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

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2021 Workiva-->
<!--r:b233b413-fc25-429b-a50e-761509d2e188,g:dc6ce899-739d-4402-8d92-367ecc8460ce-->
<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:arcroleRef arcroleURI="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/arcrole/esma-arcrole-2018-11-21.xsd#wider-narrower"/>
  <link:roleRef roleURI="http://www.telefonica.com/role/TagsthatmustbeappliedifcorrespondinginformationispresentinareportStatement" xlink:type="simple" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#TagsthatmustbeappliedifcorrespondinginformationispresentinareportStatement"/>
  <link:definitionLink xlink:role="http://www.telefonica.com/role/TagsthatmustbeappliedifcorrespondinginformationispresentinareportStatement" xlink:type="extended" id="ibc43b5a2807e48f8a4f749d1f782d56a_TagsthatmustbeappliedifcorrespondinginformationispresentinareportStatement"/>
  <link:roleRef roleURI="http://www.telefonica.com/role/Estadosdesituacinfinancieraconsolidadosal31dediciembre" xlink:type="simple" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#Estadosdesituacinfinancieraconsolidadosal31dediciembre"/>
  <link:definitionLink xlink:role="http://www.telefonica.com/role/Estadosdesituacinfinancieraconsolidadosal31dediciembre" xlink:type="extended" id="i531e069b01a347e6866f197c9d0d837a_Estadosdesituacinfinancieraconsolidadosal31dediciembre"/>
  <link:roleRef roleURI="http://www.telefonica.com/role/Cuentasderesultadosconsolidadasdelosejerciciosanualesterminadosel31dediciembre" xlink:type="simple" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#Cuentasderesultadosconsolidadasdelosejerciciosanualesterminadosel31dediciembre"/>
  <link:definitionLink xlink:role="http://www.telefonica.com/role/Cuentasderesultadosconsolidadasdelosejerciciosanualesterminadosel31dediciembre" xlink:type="extended" id="ifcce697b328d4edcbc5b987c8199a698_Cuentasderesultadosconsolidadasdelosejerciciosanualesterminadosel31dediciembre"/>
  <link:roleRef roleURI="http://www.telefonica.com/role/Estadosderesultadosglobalesconsolidadosdelosejerciciosanualesterminadosel31dediciembre" xlink:type="simple" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#Estadosderesultadosglobalesconsolidadosdelosejerciciosanualesterminadosel31dediciembre"/>
  <link:definitionLink xlink:role="http://www.telefonica.com/role/Estadosderesultadosglobalesconsolidadosdelosejerciciosanualesterminadosel31dediciembre" xlink:type="extended" id="i19ca31addf0548028abbc0ab9abc9a28_Estadosderesultadosglobalesconsolidadosdelosejerciciosanualesterminadosel31dediciembre"/>
  <link:roleRef roleURI="http://www.telefonica.com/role/Estadosdecambiosenelpatrimonionetoconsolidadodelosejerciciosanualesterminadosel31dediciembre" xlink:type="simple" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#Estadosdecambiosenelpatrimonionetoconsolidadodelosejerciciosanualesterminadosel31dediciembre"/>
  <link:definitionLink xlink:role="http://www.telefonica.com/role/Estadosdecambiosenelpatrimonionetoconsolidadodelosejerciciosanualesterminadosel31dediciembre" xlink:type="extended" id="ieea201bf4eb847db839a0da03c836fba_Estadosdecambiosenelpatrimonionetoconsolidadodelosejerciciosanualesterminadosel31dediciembre">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_StatementOfChangesInEquityLineItems_f0b0f705-ceee-4257-878a-06971ab109fc" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_StatementOfChangesInEquityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Equity_75a85b19-db41-47f3-85bd-7e045b70d0f3" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Equity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_f0b0f705-ceee-4257-878a-06971ab109fc" xlink:to="loc_ifrs-full_Equity_75a85b19-db41-47f3-85bd-7e045b70d0f3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_CambioDePoliticaContable_f5b9dee2-a2c0-4e01-99c8-6a7e33425f8b" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_CambioDePoliticaContable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_f0b0f705-ceee-4257-878a-06971ab109fc" xlink:to="loc_tef_CambioDePoliticaContable_f5b9dee2-a2c0-4e01-99c8-6a7e33425f8b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_AjusteEnLaAplicacionInicialDeNuevasNormasContables_01f3e9bd-6bac-4fc3-a387-4da6005c9ab4" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_AjusteEnLaAplicacionInicialDeNuevasNormasContables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_f0b0f705-ceee-4257-878a-06971ab109fc" xlink:to="loc_tef_AjusteEnLaAplicacionInicialDeNuevasNormasContables_01f3e9bd-6bac-4fc3-a387