00ae57b2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_7fec65bc-19db-4f92-8008-f53c00ae57b2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_7fec65bc-19db-4f92-8008-f53c00ae57b2" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_7fec65bc-19db-4f92-8008-f53c00ae57b2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_0adf5676-eb80-4539-a759-c6d7dc5c21db" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_7fec65bc-19db-4f92-8008-f53c00ae57b2" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_0adf5676-eb80-4539-a759-c6d7dc5c21db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_SeniorSecuredNotes5.250PercentDue2026Member_e16de77b-4382-4434-b6f6-ba6605f0cca1" xlink:href="sats-20220630.xsd#sats_SeniorSecuredNotes5.250PercentDue2026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_0adf5676-eb80-4539-a759-c6d7dc5c21db" xlink:to="loc_sats_SeniorSecuredNotes5.250PercentDue2026Member_e16de77b-4382-4434-b6f6-ba6605f0cca1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_SeniorUnsecuredNotes6.625PercentDue2026Member_7cfa99e1-20e9-4030-baa9-b962b71c80be" xlink:href="sats-20220630.xsd#sats_SeniorUnsecuredNotes6.625PercentDue2026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_0adf5676-eb80-4539-a759-c6d7dc5c21db" xlink:to="loc_sats_SeniorUnsecuredNotes6.625PercentDue2026Member_7cfa99e1-20e9-4030-baa9-b962b71c80be" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/RelatedPartyTransactionsDISHNetworkOverviewDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#RelatedPartyTransactionsDISHNetworkOverviewDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/RelatedPartyTransactionsDISHNetworkOverviewDetails" xlink:type="extended" id="i06b6d1cb34504ab38ec4a73456246867_RelatedPartyTransactionsDISHNetworkOverviewDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_3bba26b5-0c11-43df-ba37-14d91ec9b730" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsPercentageOfEconomicInterestHeld_6d23865b-294f-4461-803a-8f248c8f0431" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsPercentageOfEconomicInterestHeld"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_3bba26b5-0c11-43df-ba37-14d91ec9b730" xlink:to="loc_sats_RelatedPartyTransactionsPercentageOfEconomicInterestHeld_6d23865b-294f-4461-803a-8f248c8f0431" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_BusinessCombinationOwnershipPercentageAcquiredByRelatedParty_c0ec85dc-ad93-4ba3-a681-37d0e9a1337c" xlink:href="sats-20220630.xsd#sats_BusinessCombinationOwnershipPercentageAcquiredByRelatedParty"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_3bba26b5-0c11-43df-ba37-14d91ec9b730" xlink:to="loc_sats_BusinessCombinationOwnershipPercentageAcquiredByRelatedParty_c0ec85dc-ad93-4ba3-a681-37d0e9a1337c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_726040f9-a1f9-49b6-9a11-a5d1d6d3a62a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_3bba26b5-0c11-43df-ba37-14d91ec9b730" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_726040f9-a1f9-49b6-9a11-a5d1d6d3a62a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableEntitySharesIssuedForEachShareOfCommonStock_ae06e470-4756-456c-a376-197da227f3ba" xlink:href="sats-20220630.xsd#sats_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableEntitySharesIssuedForEachShareOfCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_3bba26b5-0c11-43df-ba37-14d91ec9b730" xlink:to="loc_sats_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableEntitySharesIssuedForEachShareOfCommonStock_ae06e470-4756-456c-a376-197da227f3ba" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableEntitySharesIssuedPerAcquireeShare_29247ffd-ee05-4066-8695-829f82599bb3" xlink:href="sats-20220630.xsd#sats_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableEntitySharesIssuedPerAcquireeShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_3bba26b5-0c11-43df-ba37-14d91ec9b730" xlink:to="loc_sats_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableEntitySharesIssuedPerAcquireeShare_29247ffd-ee05-4066-8695-829f82599bb3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsNumberOfDBSTranspondersAvailable_fdc132cd-d023-470d-a569-77629879afc7" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsNumberOfDBSTranspondersAvailable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_3bba26b5-0c11-43df-ba37-14d91ec9b730" xlink:to="loc_sats_RelatedPartyTransactionsNumberOfDBSTranspondersAvailable_fdc132cd-d023-470d-a569-77629879afc7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_3d89b50c-d793-4243-9f13-f51d9a4e2fd8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_3bba26b5-0c11-43df-ba37-14d91ec9b730" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_3d89b50c-d793-4243-9f13-f51d9a4e2fd8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_c87d3fc0-91b0-495c-9861-9cafd08be340" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_3d89b50c-d793-4243-9f13-f51d9a4e2fd8" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_c87d3fc0-91b0-495c-9861-9cafd08be340" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_c87d3fc0-91b0-495c-9861-9cafd08be340_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_c87d3fc0-91b0-495c-9861-9cafd08be340" xlink:to="loc_us-gaap_RelatedPartyDomain_c87d3fc0-91b0-495c-9861-9cafd08be340_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_4717d54c-cc28-49b0-84bd-6eb4546206d3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_c87d3fc0-91b0-495c-9861-9cafd08be340" xlink:to="loc_us-gaap_RelatedPartyDomain_4717d54c-cc28-49b0-84bd-6eb4546206d3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_DISHNetworkMember_afd81f64-b69b-4afa-a32f-4ce3cd83df1e" xlink:href="sats-20220630.xsd#sats_DISHNetworkMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_4717d54c-cc28-49b0-84bd-6eb4546206d3" xlink:to="loc_sats_DISHNetworkMember_afd81f64-b69b-4afa-a32f-4ce3cd83df1e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_4dbbce03-f2e6-4253-b0d9-715530939715" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_3d89b50c-d793-4243-9f13-f51d9a4e2fd8" xlink:to="loc_us-gaap_StatementClassOfStockAxis_4dbbce03-f2e6-4253-b0d9-715530939715" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_4dbbce03-f2e6-4253-b0d9-715530939715_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_4dbbce03-f2e6-4253-b0d9-715530939715" xlink:to="loc_us-gaap_ClassOfStockDomain_4dbbce03-f2e6-4253-b0d9-715530939715_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_3f8f88df-fe3c-460b-b758-69425fa3c67e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_4dbbce03-f2e6-4253-b0d9-715530939715" xlink:to="loc_us-gaap_ClassOfStockDomain_3f8f88df-fe3c-460b-b758-69425fa3c67e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_PreferredTrackingStockMember_1890ebde-b53e-4e12-8a02-06a6e204eec4" xlink:href="sats-20220630.xsd#sats_PreferredTrackingStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_3f8f88df-fe3c-460b-b758-69425fa3c67e" xlink:to="loc_sats_PreferredTrackingStockMember_1890ebde-b53e-4e12-8a02-06a6e204eec4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_9a3d10bd-b3d0-47fb-9f8f-8054b39c0d94" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_3f8f88df-fe3c-460b-b758-69425fa3c67e" xlink:to="loc_us-gaap_CommonStockMember_9a3d10bd-b3d0-47fb-9f8f-8054b39c0d94" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_eec44d0d-c576-47ad-9b20-54c01e6cf1f5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_3f8f88df-fe3c-460b-b758-69425fa3c67e" xlink:to="loc_us-gaap_CommonClassAMember_eec44d0d-c576-47ad-9b20-54c01e6cf1f5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsegmentsAxis_093d33f2-caf9-43c4-ab64-2907156ad56e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_3d89b50c-d793-4243-9f13-f51d9a4e2fd8" xlink:to="loc_us-gaap_SubsegmentsAxis_093d33f2-caf9-43c4-ab64-2907156ad56e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsegmentsDomain_093d33f2-caf9-43c4-ab64-2907156ad56e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsegmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsegmentsAxis_093d33f2-caf9-43c4-ab64-2907156ad56e" xlink:to="loc_us-gaap_SubsegmentsDomain_093d33f2-caf9-43c4-ab64-2907156ad56e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsegmentsDomain_44fef61c-8d31-4c77-800a-f58ceb20ced1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsegmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsegmentsAxis_093d33f2-caf9-43c4-ab64-2907156ad56e" xlink:to="loc_us-gaap_SubsegmentsDomain_44fef61c-8d31-4c77-800a-f58ceb20ced1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_HughesRetailGroupMember_8d69e559-b231-4996-a6e4-d0939e8f4f66" xlink:href="sats-20220630.xsd#sats_HughesRetailGroupMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_44fef61c-8d31-4c77-800a-f58ceb20ced1" xlink:to="loc_sats_HughesRetailGroupMember_8d69e559-b231-4996-a6e4-d0939e8f4f66" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfArrangementAxis_d54d3843-f7fc-4e2f-a83d-30a7286f4d21" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TypeOfArrangementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_3d89b50c-d793-4243-9f13-f51d9a4e2fd8" xlink:to="loc_us-gaap_TypeOfArrangementAxis_d54d3843-f7fc-4e2f-a83d-30a7286f4d21" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_d54d3843-f7fc-4e2f-a83d-30a7286f4d21_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TypeOfArrangementAxis_d54d3843-f7fc-4e2f-a83d-30a7286f4d21" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_d54d3843-f7fc-4e2f-a83d-30a7286f4d21_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_8865234f-2749-410e-a3e9-c350fb25e6cd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TypeOfArrangementAxis_d54d3843-f7fc-4e2f-a83d-30a7286f4d21" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_8865234f-2749-410e-a3e9-c350fb25e6cd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_SatelliteAndTrackingStockTransactionMember_c9eb2c0c-079e-4fd9-8892-58088c256871" xlink:href="sats-20220630.xsd#sats_SatelliteAndTrackingStockTransactionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_8865234f-2749-410e-a3e9-c350fb25e6cd" xlink:to="loc_sats_SatelliteAndTrackingStockTransactionMember_c9eb2c0c-079e-4fd9-8892-58088c256871" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_ShareExchangeAgreementMember_107e08a9-4a77-4835-9983-3f083b8cbc16" xlink:href="sats-20220630.xsd#sats_ShareExchangeAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_8865234f-2749-410e-a3e9-c350fb25e6cd" xlink:to="loc_sats_ShareExchangeAgreementMember_107e08a9-4a77-4835-9983-3f083b8cbc16" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_DISHNimiq5AgreementMember_de5760fe-ce3d-4e5f-8243-065ebab59fd1" xlink:href="sats-20220630.xsd#sats_DISHNimiq5AgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_8865234f-2749-410e-a3e9-c350fb25e6cd" xlink:to="loc_sats_DISHNimiq5AgreementMember_de5760fe-ce3d-4e5f-8243-065ebab59fd1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_TeleSatTransponderAgreementMember_03a0e5b3-875c-45e3-9231-d373440737b6" xlink:href="sats-20220630.xsd#sats_TeleSatTransponderAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_8865234f-2749-410e-a3e9-c350fb25e6cd" xlink:to="loc_sats_TeleSatTransponderAgreementMember_03a0e5b3-875c-45e3-9231-d373440737b6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_dc655470-89df-4fc9-b7e0-e5e3ab33ef4a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_3d89b50c-d793-4243-9f13-f51d9a4e2fd8" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_dc655470-89df-4fc9-b7e0-e5e3ab33ef4a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_dc655470-89df-4fc9-b7e0-e5e3ab33ef4a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_dc655470-89df-4fc9-b7e0-e5e3ab33ef4a" xlink:to="loc_us-gaap_SegmentDomain_dc655470-89df-4fc9-b7e0-e5e3ab33ef4a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_4f898835-8c1c-4a90-ab2b-13de8f3799bd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_dc655470-89df-4fc9-b7e0-e5e3ab33ef4a" xlink:to="loc_us-gaap_SegmentDomain_4f898835-8c1c-4a90-ab2b-13de8f3799bd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_EchoStarTechnologiesBusinessMember_2e3464c6-0820-4177-b1f3-dd245c28c5c8" xlink:href="sats-20220630.xsd#sats_EchoStarTechnologiesBusinessMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_4f898835-8c1c-4a90-ab2b-13de8f3799bd" xlink:to="loc_sats_EchoStarTechnologiesBusinessMember_2e3464c6-0820-4177-b1f3-dd245c28c5c8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_0406c52b-dbf0-4d18-aa67-5fa27c2dd857" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_3d89b50c-d793-4243-9f13-f51d9a4e2fd8" xlink:to="loc_dei_LegalEntityAxis_0406c52b-dbf0-4d18-aa67-5fa27c2dd857" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_0406c52b-dbf0-4d18-aa67-5fa27c2dd857_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_0406c52b-dbf0-4d18-aa67-5fa27c2dd857" xlink:to="loc_dei_EntityDomain_0406c52b-dbf0-4d18-aa67-5fa27c2dd857_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_48e6e908-3407-4d0f-a6a4-5f8090e9d587" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_0406c52b-dbf0-4d18-aa67-5fa27c2dd857" xlink:to="loc_dei_EntityDomain_48e6e908-3407-4d0f-a6a4-5f8090e9d587" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_BSSCorp.Member_383c0e56-a2db-42ac-801c-3e5e856020cc" xlink:href="sats-20220630.xsd#sats_BSSCorp.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_48e6e908-3407-4d0f-a6a4-5f8090e9d587" xlink:to="loc_sats_BSSCorp.Member_383c0e56-a2db-42ac-801c-3e5e856020cc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_DISHNetworkMember_98a9d3a5-0326-47ec-b017-09b2866d479d" xlink:href="sats-20220630.xsd#sats_DISHNetworkMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_48e6e908-3407-4d0f-a6a4-5f8090e9d587" xlink:to="loc_sats_DISHNetworkMember_98a9d3a5-0326-47ec-b017-09b2866d479d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_TelesatCanadaMember_4a22475f-d06a-44c6-a4ef-a488fa134c57" xlink:href="sats-20220630.xsd#sats_TelesatCanadaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_48e6e908-3407-4d0f-a6a4-5f8090e9d587" xlink:to="loc_sats_TelesatCanadaMember_4a22475f-d06a-44c6-a4ef-a488fa134c57" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkDISHNetworkServicesandOtherRevenueDISHNetworkDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#RelatedPartyTransactionsDishNetworkDISHNetworkServicesandOtherRevenueDISHNetworkDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkDISHNetworkServicesandOtherRevenueDISHNetworkDetails" xlink:type="extended" id="i2dc1d7171b224715aa9ae6be7152745e_RelatedPartyTransactionsDishNetworkDISHNetworkServicesandOtherRevenueDISHNetworkDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_f2670f0e-3d55-4e71-808f-10f626f57924" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromRelatedParties_d5d0e5c1-6493-4843-af12-1a24e4d6322d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueFromRelatedParties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_f2670f0e-3d55-4e71-808f-10f626f57924" xlink:to="loc_us-gaap_RevenueFromRelatedParties_d5d0e5c1-6493-4843-af12-1a24e4d6322d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableRelatedParties_ce99aba1-0c19-46e0-8989-1941fc17fd3d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsReceivableRelatedParties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_f2670f0e-3d55-4e71-808f-10f626f57924" xlink:to="loc_us-gaap_AccountsReceivableRelatedParties_ce99aba1-0c19-46e0-8989-1941fc17fd3d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_edd260ab-4fe0-4cba-b39a-502fd415439c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_f2670f0e-3d55-4e71-808f-10f626f57924" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_edd260ab-4fe0-4cba-b39a-502fd415439c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_96580b0f-4418-454b-802e-6b46399cf1e7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_edd260ab-4fe0-4cba-b39a-502fd415439c" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_96580b0f-4418-454b-802e-6b46399cf1e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_96580b0f-4418-454b-802e-6b46399cf1e7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_96580b0f-4418-454b-802e-6b46399cf1e7" xlink:to="loc_us-gaap_RelatedPartyDomain_96580b0f-4418-454b-802e-6b46399cf1e7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_8222ef9b-91e7-45bc-9d0e-5cbe343f2ebb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_96580b0f-4418-454b-802e-6b46399cf1e7" xlink:to="loc_us-gaap_RelatedPartyDomain_8222ef9b-91e7-45bc-9d0e-5cbe343f2ebb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_DISHNetworkMember_3d7e0435-5f33-4116-89ae-20fcc9b30d49" xlink:href="sats-20220630.xsd#sats_DISHNetworkMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_8222ef9b-91e7-45bc-9d0e-5cbe343f2ebb" xlink:to="loc_sats_DISHNetworkMember_3d7e0435-5f33-4116-89ae-20fcc9b30d49" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkRealEstateLeasestoDISHNetworkDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#RelatedPartyTransactionsDishNetworkRealEstateLeasestoDISHNetworkDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkRealEstateLeasestoDISHNetworkDetails" xlink:type="extended" id="ibe9e3c6b20f648bb811e061c81eca60c_RelatedPartyTransactionsDishNetworkRealEstateLeasestoDISHNetworkDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_372200d9-690d-4fb1-989e-4b5bc45427bf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement_45ebfba5-8b02-4356-b986-ddcce1f037e2" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_372200d9-690d-4fb1-989e-4b5bc45427bf" xlink:to="loc_sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement_45ebfba5-8b02-4356-b986-ddcce1f037e2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodforTerminationofAgreementAfterLeaseExtension_cd1fad26-1c9c-4dd5-9a34-760e738a9aa1" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodforTerminationofAgreementAfterLeaseExtension"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_372200d9-690d-4fb1-989e-4b5bc45427bf" xlink:to="loc_sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodforTerminationofAgreementAfterLeaseExtension_cd1fad26-1c9c-4dd5-9a34-760e738a9aa1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_f425b919-f03c-485c-a089-3f051bd145a8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_372200d9-690d-4fb1-989e-4b5bc45427bf" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_f425b919-f03c-485c-a089-3f051bd145a8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionAxis_de6f0944-88e9-48da-abc2-aa478d05d997" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_f425b919-f03c-485c-a089-3f051bd145a8" xlink:to="loc_us-gaap_RelatedPartyTransactionAxis_de6f0944-88e9-48da-abc2-aa478d05d997" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_de6f0944-88e9-48da-abc2-aa478d05d997_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_de6f0944-88e9-48da-abc2-aa478d05d997" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_de6f0944-88e9-48da-abc2-aa478d05d997_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_096ed179-2c1d-45d7-aa21-46d6053b37a4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_de6f0944-88e9-48da-abc2-aa478d05d997" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_096ed179-2c1d-45d7-aa21-46d6053b37a4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsLessorOperatingLeaseRealEstateMember_1e375fb6-b99a-468c-82ed-2e05c6db45a8" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsLessorOperatingLeaseRealEstateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_096ed179-2c1d-45d7-aa21-46d6053b37a4" xlink:to="loc_sats_RelatedPartyTransactionsLessorOperatingLeaseRealEstateMember_1e375fb6-b99a-468c-82ed-2e05c6db45a8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_bfb6e550-b3e4-46ff-9da1-62dbfd562ec4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_f425b919-f03c-485c-a089-3f051bd145a8" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_bfb6e550-b3e4-46ff-9da1-62dbfd562ec4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_bfb6e550-b3e4-46ff-9da1-62dbfd562ec4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_bfb6e550-b3e4-46ff-9da1-62dbfd562ec4" xlink:to="loc_us-gaap_RelatedPartyDomain_bfb6e550-b3e4-46ff-9da1-62dbfd562ec4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_11aa1d52-93f0-4ab6-aa93-f07ac21f54b0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_bfb6e550-b3e4-46ff-9da1-62dbfd562ec4" xlink:to="loc_us-gaap_RelatedPartyDomain_11aa1d52-93f0-4ab6-aa93-f07ac21f54b0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_DISHNetworkMember_fbeaeef1-fcac-48e0-b940-50e8a0284658" xlink:href="sats-20220630.xsd#sats_DISHNetworkMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_11aa1d52-93f0-4ab6-aa93-f07ac21f54b0" xlink:to="loc_sats_DISHNetworkMember_fbeaeef1-fcac-48e0-b940-50e8a0284658" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfArrangementAxis_b820ca31-5f47-47cc-8d25-f82ccb37f7f5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TypeOfArrangementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_f425b919-f03c-485c-a089-3f051bd145a8" xlink:to="loc_us-gaap_TypeOfArrangementAxis_b820ca31-5f47-47cc-8d25-f82ccb37f7f5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_b820ca31-5f47-47cc-8d25-f82ccb37f7f5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TypeOfArrangementAxis_b820ca31-5f47-47cc-8d25-f82ccb37f7f5" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_b820ca31-5f47-47cc-8d25-f82ccb37f7f5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_2f33cc36-806c-450d-90a1-86d691bb4d57" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TypeOfArrangementAxis_b820ca31-5f47-47cc-8d25-f82ccb37f7f5" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_2f33cc36-806c-450d-90a1-86d691bb4d57" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_A100InvernessLeaseAgreementMember_a4e2d144-5a34-4365-a6e5-ff00e277148d" xlink:href="sats-20220630.xsd#sats_A100InvernessLeaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_2f33cc36-806c-450d-90a1-86d691bb4d57" xlink:to="loc_sats_A100InvernessLeaseAgreementMember_a4e2d144-5a34-4365-a6e5-ff00e277148d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_MeridianLeaseAgreementMember_3a6c8efe-8b2d-44d0-9430-dbbaf03304b8" xlink:href="sats-20220630.xsd#sats_MeridianLeaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_2f33cc36-806c-450d-90a1-86d691bb4d57" xlink:to="loc_sats_MeridianLeaseAgreementMember_3a6c8efe-8b2d-44d0-9430-dbbaf03304b8" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkTerreStarAgreementDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#RelatedPartyTransactionsDishNetworkTerreStarAgreementDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkTerreStarAgreementDetails" xlink:type="extended" id="if54b204540c241bcb4ad02f964b40d10_RelatedPartyTransactionsDishNetworkTerreStarAgreementDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_6ed86d79-e0ed-42b0-a38c-8f04da85b6af" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsAgreementTerminationRequiredNoticePeriodFromRelatedPartyMinimum_8fe2ed30-8b89-4644-bb1d-280e34d11606" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsAgreementTerminationRequiredNoticePeriodFromRelatedPartyMinimum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_6ed86d79-e0ed-42b0-a38c-8f04da85b6af" xlink:to="loc_sats_RelatedPartyTransactionsAgreementTerminationRequiredNoticePeriodFromRelatedPartyMinimum_8fe2ed30-8b89-4644-bb1d-280e34d11606" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement_4212448f-0624-4fd3-80e6-a6b16266b49e" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_6ed86d79-e0ed-42b0-a38c-8f04da85b6af" xlink:to="loc_sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement_4212448f-0624-4fd3-80e6-a6b16266b49e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_c2785b62-6682-451b-ad9f-7dfce2d8861f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_6ed86d79-e0ed-42b0-a38c-8f04da85b6af" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_c2785b62-6682-451b-ad9f-7dfce2d8861f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_814338af-0a33-46ba-8918-20efe6e88b55" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_c2785b62-6682-451b-ad9f-7dfce2d8861f" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_814338af-0a33-46ba-8918-20efe6e88b55" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_814338af-0a33-46ba-8918-20efe6e88b55_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_814338af-0a33-46ba-8918-20efe6e88b55" xlink:to="loc_us-gaap_RelatedPartyDomain_814338af-0a33-46ba-8918-20efe6e88b55_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_979b0ff7-6dde-4f09-af48-f3000162fd3a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_814338af-0a33-46ba-8918-20efe6e88b55" xlink:to="loc_us-gaap_RelatedPartyDomain_979b0ff7-6dde-4f09-af48-f3000162fd3a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_DISHNetworkMember_5a7d11ef-f98c-41f2-954e-333f9647206b" xlink:href="sats-20220630.xsd#sats_DISHNetworkMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_979b0ff7-6dde-4f09-af48-f3000162fd3a" xlink:to="loc_sats_DISHNetworkMember_5a7d11ef-f98c-41f2-954e-333f9647206b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfArrangementAxis_bf674472-e01b-42a9-95cd-9ce84dcf3b45" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TypeOfArrangementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_c2785b62-6682-451b-ad9f-7dfce2d8861f" xlink:to="loc_us-gaap_TypeOfArrangementAxis_bf674472-e01b-42a9-95cd-9ce84dcf3b45" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_bf674472-e01b-42a9-95cd-9ce84dcf3b45_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TypeOfArrangementAxis_bf674472-e01b-42a9-95cd-9ce84dcf3b45" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_bf674472-e01b-42a9-95cd-9ce84dcf3b45_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_a882f5f8-aebe-4dac-8095-0fe0670a53a5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TypeOfArrangementAxis_bf674472-e01b-42a9-95cd-9ce84dcf3b45" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_a882f5f8-aebe-4dac-8095-0fe0670a53a5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_TerreStarAgreementMember_402a72e8-8ab3-43e3-9338-c5226dc6c622" xlink:href="sats-20220630.xsd#sats_TerreStarAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_a882f5f8-aebe-4dac-8095-0fe0670a53a5" xlink:to="loc_sats_TerreStarAgreementMember_402a72e8-8ab3-43e3-9338-c5226dc6c622" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkHughesBroadbandDistributionAgreementDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#RelatedPartyTransactionsDishNetworkHughesBroadbandDistributionAgreementDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkHughesBroadbandDistributionAgreementDetails" xlink:type="extended" id="i358f55500d274b8eade16db08509d51c_RelatedPartyTransactionsDishNetworkHughesBroadbandDistributionAgreementDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_ad437fec-9dc4-44bc-a5af-dbde74441616" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsAgreementTerm_50490f23-e570-49e1-91cb-2f2f6c6ece7b" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsAgreementTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_ad437fec-9dc4-44bc-a5af-dbde74441616" xlink:to="loc_sats_RelatedPartyTransactionsAgreementTerm_50490f23-e570-49e1-91cb-2f2f6c6ece7b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsAgreementAutomaticRenewalPeriod_ace5b96d-938b-498e-b7cb-6c5f431bda02" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsAgreementAutomaticRenewalPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_ad437fec-9dc4-44bc-a5af-dbde74441616" xlink:to="loc_sats_RelatedPartyTransactionsAgreementAutomaticRenewalPeriod_ace5b96d-938b-498e-b7cb-6c5f431bda02" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement_cc659480-305e-4240-bf35-9b887b3d4480" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_ad437fec-9dc4-44bc-a5af-dbde74441616" xlink:to="loc_sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement_cc659480-305e-4240-bf35-9b887b3d4480" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_dc7a23aa-ed7e-4cde-bc49-ea762e85044d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_ad437fec-9dc4-44bc-a5af-dbde74441616" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_dc7a23aa-ed7e-4cde-bc49-ea762e85044d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfArrangementAxis_3dcdbaca-264a-44dc-8ab3-e1e06e74eb5c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TypeOfArrangementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_dc7a23aa-ed7e-4cde-bc49-ea762e85044d" xlink:to="loc_us-gaap_TypeOfArrangementAxis_3dcdbaca-264a-44dc-8ab3-e1e06e74eb5c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_3dcdbaca-264a-44dc-8ab3-e1e06e74eb5c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TypeOfArrangementAxis_3dcdbaca-264a-44dc-8ab3-e1e06e74eb5c" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_3dcdbaca-264a-44dc-8ab3-e1e06e74eb5c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_11f7ca27-91b7-4f06-9229-e501e034b0b3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TypeOfArrangementAxis_3dcdbaca-264a-44dc-8ab3-e1e06e74eb5c" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_11f7ca27-91b7-4f06-9229-e501e034b0b3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_HughesBroadbandDistributionAgreementMember_64b0d801-634a-4161-b152-4e50f134c6ab" xlink:href="sats-20220630.xsd#sats_HughesBroadbandDistributionAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_11f7ca27-91b7-4f06-9229-e501e034b0b3" xlink:to="loc_sats_HughesBroadbandDistributionAgreementMember_64b0d801-634a-4161-b152-4e50f134c6ab" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkDBSDNorthAmericaAgreementDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#RelatedPartyTransactionsDishNetworkDBSDNorthAmericaAgreementDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkDBSDNorthAmericaAgreementDetails" xlink:type="extended" id="ifd05f533d45c4a848bbec45668f81632_RelatedPartyTransactionsDishNetworkDBSDNorthAmericaAgreementDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_654cd2c4-6e77-4dff-bc17-513763c7c54e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement_74cb0d43-2ec6-4db2-8f44-d11734a0a9fe" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_654cd2c4-6e77-4dff-bc17-513763c7c54e" xlink:to="loc_sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement_74cb0d43-2ec6-4db2-8f44-d11734a0a9fe" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsAgreementTerminationRequiredNoticePeriodFromRelatedPartyMinimum_974a5279-a51f-4070-b921-3d2c5b86834b" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsAgreementTerminationRequiredNoticePeriodFromRelatedPartyMinimum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_654cd2c4-6e77-4dff-bc17-513763c7c54e" xlink:to="loc_sats_RelatedPartyTransactionsAgreementTerminationRequiredNoticePeriodFromRelatedPartyMinimum_974a5279-a51f-4070-b921-3d2c5b86834b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_484309cd-ccab-4361-b681-0f2e78581375" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_654cd2c4-6e77-4dff-bc17-513763c7c54e" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_484309cd-ccab-4361-b681-0f2e78581375" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_3c005a16-4b54-44d2-a707-8e66d0f243a1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_484309cd-ccab-4361-b681-0f2e78581375" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_3c005a16-4b54-44d2-a707-8e66d0f243a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_3c005a16-4b54-44d2-a707-8e66d0f243a1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_3c005a16-4b54-44d2-a707-8e66d0f243a1" xlink:to="loc_us-gaap_RelatedPartyDomain_3c005a16-4b54-44d2-a707-8e66d0f243a1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_4a73f9a8-1e7f-450c-af4b-d60c0287d995" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_3c005a16-4b54-44d2-a707-8e66d0f243a1" xlink:to="loc_us-gaap_RelatedPartyDomain_4a73f9a8-1e7f-450c-af4b-d60c0287d995" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_DISHNetworkMember_14df55c9-a714-46e1-9d6a-c94ff2c3b030" xlink:href="sats-20220630.xsd#sats_DISHNetworkMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_4a73f9a8-1e7f-450c-af4b-d60c0287d995" xlink:to="loc_sats_DISHNetworkMember_14df55c9-a714-46e1-9d6a-c94ff2c3b030" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfArrangementAxis_cd4f7479-c3bb-4252-978c-90e9b3c4eb6a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TypeOfArrangementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_484309cd-ccab-4361-b681-0f2e78581375" xlink:to="loc_us-gaap_TypeOfArrangementAxis_cd4f7479-c3bb-4252-978c-90e9b3c4eb6a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_cd4f7479-c3bb-4252-978c-90e9b3c4eb6a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TypeOfArrangementAxis_cd4f7479-c3bb-4252-978c-90e9b3c4eb6a" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_cd4f7479-c3bb-4252-978c-90e9b3c4eb6a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_b214a61b-6f8e-4233-8d70-4e756b0b83a6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TypeOfArrangementAxis_cd4f7479-c3bb-4252-978c-90e9b3c4eb6a" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_b214a61b-6f8e-4233-8d70-4e756b0b83a6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_DBSDNorthAmericaAgreementMember_92db13d4-6b65-40ca-b078-29548063b1cb" xlink:href="sats-20220630.xsd#sats_DBSDNorthAmericaAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_b214a61b-6f8e-4233-8d70-4e756b0b83a6" xlink:to="loc_sats_DBSDNorthAmericaAgreementMember_92db13d4-6b65-40ca-b078-29548063b1cb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_bf0fd098-386a-4af7-890f-0064b93c77b5" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_StatementScenarioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_484309cd-ccab-4361-b681-0f2e78581375" xlink:to="loc_srt_StatementScenarioAxis_bf0fd098-386a-4af7-890f-0064b93c77b5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_bf0fd098-386a-4af7-890f-0064b93c77b5_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_bf0fd098-386a-4af7-890f-0064b93c77b5" xlink:to="loc_srt_ScenarioUnspecifiedDomain_bf0fd098-386a-4af7-890f-0064b93c77b5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_a1f5771e-1b36-426e-a5db-d2f480fcfab4" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_bf0fd098-386a-4af7-890f-0064b93c77b5" xlink:to="loc_srt_ScenarioUnspecifiedDomain_a1f5771e-1b36-426e-a5db-d2f480fcfab4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioForecastMember_3eefe263-3e99-438d-9139-ed79c2994bc2" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScenarioForecastMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_a1f5771e-1b36-426e-a5db-d2f480fcfab4" xlink:to="loc_srt_ScenarioForecastMember_3eefe263-3e99-438d-9139-ed79c2994bc2" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkHughesEquipmentandServicesAgreementDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#RelatedPartyTransactionsDishNetworkHughesEquipmentandServicesAgreementDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkHughesEquipmentandServicesAgreementDetails" xlink:type="extended" id="idbdbca3b2d5b467b879e48cb8825e339_RelatedPartyTransactionsDishNetworkHughesEquipmentandServicesAgreementDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_d6a783f2-9425-40ec-b825-610c3e3f3f85" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsAgreementTerm_1709a94e-0d65-4d86-96ff-cc808710311d" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsAgreementTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_d6a783f2-9425-40ec-b825-610c3e3f3f85" xlink:to="loc_sats_RelatedPartyTransactionsAgreementTerm_1709a94e-0d65-4d86-96ff-cc808710311d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsAgreementAutomaticRenewalPeriod_928b09c7-6162-4f30-9579-e5453e1c8eae" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsAgreementAutomaticRenewalPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_d6a783f2-9425-40ec-b825-610c3e3f3f85" xlink:to="loc_sats_RelatedPartyTransactionsAgreementAutomaticRenewalPeriod_928b09c7-6162-4f30-9579-e5453e1c8eae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement_987a7b0a-3612-408d-b114-51fc6c95ff4e" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_d6a783f2-9425-40ec-b825-610c3e3f3f85" xlink:to="loc_sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement_987a7b0a-3612-408d-b114-51fc6c95ff4e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsAgreementTerminationRequiredNoticePeriodFromRelatedPartyMinimum_8384adb5-8b17-4602-bf93-66c1228f2f01" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsAgreementTerminationRequiredNoticePeriodFromRelatedPartyMinimum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_d6a783f2-9425-40ec-b825-610c3e3f3f85" xlink:to="loc_sats_RelatedPartyTransactionsAgreementTerminationRequiredNoticePeriodFromRelatedPartyMinimum_8384adb5-8b17-4602-bf93-66c1228f2f01" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_59de0590-d78d-4f2d-bf2e-6af9eda226d9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_d6a783f2-9425-40ec-b825-610c3e3f3f85" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_59de0590-d78d-4f2d-bf2e-6af9eda226d9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_aa09da14-ad60-4197-b2f7-d15743d1e1c5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_59de0590-d78d-4f2d-bf2e-6af9eda226d9" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_aa09da14-ad60-4197-b2f7-d15743d1e1c5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_aa09da14-ad60-4197-b2f7-d15743d1e1c5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_aa09da14-ad60-4197-b2f7-d15743d1e1c5" xlink:to="loc_us-gaap_RelatedPartyDomain_aa09da14-ad60-4197-b2f7-d15743d1e1c5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_4039dc95-a7f8-45d3-87aa-8767782d8008" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_aa09da14-ad60-4197-b2f7-d15743d1e1c5" xlink:to="loc_us-gaap_RelatedPartyDomain_4039dc95-a7f8-45d3-87aa-8767782d8008" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_DISHNetworkMember_bd905d8f-bedf-4212-b53d-39fc10dd092e" xlink:href="sats-20220630.xsd#sats_DISHNetworkMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_4039dc95-a7f8-45d3-87aa-8767782d8008" xlink:to="loc_sats_DISHNetworkMember_bd905d8f-bedf-4212-b53d-39fc10dd092e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfArrangementAxis_0f9f0f0d-c02f-41aa-86df-abec9ead2466" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TypeOfArrangementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_59de0590-d78d-4f2d-bf2e-6af9eda226d9" xlink:to="loc_us-gaap_TypeOfArrangementAxis_0f9f0f0d-c02f-41aa-86df-abec9ead2466" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_0f9f0f0d-c02f-41aa-86df-abec9ead2466_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TypeOfArrangementAxis_0f9f0f0d-c02f-41aa-86df-abec9ead2466" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_0f9f0f0d-c02f-41aa-86df-abec9ead2466_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_490278b4-5633-4221-b06e-8ff05d2cd5b0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TypeOfArrangementAxis_0f9f0f0d-c02f-41aa-86df-abec9ead2466" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_490278b4-5633-4221-b06e-8ff05d2cd5b0