-4da6005c9ab4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_CambioContableEImpactoDeLaHiperinflacion_af7c0648-b796-4be0-8338-a3816156d4ce" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_CambioContableEImpactoDeLaHiperinflacion"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_f0b0f705-ceee-4257-878a-06971ab109fc" xlink:to="loc_tef_CambioContableEImpactoDeLaHiperinflacion_af7c0648-b796-4be0-8338-a3816156d4ce" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLoss_8627dc25-a1cd-4668-8610-b8b38b621067" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_f0b0f705-ceee-4257-878a-06971ab109fc" xlink:to="loc_ifrs-full_ProfitLoss_8627dc25-a1cd-4668-8610-b8b38b621067" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncome_0dce2779-32ee-4ccc-b60c-a4dcf5128bae" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherComprehensiveIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_f0b0f705-ceee-4257-878a-06971ab109fc" xlink:to="loc_ifrs-full_OtherComprehensiveIncome_0dce2779-32ee-4ccc-b60c-a4dcf5128bae" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncome_6f51e0ff-f2b2-4d7c-a648-7f13156e904a" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ComprehensiveIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_f0b0f705-ceee-4257-878a-06971ab109fc" xlink:to="loc_ifrs-full_ComprehensiveIncome_6f51e0ff-f2b2-4d7c-a648-7f13156e904a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DividendsPaid_b66e34bc-2ffa-432c-895e-854f4e5a5076" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DividendsPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_f0b0f705-ceee-4257-878a-06971ab109fc" xlink:to="loc_ifrs-full_DividendsPaid_b66e34bc-2ffa-432c-895e-854f4e5a5076" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions_401f20b2-7076-4480-ad67-0f345312a7bf" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_f0b0f705-ceee-4257-878a-06971ab109fc" xlink:to="loc_ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions_401f20b2-7076-4480-ad67-0f345312a7bf" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughChangeInEquityOfSubsidiaries_5656f7b5-c231-45e0-b8c7-6b8ef4332b33" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncreaseDecreaseThroughChangeInEquityOfSubsidiaries"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_f0b0f705-ceee-4257-878a-06971ab109fc" xlink:to="loc_ifrs-full_IncreaseDecreaseThroughChangeInEquityOfSubsidiaries_5656f7b5-c231-45e0-b8c7-6b8ef4332b33" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_AumentoDisminucionATravesDeValoresSubordinadosSinFecha_e5279df3-2bdc-4c70-a30f-e95c066c0013" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_AumentoDisminucionATravesDeValoresSubordinadosSinFecha"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_f0b0f705-ceee-4257-878a-06971ab109fc" xlink:to="loc_tef_AumentoDisminucionATravesDeValoresSubordinadosSinFecha_e5279df3-2bdc-4c70-a30f-e95c066c0013" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity_e2a2a54b-304c-43b8-9f06-a2b43930ed8c" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_f0b0f705-ceee-4257-878a-06971ab109fc" xlink:to="loc_ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity_e2a2a54b-304c-43b8-9f06-a2b43930ed8c" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Equity_43ba200a-af11-41ad-b9ed-37974e869bf5" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Equity"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_StatementOfChangesInEquityTable_3359b64e-d5a7-4346-a695-a51a4fe476b8" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_StatementOfChangesInEquityTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_f0b0f705-ceee-4257-878a-06971ab109fc" xlink:to="loc_ifrs-full_StatementOfChangesInEquityTable_3359b64e-d5a7-4346-a695-a51a4fe476b8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="scenario"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComponentsOfEquityAxis_da72caf8-f8ce-4547-93c7-8755d53c1281" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ComponentsOfEquityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_StatementOfChangesInEquityTable_3359b64e-d5a7-4346-a695-a51a4fe476b8" xlink:to="loc_ifrs-full_ComponentsOfEquityAxis_da72caf8-f8ce-4547-93c7-8755d53c1281" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EquityMember_ce905a55-65ef-4319-b05c-624c94d587b5" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_EquityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ComponentsOfEquityAxis_da72caf8-f8ce-4547-93c7-8755d53c1281" xlink:to="loc_ifrs-full_EquityMember_ce905a55-65ef-4319-b05c-624c94d587b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