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_HughesEquipmentAndServiceAgreementMember_d9bf5217-eb52-48ea-9139-d14931d13e7a" xlink:href="sats-20220630.xsd#sats_HughesEquipmentAndServiceAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_490278b4-5633-4221-b06e-8ff05d2cd5b0" xlink:to="loc_sats_HughesEquipmentAndServiceAgreementMember_d9bf5217-eb52-48ea-9139-d14931d13e7a" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkOperatingExpensesDISHNetworkDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#RelatedPartyTransactionsDishNetworkOperatingExpensesDISHNetworkDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkOperatingExpensesDISHNetworkDetails" xlink:type="extended" id="i56621d7a9d1f4b138507b284bd370b4d_RelatedPartyTransactionsDishNetworkOperatingExpensesDISHNetworkDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_6ad27fda-34f6-493d-aab7-6a55df5d2692" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty_dc4c8a6f-e1cc-49e9-8612-b32897a2524c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_6ad27fda-34f6-493d-aab7-6a55df5d2692" xlink:to="loc_us-gaap_RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty_dc4c8a6f-e1cc-49e9-8612-b32897a2524c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableRelatedPartiesCurrentAndNoncurrent_5ee83890-35c6-4c68-9fa1-3a3dd244ffda" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsPayableRelatedPartiesCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_6ad27fda-34f6-493d-aab7-6a55df5d2692" xlink:to="loc_us-gaap_AccountsPayableRelatedPartiesCurrentAndNoncurrent_5ee83890-35c6-4c68-9fa1-3a3dd244ffda" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_7bd2a406-79d3-4f2d-9546-0b717050ba73" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_6ad27fda-34f6-493d-aab7-6a55df5d2692" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_7bd2a406-79d3-4f2d-9546-0b717050ba73" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_961b7641-93e7-4601-a257-bf518d81182d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_7bd2a406-79d3-4f2d-9546-0b717050ba73" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_961b7641-93e7-4601-a257-bf518d81182d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_961b7641-93e7-4601-a257-bf518d81182d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_961b7641-93e7-4601-a257-bf518d81182d" xlink:to="loc_us-gaap_RelatedPartyDomain_961b7641-93e7-4601-a257-bf518d81182d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_97a49c5d-039c-480d-995d-fd71260ea039" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_961b7641-93e7-4601-a257-bf518d81182d" xlink:to="loc_us-gaap_RelatedPartyDomain_97a49c5d-039c-480d-995d-fd71260ea039" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_DISHNetworkMember_b7fa22f8-f900-4800-b7cb-42269e989b7b" xlink:href="sats-20220630.xsd#sats_DISHNetworkMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_97a49c5d-039c-480d-995d-fd71260ea039" xlink:to="loc_sats_DISHNetworkMember_b7fa22f8-f900-4800-b7cb-42269e989b7b" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkAmendedandRestatedProfessionalServicesAgreementDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#RelatedPartyTransactionsDishNetworkAmendedandRestatedProfessionalServicesAgreementDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkAmendedandRestatedProfessionalServicesAgreementDetails" xlink:type="extended" id="ifcdacaf6d0514f14aa04f6c4d3a87fda_RelatedPartyTransactionsDishNetworkAmendedandRestatedProfessionalServicesAgreementDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_ae66a7b2-d0f1-4b94-a05e-92f2dc729223" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsAgreementAutomaticRenewalPeriod_792084a4-37f3-498f-8dc5-ef887ad9031d" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsAgreementAutomaticRenewalPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_ae66a7b2-d0f1-4b94-a05e-92f2dc729223" xlink:to="loc_sats_RelatedPartyTransactionsAgreementAutomaticRenewalPeriod_792084a4-37f3-498f-8dc5-ef887ad9031d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement_2c38f9c6-b060-4178-835c-dc69a8e9fb68" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_ae66a7b2-d0f1-4b94-a05e-92f2dc729223" xlink:to="loc_sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement_2c38f9c6-b060-4178-835c-dc69a8e9fb68" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfSpecificService_8bea1765-b02a-4100-bdea-0a815cafeb24" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfSpecificService"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_ae66a7b2-d0f1-4b94-a05e-92f2dc729223" xlink:to="loc_sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfSpecificService_8bea1765-b02a-4100-bdea-0a815cafeb24" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_fa2a0a89-ea8e-4383-8486-3c5d2fb97e61" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_ae66a7b2-d0f1-4b94-a05e-92f2dc729223" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_fa2a0a89-ea8e-4383-8486-3c5d2fb97e61" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_43989f2a-185c-4638-809e-a7010db98cdb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_fa2a0a89-ea8e-4383-8486-3c5d2fb97e61" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_43989f2a-185c-4638-809e-a7010db98cdb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_43989f2a-185c-4638-809e-a7010db98cdb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_43989f2a-185c-4638-809e-a7010db98cdb" xlink:to="loc_us-gaap_RelatedPartyDomain_43989f2a-185c-4638-809e-a7010db98cdb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_0f35dad2-4275-42fe-8731-a0e34ac07e4f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_43989f2a-185c-4638-809e-a7010db98cdb" xlink:to="loc_us-gaap_RelatedPartyDomain_0f35dad2-4275-42fe-8731-a0e34ac07e4f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_DISHNetworkMember_0ebf2b3f-a84e-4bd3-a148-552fc6a4c47e" xlink:href="sats-20220630.xsd#sats_DISHNetworkMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_0f35dad2-4275-42fe-8731-a0e34ac07e4f" xlink:to="loc_sats_DISHNetworkMember_0ebf2b3f-a84e-4bd3-a148-552fc6a4c47e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfArrangementAxis_f200d933-1526-47a5-aea0-4bb03d18f21b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TypeOfArrangementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_fa2a0a89-ea8e-4383-8486-3c5d2fb97e61" xlink:to="loc_us-gaap_TypeOfArrangementAxis_f200d933-1526-47a5-aea0-4bb03d18f21b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_f200d933-1526-47a5-aea0-4bb03d18f21b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TypeOfArrangementAxis_f200d933-1526-47a5-aea0-4bb03d18f21b" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_f200d933-1526-47a5-aea0-4bb03d18f21b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_89b6bb48-3f6e-4da8-a4d1-23355a49d56b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TypeOfArrangementAxis_f200d933-1526-47a5-aea0-4bb03d18f21b" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_89b6bb48-3f6e-4da8-a4d1-23355a49d56b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_AmendedandRestatedProfessionalServicesAgreementMember_a137e1d0-8cbd-4bf9-b97c-0c9af022d7c2" xlink:href="sats-20220630.xsd#sats_AmendedandRestatedProfessionalServicesAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_89b6bb48-3f6e-4da8-a4d1-23355a49d56b" xlink:to="loc_sats_AmendedandRestatedProfessionalServicesAgreementMember_a137e1d0-8cbd-4bf9-b97c-0c9af022d7c2" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkRealEstateLeasesFromDISHNetworkDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#RelatedPartyTransactionsDishNetworkRealEstateLeasesFromDISHNetworkDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkRealEstateLeasesFromDISHNetworkDetails" xlink:type="extended" id="i2326e409c98f45acb3e6698a39806a0a_RelatedPartyTransactionsDishNetworkRealEstateLeasesFromDISHNetworkDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_fc57e7f6-1e06-470a-bb6c-925f7c363c34" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseTermOfContract_41335307-ee9e-46e4-8a95-c5dc3af2e605" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseTermOfContract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_fc57e7f6-1e06-470a-bb6c-925f7c363c34" xlink:to="loc_us-gaap_LesseeOperatingLeaseTermOfContract_41335307-ee9e-46e4-8a95-c5dc3af2e605" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseRenewalTerm_2af5ff33-e9ef-428c-ba35-76fd5486b2f8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseRenewalTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_fc57e7f6-1e06-470a-bb6c-925f7c363c34" xlink:to="loc_us-gaap_LesseeOperatingLeaseRenewalTerm_2af5ff33-e9ef-428c-ba35-76fd5486b2f8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_LesseeOperatingLeaseAdditionalRenewalTerm_15443f8f-4884-416f-8ed8-75e16f70ba60" xlink:href="sats-20220630.xsd#sats_LesseeOperatingLeaseAdditionalRenewalTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_fc57e7f6-1e06-470a-bb6c-925f7c363c34" xlink:to="loc_sats_LesseeOperatingLeaseAdditionalRenewalTerm_15443f8f-4884-416f-8ed8-75e16f70ba60" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsAgreementTerm_0d5cf543-c521-486b-a1cd-4a8f2cbb0cc6" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsAgreementTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_fc57e7f6-1e06-470a-bb6c-925f7c363c34" xlink:to="loc_sats_RelatedPartyTransactionsAgreementTerm_0d5cf543-c521-486b-a1cd-4a8f2cbb0cc6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_46c24007-6f81-4a6b-9553-81e76634a303" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_fc57e7f6-1e06-470a-bb6c-925f7c363c34" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_46c24007-6f81-4a6b-9553-81e76634a303" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionAxis_75474541-4cf3-42df-9cf2-8e982e686ba9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_46c24007-6f81-4a6b-9553-81e76634a303" xlink:to="loc_us-gaap_RelatedPartyTransactionAxis_75474541-4cf3-42df-9cf2-8e982e686ba9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_75474541-4cf3-42df-9cf2-8e982e686ba9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_75474541-4cf3-42df-9cf2-8e982e686ba9" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_75474541-4cf3-42df-9cf2-8e982e686ba9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_29de6460-dd7a-4bc0-8e4f-3dd97b352f26" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_75474541-4cf3-42df-9cf2-8e982e686ba9" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_29de6460-dd7a-4bc0-8e4f-3dd97b352f26" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsLesseeOperatingLeaseRealEstateMember_03fa1431-bf09-4b51-8a15-0237200e1397" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsLesseeOperatingLeaseRealEstateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_29de6460-dd7a-4bc0-8e4f-3dd97b352f26" xlink:to="loc_sats_RelatedPartyTransactionsLesseeOperatingLeaseRealEstateMember_03fa1431-bf09-4b51-8a15-0237200e1397" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_8c731c7d-e869-4cde-843c-0a41ecf6f8f6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_46c24007-6f81-4a6b-9553-81e76634a303" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_8c731c7d-e869-4cde-843c-0a41ecf6f8f6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_8c731c7d-e869-4cde-843c-0a41ecf6f8f6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_8c731c7d-e869-4cde-843c-0a41ecf6f8f6" xlink:to="loc_us-gaap_RelatedPartyDomain_8c731c7d-e869-4cde-843c-0a41ecf6f8f6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_c252e36f-b7ed-4ed6-82ac-472292a4e7a9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_8c731c7d-e869-4cde-843c-0a41ecf6f8f6" xlink:to="loc_us-gaap_RelatedPartyDomain_c252e36f-b7ed-4ed6-82ac-472292a4e7a9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_DISHNetworkMember_6169d968-505a-4f44-b0ea-faa249a43a08" xlink:href="sats-20220630.xsd#sats_DISHNetworkMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_c252e36f-b7ed-4ed6-82ac-472292a4e7a9" xlink:to="loc_sats_DISHNetworkMember_6169d968-505a-4f44-b0ea-faa249a43a08" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfArrangementAxis_445a3799-eeaf-4ef7-a9c4-d434bf8453e9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TypeOfArrangementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_46c24007-6f81-4a6b-9553-81e76634a303" xlink:to="loc_us-gaap_TypeOfArrangementAxis_445a3799-eeaf-4ef7-a9c4-d434bf8453e9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_445a3799-eeaf-4ef7-a9c4-d434bf8453e9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TypeOfArrangementAxis_445a3799-eeaf-4ef7-a9c4-d434bf8453e9" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_445a3799-eeaf-4ef7-a9c4-d434bf8453e9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_2921ec38-3f9d-4648-9092-c37cea69c269" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TypeOfArrangementAxis_445a3799-eeaf-4ef7-a9c4-d434bf8453e9" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_2921ec38-3f9d-4648-9092-c37cea69c269" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_CheyenneLeaseAgreementMember_0c344de5-aafa-43cf-be83-ddd29e294c23" xlink:href="sats-20220630.xsd#sats_CheyenneLeaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_2921ec38-3f9d-4648-9092-c37cea69c269" xlink:to="loc_sats_CheyenneLeaseAgreementMember_0c344de5-aafa-43cf-be83-ddd29e294c23" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkCollocationandAntennaSpaceAgreementsDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#RelatedPartyTransactionsDishNetworkCollocationandAntennaSpaceAgreementsDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkCollocationandAntennaSpaceAgreementsDetails" xlink:type="extended" id="ia8c95219d8ec4d88bf60db38bad3052c_RelatedPartyTransactionsDishNetworkCollocationandAntennaSpaceAgreementsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_9c191e5d-0c1c-45d0-a424-261cd42cf68b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionAgreementRenewalOptionNumberOfRenewalTerms_57940dd2-d9bd-4e6c-8949-e96b3dffd04d" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionAgreementRenewalOptionNumberOfRenewalTerms"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_9c191e5d-0c1c-45d0-a424-261cd42cf68b" xlink:to="loc_sats_RelatedPartyTransactionAgreementRenewalOptionNumberOfRenewalTerms_57940dd2-d9bd-4e6c-8949-e96b3dffd04d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsAgreementRenewalOptionTerm_9d4a5c90-c859-4aeb-93f8-fd5e39849a65" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsAgreementRenewalOptionTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_9c191e5d-0c1c-45d0-a424-261cd42cf68b" xlink:to="loc_sats_RelatedPartyTransactionsAgreementRenewalOptionTerm_9d4a5c90-c859-4aeb-93f8-fd5e39849a65" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsAgreementRenewalNoticeRequiredbyReportingEntity_2f19e65e-ea89-4506-a238-da529c83b85f" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsAgreementRenewalNoticeRequiredbyReportingEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_9c191e5d-0c1c-45d0-a424-261cd42cf68b" xlink:to="loc_sats_RelatedPartyTransactionsAgreementRenewalNoticeRequiredbyReportingEntity_2f19e65e-ea89-4506-a238-da529c83b85f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsAgreementTerminationNoticeRequiredByReportingEntity_37855ce3-10dd-48b2-8c4e-1c75351c79e4" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsAgreementTerminationNoticeRequiredByReportingEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_9c191e5d-0c1c-45d0-a424-261cd42cf68b" xlink:to="loc_sats_RelatedPartyTransactionsAgreementTerminationNoticeRequiredByReportingEntity_37855ce3-10dd-48b2-8c4e-1c75351c79e4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsAgreementTerm_efec05ea-41fd-4fa1-9aa1-bd8de729b02d" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsAgreementTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_9c191e5d-0c1c-45d0-a424-261cd42cf68b" xlink:to="loc_sats_RelatedPartyTransactionsAgreementTerm_efec05ea-41fd-4fa1-9aa1-bd8de729b02d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_5fb2a2d3-06ae-4e12-ba0c-8f8abeae1a6b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_9c191e5d-0c1c-45d0-a424-261cd42cf68b" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_5fb2a2d3-06ae-4e12-ba0c-8f8abeae1a6b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_7a9a764f-76a8-4d1e-b2d4-2ffdf41bdc2f" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_5fb2a2d3-06ae-4e12-ba0c-8f8abeae1a6b" xlink:to="loc_srt_RangeAxis_7a9a764f-76a8-4d1e-b2d4-2ffdf41bdc2f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_7a9a764f-76a8-4d1e-b2d4-2ffdf41bdc2f_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_7a9a764f-76a8-4d1e-b2d4-2ffdf41bdc2f" xlink:to="loc_srt_RangeMember_7a9a764f-76a8-4d1e-b2d4-2ffdf41bdc2f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_f3ce3dfd-2ddc-4f7e-a3f9-c9c6e335861c" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_7a9a764f-76a8-4d1e-b2d4-2ffdf41bdc2f" xlink:to="loc_srt_RangeMember_f3ce3dfd-2ddc-4f7e-a3f9-c9c6e335861c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_5d231d9a-141c-4915-97b9-7279390a9489" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_f3ce3dfd-2ddc-4f7e-a3f9-c9c6e335861c" xlink:to="loc_srt_MaximumMember_5d231d9a-141c-4915-97b9-7279390a9489" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_98cff2d7-0a8e-4328-a19c-97da19fd6cad" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_f3ce3dfd-2ddc-4f7e-a3f9-c9c6e335861c" xlink:to="loc_srt_MinimumMember_98cff2d7-0a8e-4328-a19c-97da19fd6cad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_eb6b315d-a8fd-4f7f-8a7c-d2467d2922db" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_5fb2a2d3-06ae-4e12-ba0c-8f8abeae1a6b" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_eb6b315d-a8fd-4f7f-8a7c-d2467d2922db" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_eb6b315d-a8fd-4f7f-8a7c-d2467d2922db_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_eb6b315d-a8fd-4f7f-8a7c-d2467d2922db" xlink:to="loc_us-gaap_RelatedPartyDomain_eb6b315d-a8fd-4f7f-8a7c-d2467d2922db_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_e2f3623d-3dfd-471c-b53d-8342e2af45c1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_eb6b315d-a8fd-4f7f-8a7c-d2467d2922db" xlink:to="loc_us-gaap_RelatedPartyDomain_e2f3623d-3dfd-471c-b53d-8342e2af45c1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_DISHNetworkMember_d4f30e59-b80d-41e1-b67f-302faa89b517" xlink:href="sats-20220630.xsd#sats_DISHNetworkMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_e2f3623d-3dfd-471c-b53d-8342e2af45c1" xlink:to="loc_sats_DISHNetworkMember_d4f30e59-b80d-41e1-b67f-302faa89b517" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfArrangementAxis_2e762cf3-75e7-4f10-8b66-27c8c0e70eb0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TypeOfArrangementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_5fb2a2d3-06ae-4e12-ba0c-8f8abeae1a6b" xlink:to="loc_us-gaap_TypeOfArrangementAxis_2e762cf3-75e7-4f10-8b66-27c8c0e70eb0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_2e762cf3-75e7-4f10-8b66-27c8c0e70eb0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TypeOfArrangementAxis_2e762cf3-75e7-4f10-8b66-27c8c0e70eb0" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_2e762cf3-75e7-4f10-8b66-27c8c0e70eb0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_bcc2e2c2-ed7a-4326-814d-6843c0f32bf4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TypeOfArrangementAxis_2e762cf3-75e7-4f10-8b66-27c8c0e70eb0" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_bcc2e2c2-ed7a-4326-814d-6843c0f32bf4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_CollocationandAntennaSpaceAgreementsMember_2042ab87-1459-408e-bc2a-6ab6a4541b0e" xlink:href="sats-20220630.xsd#sats_CollocationandAntennaSpaceAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_bcc2e2c2-ed7a-4326-814d-6843c0f32bf4" xlink:to="loc_sats_CollocationandAntennaSpaceAgreementsMember_2042ab87-1459-408e-bc2a-6ab6a4541b0e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_ca3755ad-c5cb-435e-8a0d-89f420b8e434" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_5fb2a2d3-06ae-4e12-ba0c-8f8abeae1a6b" xlink:to="loc_srt_StatementGeographicalAxis_ca3755ad-c5cb-435e-8a0d-89f420b8e434" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_ca3755ad-c5cb-435e-8a0d-89f420b8e434_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_ca3755ad-c5cb-435e-8a0d-89f420b8e434" xlink:to="loc_srt_SegmentGeographicalDomain_ca3755ad-c5cb-435e-8a0d-89f420b8e434_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_cd0387b9-eb8f-4472-b23b-6208d86669e7" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_ca3755ad-c5cb-435e-8a0d-89f420b8e434" xlink:to="loc_srt_SegmentGeographicalDomain_cd0387b9-eb8f-4472-b23b-6208d86669e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_CheyenneWyomingMember_526b0308-6026-465b-b744-92b0d424faab" xlink:href="sats-20220630.xsd#sats_CheyenneWyomingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_cd0387b9-eb8f-4472-b23b-6208d86669e7" xlink:to="loc_sats_CheyenneWyomingMember_526b0308-6026-465b-b744-92b0d424faab" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_CheyenneWyomingAndGilbertArizonaMember_754eb9de-f631-423a-a306-cb704327c5a0" xlink:href="sats-20220630.xsd#sats_CheyenneWyomingAndGilbertArizonaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_cd0387b9-eb8f-4472-b23b-6208d86669e7" xlink:to="loc_sats_CheyenneWyomingAndGilbertArizonaMember_754eb9de-f631-423a-a306-cb704327c5a0" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkHughesBroadbandMasterServicesAgreementDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#RelatedPartyTransactionsDishNetworkHughesBroadbandMasterServicesAgreementDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkHughesBroadbandMasterServicesAgreementDetails" xlink:type="extended" id="i790ac78f25f74530953f810c32208f84_RelatedPartyTransactionsDishNetworkHughesBroadbandMasterServicesAgreementDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_7281ba55-bdc4-4ede-9a00-52e585f08f3f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsAgreementAutomaticRenewalPeriod_585b3410-c9ad-44ae-be33-d1d918613efa" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsAgreementAutomaticRenewalPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_7281ba55-bdc4-4ede-9a00-52e585f08f3f" xlink:to="loc_sats_RelatedPartyTransactionsAgreementAutomaticRenewalPeriod_585b3410-c9ad-44ae-be33-d1d918613efa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement_d5181618-322c-4715-921e-5d44530ec206" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_7281ba55-bdc4-4ede-9a00-52e585f08f3f" xlink:to="loc_sats_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement_d5181618-322c-4715-921e-5d44530ec206" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesCommissionsAndFees_a032b19c-4c19-4091-8524-960830ed6117" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SalesCommissionsAndFees"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_7281ba55-bdc4-4ede-9a00-52e585f08f3f" xlink:to="loc_us-gaap_SalesCommissionsAndFees_a032b19c-4c19-4091-8524-960830ed6117" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_06fa7bcc-4583-4473-9b4b-2044dcac04cd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_7281ba55-bdc4-4ede-9a00-52e585f08f3f" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_06fa7bcc-4583-4473-9b4b-2044dcac04cd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_75da730b-8b9b-43a2-b3f3-872cade61219" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_06fa7bcc-4583-4473-9b4b-2044dcac04cd" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_75da730b-8b9b-43a2-b3f3-872cade61219" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_75da730b-8b9b-43a2-b3f3-872cade61219_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_75da730b-8b9b-43a2-b3f3-872cade61219" xlink:to="loc_us-gaap_RelatedPartyDomain_75da730b-8b9b-43a2-b3f3-872cade61219_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_0636eed3-9bed-475a-9f4b-673b1d11d077" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_75da730b-8b9b-43a2-b3f3-872cade61219" xlink:to="loc_us-gaap_RelatedPartyDomain_0636eed3-9bed-475a-9f4b-673b1d11d077" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_DISHNetworkMember_08f1835f-a7d7-4f43-b63a-f9a70116a0da" xlink:href="sats-20220630.xsd#sats_DISHNetworkMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_0636eed3-9bed-475a-9f4b-673b1d11d077" xlink:to="loc_sats_DISHNetworkMember_08f1835f-a7d7-4f43-b63a-f9a70116a0da" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfArrangementAxis_32df2cc7-1062-41a6-b941-78bf194e1035" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TypeOfArrangementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_06fa7bcc-4583-4473-9b4b-2044dcac04cd" xlink:to="loc_us-gaap_TypeOfArrangementAxis_32df2cc7-1062-41a6-b941-78bf194e1035" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_32df2cc7-1062-41a6-b941-78bf194e1035_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TypeOfArrangementAxis_32df2cc7-1062-41a6-b941-78bf194e1035" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_32df2cc7-1062-41a6-b941-78bf194e1035_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_83df938c-4c50-4419-8791-ac1cf8a2584d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TypeOfArrangementAxis_32df2cc7-1062-41a6-b941-78bf194e1035" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_83df938c-4c50-4419-8791-ac1cf8a2584d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_HughesBroadbandMasterServicesAgreementMember_40a172c6-4863-4095-a517-364e4f2cb973" xlink:href="sats-20220630.xsd#sats_HughesBroadbandMasterServicesAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_83df938c-4c50-4419-8791-ac1cf8a2584d" xlink:to="loc_sats_HughesBroadbandMasterServicesAgreementMember_40a172c6-4863-4095-a517-364e4f2cb973" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/RelatedPartyTransactionsDishNetwork2019TTCAgreementDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#RelatedPartyTransactionsDishNetwork2019TTCAgreementDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/RelatedPartyTransactionsDishNetwork2019TTCAgreementDetails" xlink:type="extended" id="i68ee9ed6ab664adc9cae0cf98d1b3e54_RelatedPartyTransactionsDishNetwork2019TTCAgreementDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_54f33ded-c4d0-42c8-9e12-1ad550df9c4c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsAgreementRenewalOptionTerm_937c05e0-5563-4194-9621-6b34d9c466ee" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsAgreementRenewalOptionTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_54f33ded-c4d0-42c8-9e12-1ad550df9c4c" xlink:to="loc_sats_RelatedPartyTransactionsAgreementRenewalOptionTerm_937c05e0-5563-4194-9621-6b34d9c466ee" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsAgreementRenewalNoticeRequiredbyReportingEntity_57950487-fde3-4830-ad98-471ae4a4087b" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsAgreementRenewalNoticeRequiredbyReportingEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_54f33ded-c4d0-42c8-9e12-1ad550df9c4c" xlink:to="loc_sats_RelatedPartyTransactionsAgreementRenewalNoticeRequiredbyReportingEntity_57950487-fde3-4830-ad98-471ae4a4087b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyTransactionsAgreementTerminationNoticeRequiredByReportingEntity_c15f89e5-f565-403e-9c5b-bcc74edfece9" xlink:href="sats-20220630.xsd#sats_RelatedPartyTransactionsAgreementTerminationNoticeRequiredByReportingEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_54f33ded-c4d0-42c8-9e12-1ad550df9c4c" xlink:to="loc_sats_RelatedPartyTransactionsAgreementTerminationNoticeRequiredByReportingEntity_c15f89e5-f565-403e-9c5b-bcc74edfece9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_a5f5bcce-71e4-4daf-ae3d-0786d1071965" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_54f33ded-c4d0-42c8-9e12-1ad550df9c4c" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_a5f5bcce-71e4-4daf-ae3d-0786d1071965" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_7498f3da-5c8b-45a3-a9b9-14923251004c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_a5f5bcce-71e4-4daf-ae3d-0786d1071965" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_7498f3da-5c8b-45a3-a9b9-14923251004c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_7498f3da-5c8b-45a3-a9b9-14923251004c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_7498f3da-5c8b-45a3-a9b9-14923251004c" xlink:to="loc_us-gaap_RelatedPartyDomain_7498f3da-5c8b-45a3-a9b9-14923251004c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_de59aa12-7e80-4000-a36b-d8dbc5b38b2d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_7498f3da-5c8b-45a3-a9b9-14923251004c" xlink:to="loc_us-gaap_RelatedPartyDomain_de59aa12-7e80-4000-a36b-d8dbc5b38b2d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_DISHNetworkMember_39f2999e-769d-480a-b480-06848b24a6f2" xlink:href="sats-20220630.xsd#sats_DISHNetworkMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_de59aa12-7e80-4000-a36b-d8dbc5b38b2d" xlink:to="loc_sats_DISHNetworkMember_39f2999e-769d-480a-b480-06848b24a6f2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfArrangementAxis_63ba4f88-6df7-4392-8839-56364d6a4a04" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TypeOfArrangementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_a5f5bcce-71e4-4daf-ae3d-0786d1071965" xlink:to="loc_us-gaap_TypeOfArrangementAxis_63ba4f88-6df7-4392-8839-56364d6a4a04" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_63ba4f88-6df7-4392-8839-56364d6a4a04_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TypeOfArrangementAxis_63ba4f88-6df7-4392-8839-56364d6a4a04" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_63ba4f88-6df7-4392-8839-56364d6a4a04_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_e8b2796d-b19c-47a4-a3d1-5c1a996ce8f0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TypeOfArrangementAxis_63ba4f88-6df7-4392-8839-56364d6a4a04" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_e8b2796d-b19c-47a4-a3d1-5c1a996ce8f0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_TTCAgreementMember_ca272c4f-5d49-4f1b-86be-1feb11850f16" xlink:href="sats-20220630.xsd#sats_TTCAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_e8b2796d-b19c-47a4-a3d1-5c1a996ce8f0" xlink:to="loc_sats_TTCAgreementMember_ca272c4f-5d49-4f1b-86be-1feb11850f16" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/RelatedPartyDisclosuresDISHNetworkReferralMarketingAgreementDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#RelatedPartyDisclosuresDISHNetworkReferralMarketingAgreementDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/RelatedPartyDisclosuresDISHNetworkReferralMarketingAgreementDetails" xlink:type="extended" id="i76c86a6ef0474b32b3158bc127993f8f_RelatedPartyDisclosuresDISHNetworkReferralMarketingAgreementDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_cdd233a9-9bbe-4334-b4bb-3ea8473aafdf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_RelatedPartyAgreementTerminationNotice_024e723e-9abc-47c4-8945-baa8d8804854" xlink:href="sats-20220630.xsd#sats_RelatedPartyAgreementTerminationNotice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_cdd233a9-9bbe-4334-b4bb-3ea8473aafdf" xlink:to="loc_sats_RelatedPartyAgreementTerminationNotice_024e723e-9abc-47c4-8945-baa8d8804854" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_68e878e0-b74f-4fa0-a6b8-7859d2ecd9f2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_cdd233a9-9bbe-4334-b4bb-3ea8473aafdf" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_68e878e0-b74f-4fa0-a6b8-7859d2ecd9f2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_bbf92ca2-f3ca-4089-8c8a-5234d57e510f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_68e878e0-b74f-4fa0-a6b8-7859d2ecd9f2" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_bbf92ca2-f3ca-4089-8c8a-5234d57e510f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_bbf92ca2-f3ca-4089-8c8a-5234d57e510f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_bbf92ca2-f3ca-4089-8c8a-5234d57e510f" xlink:to="loc_us-gaap_RelatedPartyDomain_bbf92ca2-f3ca-4089-8c8a-5234d57e510f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_cc2128fc-77ed-49df-af54-f4b33c6a3aea" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_bbf92ca2-f3ca-4089-8c8a-5234d57e510f" xlink:to="loc_us-gaap_RelatedPartyDomain_cc2128fc-77ed-49df-af54-f4b33c6a3aea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_DISHNetworkMember_35ea79ab-c0c2-42a3-b7fe-3d0d0764a4d7" xlink:href="sats-20220630.xsd#sats_DISHNetworkMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_cc2128fc-77ed-49df-af54-f4b33c6a3aea" xlink:to="loc_sats_DISHNetworkMember_35ea79ab-c0c2-42a3-b7fe-3d0d0764a4d7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfArrangementAxis_b3155e9d-301f-4401-9db8-cdae0656b133" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TypeOfArrangementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_68e878e0-b74f-4fa0-a6b8-7859d2ecd9f2" xlink:to="loc_us-gaap_TypeOfArrangementAxis_b3155e9d-301f-4401-9db8-cdae0656b133" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_b3155e9d-301f-4401-9db8-cdae0656b133_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TypeOfArrangementAxis_b3155e9d-301f-4401-9db8-cdae0656b133" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_b3155e9d-301f-4401-9db8-cdae0656b133_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_9c3c2642-d0ab-4b9e-b294-ecac674791fc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TypeOfArrangementAxis_b3155e9d-301f-4401-9db8-cdae0656b133" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_9c3c2642-d0ab-4b9e-b294-ecac674791fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_ReferralMarketingAgreementMember_2e5883a6-5ede-4efb-945e-8bd625543e59" xlink:href="sats-20220630.xsd#sats_ReferralMarketingAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_9c3c2642-d0ab-4b9e-b294-ecac674791fc" xlink:to="loc_sats_ReferralMarketingAgreementMember_2e5883a6-5ede-4efb-945e-8bd625543e59" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkOtherReceivablesDISHNetworkDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#RelatedPartyTransactionsDishNetworkOtherReceivablesDISHNetworkDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkOtherReceivablesDISHNetworkDetails" xlink:type="extended" id="ie4f8e29f4fe84938b6b690b2802c2c80_RelatedPartyTransactionsDishNetworkOtherReceivablesDISHNetworkDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_848e1de3-aa21-44fe-8248-ec0ae8bcb5ee" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherReceivablesNetCurrent_31232af9-a552-4450-b814-95e17d6c8ff6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherReceivablesNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_848e1de3-aa21-44fe-8248-ec0ae8bcb5ee" xlink:to="loc_us-gaap_OtherReceivablesNetCurrent_31232af9-a552-4450-b814-95e17d6c8ff6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_OtherReceivablesNoncurrent_f5780542-d932-48d1-bed7-0c4466fb8fc5" xlink:href="sats-20220630.xsd#sats_OtherReceivablesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_848e1de3-aa21-44fe-8248-ec0ae8bcb5ee" xlink:to="loc_sats_OtherReceivablesNoncurrent_f5780542-d932-48d1-bed7-0c4466fb8fc5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_bc19afc3-c771-492a-a630-0a999171605c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_848e1de3-aa21-44fe-8248-ec0ae8bcb5ee" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_bc19afc3-c771-492a-a630-0a999171605c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_e3a087df-3875-4653-986e-c239c9d1ad1e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_bc19afc3-c771-492a-a630-0a999171605c" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_e3a087df-3875-4653-986e-c239c9d1ad1e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_e3a087df-3875-4653-986e-c239c9d1ad1e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_e3a087df-3875-4653-986e-c239c9d1ad1e" xlink:to="loc_us-gaap_RelatedPartyDomain_e3a087df-3875-4653-986e-c239c9d1ad1e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_5c39d6c6-e362-418d-b2fc-89fcbc1024ca" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_e3a087df-3875-4653-986e-c239c9d1ad1e" xlink:to="loc_us-gaap_RelatedPartyDomain_5c39d6c6-e362-418d-b2fc-89fcbc1024ca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_DISHNetworkMember_1198a7a9-4c84-4882-b351-4a1b54a10e7e" xlink:href="sats-20220630.xsd#sats_DISHNetworkMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_5c39d6c6-e362-418d-b2fc-89fcbc1024ca" xlink:to="loc_sats_DISHNetworkMember_1198a7a9-4c84-4882-b351-4a1b54a10e7e" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkOtherAgreementsDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#RelatedPartyTransactionsDishNetworkOtherAgreementsDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/RelatedPartyTransactionsDishNetworkOtherAgreementsDetails" xlink:type="extended" id="i83b60b5688c34853a96c1d54f078ad58_RelatedPartyTransactionsDishNetworkOtherAgreementsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_d8d6dc1c-23e5-44e2-9253-88b13567828a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableEntitySharesIssuedPerAcquireeShare_edf12b9e-d596-4ba9-828c-84584e76d90a" xlink:href="sats-20220630.xsd#sats_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableEntitySharesIssuedPerAcquireeShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_d8d6dc1c-23e5-44e2-9253-88b13567828a" xlink:to="loc_sats_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableEntitySharesIssuedPerAcquireeShare_edf12b9e-d596-4ba9-828c-84584e76d90a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_d436c8ab-da21-4c71-abda-b665f8f88c26" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_d8d6dc1c-23e5-44e2-9253-88b13567828a" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_d436c8ab-da21-4c71-abda-b665f8f88c26" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_13c17271-90cc-4874-aafa-f028b42af8f4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_d436c8ab-da21-4c71-abda-b665f8f88c26" xlink:to="loc_us-gaap_StatementClassOfStockAxis_13c17271-90cc-4874-aafa-f028b42af8f4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_13c17271-90cc-4874-aafa-f028b42af8f4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_13c17271-90cc-4874-aafa-f028b42af8f4" xlink:to="loc_us-gaap_ClassOfStockDomain_13c17271-90cc-4874-aafa-f028b42af8f4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_83a2a0ac-fd3d-49d9-b528-5d4d971ed0f3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_13c17271-90cc-4874-aafa-f028b42af8f4" xlink:to="loc_us-gaap_ClassOfStockDomain_83a2a0ac-fd3d-49d9-b528-5d4d971ed0f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_a2c4bd99-bc2c-471f-9300-ee704f6b00bf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_83a2a0ac-fd3d-49d9-b528-5d4d971ed0f3" xlink:to="loc_us-gaap_CommonClassAMember_a2c4bd99-bc2c-471f-9300-ee704f6b00bf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_7e3c9192-94db-4239-be38-e75acd16766a" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_d436c8ab-da21-4c71-abda-b665f8f88c26" xlink:to="loc_dei_LegalEntityAxis_7e3c9192-94db-4239-be38-e75acd16766a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_7e3c9192-94db-4239-be38-e75acd16766a_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_7e3c9192-94db-4239-be38-e75acd16766a" xlink:to="loc_dei_EntityDomain_7e3c9192-94db-4239-be38-e75acd16766a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a53c560a-2450-43c9-b3cb-ccda3f0c6610" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_7e3c9192-94db-4239-be38-e75acd16766a" xlink:to="loc_dei_EntityDomain_a53c560a-2450-43c9-b3cb-ccda3f0c6610" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_DISHNetworkMember_2e3cca02-cea7-41b7-af85-8e4100e752ee" xlink:href="sats-20220630.xsd#sats_DISHNetworkMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_a53c560a-2450-43c9-b3cb-ccda3f0c6610" xlink:to="loc_sats_DISHNetworkMember_2e3cca02-cea7-41b7-af85-8e4100e752ee" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/RelatedPartyTransactionsOtherDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#RelatedPartyTransactionsOtherDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/RelatedPartyTransactionsOtherDetails" xlink:type="extended" id="i5459284e0b5542388f2930ba4fe38a42_RelatedPartyTransactionsOtherDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_f34fb437-9f11-47c2-8abb-c3ed165657ba" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityOwnershipPercentage_fd98c3ed-5718-4716-b75a-c961bd1e1a0e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VariableInterestEntityOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_f34fb437-9f11-47c2-8abb-c3ed165657ba" xlink:to="loc_us-gaap_VariableInterestEntityOwnershipPercentage_fd98c3ed-5718-4716-b75a-c961bd1e1a0e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_PercentageOwnershipInVariableInterestEntityByOtherRelatedParties_1c1a7d55-0767-46a2-aab7-dae2a34faecd" xlink:href="sats-20220630.xsd#sats_PercentageOwnershipInVariableInterestEntityByOtherRelatedParties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_f34fb437-9f11-47c2-8abb-c3ed165657ba" xlink:to="loc_sats_PercentageOwnershipInVariableInterestEntityByOtherRelatedParties_1c1a7d55-0767-46a2-aab7-dae2a34faecd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_CostMethodInvestmentNonvotingInterestOwnershipPercentage_2f9f9174-5f15-4017-8b37-f16e09abd3e2" xlink:href="sats-20220630.xsd#sats_CostMethodInvestmentNonvotingInterestOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_f34fb437-9f11-47c2-8abb-c3ed165657ba" xlink:to="loc_sats_CostMethodInvestmentNonvotingInterestOwnershipPercentage_2f9f9174-5f15-4017-8b37-f16e09abd3e2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromRelatedParties_ed06ac35-6c65-4390-a588-e099eff16e01" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueFromRelatedParties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_f34fb437-9f11-47c2-8abb-c3ed165657ba" xlink:to="loc_us-gaap_RevenueFromRelatedParties_ed06ac35-6c65-4390-a588-e099eff16e01" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableRelatedParties_d127270f-edb1-44f5-9e22-4abfbc363fd6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsReceivableRelatedParties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_f34fb437-9f11-47c2-8abb-c3ed165657ba" xlink:to="loc_us-gaap_AccountsReceivableRelatedParties_d127270f-edb1-44f5-9e22-4abfbc363fd6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_ab1acb1d-9f76-4fd2-87f3-7d3903c110ec" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_f34fb437-9f11-47c2-8abb-c3ed165657ba" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_ab1acb1d-9f76-4fd2-87f3-7d3903c110ec" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_8d3f25cb-929b-441e-8144-1a62f7fcafca" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_ab1acb1d-9f76-4fd2-87f3-7d3903c110ec" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_8d3f25cb-929b-441e-8144-1a62f7fcafca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_8d3f25cb-929b-441e-8144-1a62f7fcafca_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_8d3f25cb-929b-441e-8144-1a62f7fcafca" xlink:to="loc_us-gaap_RelatedPartyDomain_8d3f25cb-929b-441e-8144-1a62f7fcafca_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_f3c0f801-2c95-45ca-88a8-f3e66f74785a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_8d3f25cb-929b-441e-8144-1a62f7fcafca" xlink:to="loc_us-gaap_RelatedPartyDomain_f3c0f801-2c95-45ca-88a8-f3e66f74785a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_HughesSystiqueCorporationMember_dfacd31f-b0fd-46f5-ac6b-8d4cb4fb37d9" xlink:href="sats-20220630.xsd#sats_HughesSystiqueCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_f3c0f801-2c95-45ca-88a8-f3e66f74785a" xlink:to="loc_sats_HughesSystiqueCorporationMember_dfacd31f-b0fd-46f5-ac6b-8d4cb4fb37d9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_TerreStarSolutionsInc.Member_d5c7477e-d942-43f3-9a07-7d0059bb7e21" xlink:href="sats-20220630.xsd#sats_TerreStarSolutionsInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_f3c0f801-2c95-45ca-88a8-f3e66f74785a" xlink:to="loc_sats_TerreStarSolutionsInc.Member_d5c7477e-d942-43f3-9a07-7d0059bb7e21" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/ContingenciesNarrativeDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#ContingenciesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/ContingenciesNarrativeDetails" xlink:type="extended" id="i9272fea1570545de995d29a291112118_ContingenciesNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesLineItems_72c14624-d2de-4b68-960c-a9b431b2ba40" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingenciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_LossContingencyPaymentScheduleTerm_cc8689ce-cb3e-4efa-88a3-4788adf80409" xlink:href="sats-20220630.xsd#sats_LossContingencyPaymentScheduleTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_72c14624-d2de-4b68-960c-a9b431b2ba40" xlink:to="loc_sats_LossContingencyPaymentScheduleTerm_cc8689ce-cb3e-4efa-88a3-4788adf80409" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesTable_10f8eb66-865f-4da7-b8c2-6a1fb7f509f4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingenciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems_72c14624-d2de-4b68-960c-a9b431b2ba40" xlink:to="loc_us-gaap_LossContingenciesTable_10f8eb66-865f-4da7-b8c2-6a1fb7f509f4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseAxis_08c9c59e-b680-4da1-ae37-e501bf793817" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_LitigationCaseAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_10f8eb66-865f-4da7-b8c2-6a1fb7f509f4" xlink:to="loc_srt_LitigationCaseAxis_08c9c59e-b680-4da1-ae37-e501bf793817" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_08c9c59e-b680-4da1-ae37-e501bf793817_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_LitigationCaseAxis_08c9c59e-b680-4da1-ae37-e501bf793817" xlink:to="loc_srt_LitigationCaseTypeDomain_08c9c59e-b680-4da1-ae37-e501bf793817_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_144fd043-b955-4f53-a9c1-9535a698c2bf" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_LitigationCaseAxis_08c9c59e-b680-4da1-ae37-e501bf793817" xlink:to="loc_srt_LitigationCaseTypeDomain_144fd043-b955-4f53-a9c1-9535a698c2bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_LicenseFeeDisputeMember_a2fc471d-b399-42c1-bf6f-7388ba07a95c" xlink:href="sats-20220630.xsd#sats_LicenseFeeDisputeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_144fd043-b955-4f53-a9c1-9535a698c2bf" xlink:to="loc_sats_LicenseFeeDisputeMember_a2fc471d-b399-42c1-bf6f-7388ba07a95c" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/ContingenciesAccrualForLicenseFeeDisputeDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#ContingenciesAccrualForLicenseFeeDisputeDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/ContingenciesAccrualForLicenseFeeDisputeDetails" xlink:type="extended" id="ie13451ed628f472994c9f6b4b9fca80f_ContingenciesAccrualForLicenseFeeDisputeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesLineItems_d4fc261d-e15f-4fcc-a1bb-9bca31053623" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingenciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualAtCarryingValue_46256e60-27c9-4108-9ffd-13c565705e07" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingencyAccrualAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_d4fc261d-e15f-4fcc-a1bb-9bca31053623" xlink:to="loc_us-gaap_LossContingencyAccrualAtCarryingValue_46256e60-27c9-4108-9ffd-13c565705e07" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualPayments_567263de-a9c1-4dda-b950-257ea862cd62" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingencyAccrualPayments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_d4fc261d-e15f-4fcc-a1bb-9bca31053623" xlink:to="loc_us-gaap_LossContingencyAccrualPayments_567263de-a9c1-4dda-b950-257ea862cd62" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesTable_bd746f37-84d9-46fa-87d7-0d355638c398" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingenciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems_d4fc261d-e15f-4fcc-a1bb-9bca31053623" xlink:to="loc_us-gaap_LossContingenciesTable_bd746f37-84d9-46fa-87d7-0d355638c398" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseAxis_da5820c6-00aa-48ca-9fce-2f498be5fbb7" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_LitigationCaseAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_bd746f37-84d9-46fa-87d7-0d355638c398" xlink:to="loc_srt_LitigationCaseAxis_da5820c6-00aa-48ca-9fce-2f498be5fbb7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_da5820c6-00aa-48ca-9fce-2f498be5fbb7_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_LitigationCaseAxis_da5820c6-00aa-48ca-9fce-2f498be5fbb7" xlink:to="loc_srt_LitigationCaseTypeDomain_da5820c6-00aa-48ca-9fce-2f498be5fbb7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_8f8f750d-c2d1-48a1-a439-c0337995d7c8" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_LitigationCaseAxis_da5820c6-00aa-48ca-9fce-2f498be5fbb7" xlink:to="loc_srt_LitigationCaseTypeDomain_8f8f750d-c2d1-48a1-a439-c0337995d7c8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_LicenseFeeDisputeMember_e36b039c-fd89-4238-8f96-9f23aa6e6adc" xlink:href="sats-20220630.xsd#sats_LicenseFeeDisputeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_8f8f750d-c2d1-48a1-a439-c0337995d7c8" xlink:to="loc_sats_LicenseFeeDisputeMember_e36b039c-fd89-4238-8f96-9f23aa6e6adc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_8000a4c5-dc88-4593-a112-2cc46e8f1649" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_bd746f37-84d9-46fa-87d7-0d355638c398" xlink:to="loc_dei_LegalEntityAxis_8000a4c5-dc88-4593-a112-2cc46e8f1649" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8000a4c5-dc88-4593-a112-2cc46e8f1649_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_8000a4c5-dc88-4593-a112-2cc46e8f1649" xlink:to="loc_dei_EntityDomain_8000a4c5-dc88-4593-a112-2cc46e8f1649_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f9602a38-c12c-4b40-bb86-32e69e36920b" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_8000a4c5-dc88-4593-a112-2cc46e8f1649" xlink:to="loc_dei_EntityDomain_f9602a38-c12c-4b40-bb86-32e69e36920b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_HughesNetworkSystemsMember_de246447-9fce-4b4b-8127-9fd8d9ab1058" xlink:href="sats-20220630.xsd#sats_HughesNetworkSystemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_f9602a38-c12c-4b40-bb86-32e69e36920b" xlink:to="loc_sats_HughesNetworkSystemsMember_de246447-9fce-4b4b-8127-9fd8d9ab1058" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_ccedd805-0a9f-4add-8f9a-5ee83be761b6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_bd746f37-84d9-46fa-87d7-0d355638c398" xlink:to="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_ccedd805-0a9f-4add-8f9a-5ee83be761b6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_ccedd805-0a9f-4add-8f9a-5ee83be761b6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_ccedd805-0a9f-4add-8f9a-5ee83be761b6" xlink:to="loc_us-gaap_LossContingencyNatureDomain_ccedd805-0a9f-4add-8f9a-5ee83be761b6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_d75f6d92-b408-49f0-b5bf-f51bfdeed4d5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_ccedd805-0a9f-4add-8f9a-5ee83be761b6" xlink:to="loc_us-gaap_LossContingencyNatureDomain_d75f6d92-b408-49f0-b5bf-f51bfdeed4d5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_AdditionalLicenseFeesMember_2d269439-6fd7-44e3-84ba-b4c9043c9d31" xlink:href="sats-20220630.xsd#sats_AdditionalLicenseFeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_d75f6d92-b408-49f0-b5bf-f51bfdeed4d5" xlink:to="loc_sats_AdditionalLicenseFeesMember_2d269439-6fd7-44e3-84ba-b4c9043c9d31" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_PenaltiesMember_149fadef-64ff-4d2e-a0f9-3dd91dcb2a87" xlink:href="sats-20220630.xsd#sats_PenaltiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_d75f6d92-b408-49f0-b5bf-f51bfdeed4d5" xlink:to="loc_sats_PenaltiesMember_149fadef-64ff-4d2e-a0f9-3dd91dcb2a87" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_InterestandInterestonPenaltiesMember_62fc8621-6e15-4be9-b8fd-9c1baa5da6d1" xlink:href="sats-20220630.xsd#sats_InterestandInterestonPenaltiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_d75f6d92-b408-49f0-b5bf-f51bfdeed4d5" xlink:to="loc_sats_InterestandInterestonPenaltiesMember_62fc8621-6e15-4be9-b8fd-9c1baa5da6d1" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/SegmentReportingRevenueCapitalExpendituresandEBITDADetails" xlink:type="simple" xlink:href="sats-20220630.xsd#SegmentReportingRevenueCapitalExpendituresandEBITDADetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/SegmentReportingRevenueCapitalExpendituresandEBITDADetails" xlink:type="extended" id="i4fe27e7c8e804d038dc00e6a049eb655_SegmentReportingRevenueCapitalExpendituresandEBITDADetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_ccb7353c-6e42-4cae-957a-5d9f2e6a5ec8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_5f8d323d-fec3-4070-92da-b3b9d12fc195" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_ccb7353c-6e42-4cae-957a-5d9f2e6a5ec8" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_5f8d323d-fec3-4070-92da-b3b9d12fc195" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_CapitalExpendituresNetOfRefundsAndOtherReceiptsRelatedToCapitalExpenditures_cc1daa02-29a8-473c-97ca-0ed6e61e0155" xlink:href="sats-20220630.xsd#sats_CapitalExpendituresNetOfRefundsAndOtherReceiptsRelatedToCapitalExpenditures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_ccb7353c-6e42-4cae-957a-5d9f2e6a5ec8" xlink:to="loc_sats_CapitalExpendituresNetOfRefundsAndOtherReceiptsRelatedToCapitalExpenditures_cc1daa02-29a8-473c-97ca-0ed6e61e0155" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_EarningsBeforeInterestTaxDepreciationAndAmortization_b43e62ea-b333-47ad-a90b-3c20a5d64f73" xlink:href="sats-20220630.xsd#sats_EarningsBeforeInterestTaxDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_ccb7353c-6e42-4cae-957a-5d9f2e6a5ec8" xlink:to="loc_sats_EarningsBeforeInterestTaxDepreciationAndAmortization_b43e62ea-b333-47ad-a90b-3c20a5d64f73" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_013987f8-9ca9-4b06-8452-9f110dfd8220" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_ccb7353c-6e42-4cae-957a-5d9f2e6a5ec8" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_013987f8-9ca9-4b06-8452-9f110dfd8220" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeNet_32c80aa8-bfcd-4a6f-9c3e-9bfa323d41cc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InvestmentIncomeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_ccb7353c-6e42-4cae-957a-5d9f2e6a5ec8" xlink:to="loc_us-gaap_InvestmentIncomeNet_32c80aa8-bfcd-4a6f-9c3e-9bfa323d41cc" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_0ab858b0-01f0-408a-862c-5cc5d65ab6be" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_ccb7353c-6e42-4cae-957a-5d9f2e6a5ec8" xlink:to="loc_us-gaap_InterestExpense_0ab858b0-01f0-408a-862c-5cc5d65ab6be" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_93d15961-fb09-4f52-9086-474975cf9888" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_ccb7353c-6e42-4cae-957a-5d9f2e6a5ec8" xlink:to="loc_us-gaap_DepreciationAndAmortization_93d15961-fb09-4f52-9086-474975cf9888" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossAttributableToNoncontrollingInterest_c7f06906-a75e-4cc2-9164-1e0f304ba832" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeLossAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_ccb7353c-6e42-4cae-957a-5d9f2e6a5ec8" xlink:to="loc_us-gaap_IncomeLossAttributableToNoncontrollingInterest_c7f06906-a75e-4cc2-9164-1e0f304ba832" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_0f3bc1ac-626c-4af0-95cf-98c9cf4a0a08" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_ccb7353c-6e42-4cae-957a-5d9f2e6a5ec8" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_0f3bc1ac-626c-4af0-95cf-98c9cf4a0a08" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_f3909308-a909-4327-862b-5a06261d122f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_0f3bc1ac-626c-4af0-95cf-98c9cf4a0a08" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_f3909308-a909-4327-862b-5a06261d122f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_f3909308-a909-4327-862b-5a06261d122f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_f3909308-a909-4327-862b-5a06261d122f" xlink:to="loc_us-gaap_SegmentDomain_f3909308-a909-4327-862b-5a06261d122f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_c24d31eb-f485-4768-8009-baf5b2c86b6f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_f3909308-a909-4327-862b-5a06261d122f" xlink:to="loc_us-gaap_SegmentDomain_c24d31eb-f485-4768-8009-baf5b2c86b6f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_HughesBusinessSegmentMember_90519e98-2d0d-421e-822d-aead69b2cd26" xlink:href="sats-20220630.xsd#sats_HughesBusinessSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_c24d31eb-f485-4768-8009-baf5b2c86b6f" xlink:to="loc_sats_HughesBusinessSegmentMember_90519e98-2d0d-421e-822d-aead69b2cd26" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_EchoStarSatelliteServicesBusinessMember_b9824e88-841f-40cc-b8fe-ec517007208e" xlink:href="sats-20220630.xsd#sats_EchoStarSatelliteServicesBusinessMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_c24d31eb-f485-4768-8009-baf5b2c86b6f" xlink:to="loc_sats_EchoStarSatelliteServicesBusinessMember_b9824e88-841f-40cc-b8fe-ec517007208e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_f68c6592-02e8-487c-b4e1-1bd3f861948a" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_0f3bc1ac-626c-4af0-95cf-98c9cf4a0a08" xlink:to="loc_srt_ConsolidationItemsAxis_f68c6592-02e8-487c-b4e1-1bd3f861948a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_f68c6592-02e8-487c-b4e1-1bd3f861948a_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_f68c6592-02e8-487c-b4e1-1bd3f861948a" xlink:to="loc_srt_ConsolidationItemsDomain_f68c6592-02e8-487c-b4e1-1bd3f861948a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_9a0d0f65-6788-44f1-837a-6a2b97ae9b40" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_f68c6592-02e8-487c-b4e1-1bd3f861948a" xlink:to="loc_srt_ConsolidationItemsDomain_9a0d0f65-6788-44f1-837a-6a2b97ae9b40" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_CorporateAndEliminationsMember_dbde3eae-deea-49c1-826f-20a55ba7ea73" xlink:href="sats-20220630.xsd#sats_CorporateAndEliminationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_9a0d0f65-6788-44f1-837a-6a2b97ae9b40" xlink:to="loc_sats_CorporateAndEliminationsMember_dbde3eae-deea-49c1-826f-20a55ba7ea73" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntersegmentEliminationMember_1447076a-f440-4899-8ee3-7812e69d7c8a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IntersegmentEliminationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_9a0d0f65-6788-44f1-837a-6a2b97ae9b40" xlink:to="loc_us-gaap_IntersegmentEliminationMember_1447076a-f440-4899-8ee3-7812e69d7c8a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_492f0199-ac4f-42d8-93cc-671c208a762e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_9a0d0f65-6788-44f1-837a-6a2b97ae9b40" xlink:to="loc_us-gaap_OperatingSegmentsMember_492f0199-ac4f-42d8-93cc-671c208a762e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateNonSegmentMember_6d2044d9-66f1-47e4-8d82-56e6ab838e27" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CorporateNonSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_9a0d0f65-6788-44f1-837a-6a2b97ae9b40" xlink:to="loc_us-gaap_CorporateNonSegmentMember_6d2044d9-66f1-47e4-8d82-56e6ab838e27" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.echostar.com/role/SupplementalFinancialInformationScheduleofNoncashInvestingandFinancingActivitiesDetails" xlink:type="simple" xlink:href="sats-20220630.xsd#SupplementalFinancialInformationScheduleofNoncashInvestingandFinancingActivitiesDetails"/>
  <link:definitionLink xlink:role="http://www.echostar.com/role/SupplementalFinancialInformationScheduleofNoncashInvestingandFinancingActivitiesDetails" xlink:type="extended" id="ifc3b285e52a44f159684045e1574baea_SupplementalFinancialInformationScheduleofNoncashInvestingandFinancingActivitiesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_c8f38e98-87b1-43d2-9627-88b53e4e7d6e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplementalCashFlowInformationAbstract_358b78cd-b81f-4b64-b417-cbb09242043a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SupplementalCashFlowInformationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_c8f38e98-87b1-43d2-9627-88b53e4e7d6e" xlink:to="loc_us-gaap_SupplementalCashFlowInformationAbstract_358b78cd-b81f-4b64-b417-cbb09242043a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPaidNet_81fba036-9c3f-4939-8608-79517f75726e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestPaidNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract_358b78cd-b81f-4b64-b417-cbb09242043a" xlink:to="loc_us-gaap_InterestPaidNet_81fba036-9c3f-4939-8608-79517f75726e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesPaid_158d2957-f4bd-4ced-936b-8c3b7c29b549" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxesPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract_358b78cd-b81f-4b64-b417-cbb09242043a" xlink:to="loc_us-gaap_IncomeTaxesPaid_158d2957-f4bd-4ced-936b-8c3b7c29b549" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncashInvestingAndFinancingItemsAbstract_44ea1863-3dc2-4118-a075-ab45d20f6991" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NoncashInvestingAndFinancingItemsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_c8f38e98-87b1-43d2-9627-88b53e4e7d6e" xlink:to="loc_us-gaap_NoncashInvestingAndFinancingItemsAbstract_44ea1863-3dc2-4118-a075-ab45d20f6991" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueEmployeeBenefitPlan_1bc55317-72da-4786-bd04-27c0a836b0fa" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodValueEmployeeBenefitPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoncashInvestingAndFinancingItemsAbstract_44ea1863-3dc2-4118-a075-ab45d20f6991" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueEmployeeBenefitPlan_1bc55317-72da-4786-bd04-27c0a836b0fa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sats_IncreaseDecreaseInCapitalExpendituresIncurredButNotYetPaid_eb39e3e3-2a42-4acd-b3c6-97463f429f2d" xlink:href="sats-20220630.xsd#sats_IncreaseDecreaseInCapitalExpendituresIncurredButNotYetPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoncashInvestingAndFinancingItemsAbstract_44ea1863-3dc2-4118-a075-ab45d20f6991" xlink:to="loc_sats_IncreaseDecreaseInCapitalExpendituresIncurredButNotYetPaid_eb39e3e3-2a42-4acd-b3c6-97463f429f2d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncashOrPartNoncashDivestitureAmountOfConsiderationReceived1_3e829674-c1b5-45c0-8423-387e0efecebb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NoncashOrPartNoncashDivestitureAmountOfConsiderationReceived1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoncashInvestingAndFinancingItemsAbstract_44ea1863-3dc2-4118-a075-ab45d20f6991" xlink:to="loc_us-gaap_NoncashOrPartNoncashDivestitureAmountOfConsiderationReceived1_3e829674-c1b5-45c0-8423-387e0efecebb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_9cb3f09d-0f53-4dd3-8131-ba3ee2ea1647" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_c8f38e98-87b1-43d2-9627-88b53e4e7d6e" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_9cb3f09d-0f53-4dd3-8131-ba3ee2ea1647" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_460db1d3-8c4d-4ed8-8493-34456ec3f74e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_9cb3f09d-0f53-4dd3-8131-ba3ee2ea1647" xlink:to="loc_us-gaap_StatementClassOfStockAxis_460db1d3-8c4d-4ed8-8493-34456ec3f74e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_460db1d3-8c4d-4ed8-8493-34456ec3f74e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_460db1d3-8c4d-4ed8-8493-34456ec3f74e" xlink:to="loc_us-gaap_ClassOfStockDomain_460db1d3-8c4d-4ed8-8493-34456ec3f74e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_76cfda5d-ce50-4c3b-a8a3-19b7d6e81a8e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_460db1d3-8c4d-4ed8-8493-34456ec3f74e" xlink:to="loc_us-gaap_ClassOfStockDomain_76cfda5d-ce50-4c3b-a8a3-19b7d6e81a8e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_7d01c376-ba0e-4ca5-a82f-fc94536b4d92" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_76cfda5d-ce50-4c3b-a8a3-19b7d6e81a8e" xlink:to="loc_us-gaap_CommonClassAMember_7d01c376-ba0e-4ca5-a82f-fc94536b4d92" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists" xlink:type="simple" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-roles-2022.xsd#eedm"/>
  <link:definitionLink xlink:role="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesCurrentAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndOtherAccruedLiabilitiesCurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsPayableAndOtherAccruedLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract" xlink:to="loc_us-gaap_AccountsPayableAndOtherAccruedLiabilitiesCurrent" xlink:type="arc" order="0"/>
  </link:definitionLink>
</link:linkbase>