EquityAttributableToOwnersOfParentMember_7bd00bf5-d4e3-4015-b432-26285e28b015" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_EquityAttributableToOwnersOfParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EquityMember_ce905a55-65ef-4319-b05c-624c94d587b5" xlink:to="loc_ifrs-full_EquityAttributableToOwnersOfParentMember_7bd00bf5-d4e3-4015-b432-26285e28b015" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IssuedCapitalMember_b678a545-8f82-41e5-bfb0-a4ed347aa31d" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IssuedCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParentMember_7bd00bf5-d4e3-4015-b432-26285e28b015" xlink:to="loc_ifrs-full_IssuedCapitalMember_b678a545-8f82-41e5-bfb0-a4ed347aa31d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SharePremiumMember_72a9bfc9-3e58-4295-81f5-48912f7a3baf" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_SharePremiumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParentMember_7bd00bf5-d4e3-4015-b432-26285e28b015" xlink:to="loc_ifrs-full_SharePremiumMember_72a9bfc9-3e58-4295-81f5-48912f7a3baf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TreasurySharesMember_e1a3f016-cf78-4fba-9a81-9f173fd9312c" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_TreasurySharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParentMember_7bd00bf5-d4e3-4015-b432-26285e28b015" xlink:to="loc_ifrs-full_TreasurySharesMember_e1a3f016-cf78-4fba-9a81-9f173fd9312c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherEquityInterestMember_275e7447-8264-4458-a78d-5a0ecfcd95cd" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherEquityInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParentMember_7bd00bf5-d4e3-4015-b432-26285e28b015" xlink:to="loc_ifrs-full_OtherEquityInterestMember_275e7447-8264-4458-a78d-5a0ecfcd95cd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_StatutoryReserveMember_14b336aa-e0bf-42d3-ae57-cf8c7a204a7e" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_StatutoryReserveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParentMember_7bd00bf5-d4e3-4015-b432-26285e28b015" xlink:to="loc_ifrs-full_StatutoryReserveMember_14b336aa-e0bf-42d3-ae57-cf8c7a204a7e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RetainedEarningsMember_9a4035b7-3708-4581-98e7-ccf39e918134" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParentMember_7bd00bf5-d4e3-4015-b432-26285e28b015" xlink:to="loc_ifrs-full_RetainedEarningsMember_9a4035b7-3708-4581-98e7-ccf39e918134" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReserveOfGainsAndLossesOnRemeasuringAvailableforsaleFinancialAssetsMember_d1c9e81b-68ab-4607-ba83-19fb64e5ea4a" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ReserveOfGainsAndLossesOnRemeasuringAvailableforsaleFinancialAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParentMember_7bd00bf5-d4e3-4015-b432-26285e28b015" xlink:to="loc_ifrs-full_ReserveOfGainsAndLossesOnRemeasuringAvailableforsaleFinancialAssetsMember_d1c9e81b-68ab-4607-ba83-19fb64e5ea4a" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReserveOfCashFlowHedgesMember_ae63c95c-76f2-43c7-b290-c04eaefa1eaf" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ReserveOfCashFlowHedgesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParentMember_7bd00bf5-d4e3-4015-b432-26285e28b015" xlink:to="loc_ifrs-full_ReserveOfCashFlowHedgesMember_ae63c95c-76f2-43c7-b290-c04eaefa1eaf" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReserveOfGainsAndLossesFromInvestmentsInEquityInstrumentsMember_82d5b033-043c-4439-94ba-e2e3d3b1e0b9" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ReserveOfGainsAndLossesFromInvestmentsInEquityInstrumentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParentMember_7bd00bf5-d4e3-4015-b432-26285e28b015" xlink:to="loc_ifrs-full_ReserveOfGainsAndLossesFromInvestmentsInEquityInstrumentsMember_82d5b033-043c-4439-94ba-e2e3d3b1e0b9" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember_2e1570d7-075b-488b-82fd-b768fa57be43" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParentMember_7bd00bf5-d4e3-4015-b432-26285e28b015" xlink:to="loc_ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember_2e1570d7-075b-488b-82fd-b768fa57be43" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncontrollingInterestsMember_f4bfc23e-fea2-47cb-83ff-07c20380933a" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncontrollingInterestsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EquityMember_ce905a55-65ef-4319-b05c-624c94d587b5" xlink:to="loc_ifrs-full_NoncontrollingInterestsMember_f4bfc23e-fea2-47cb-83ff-07c20380933a" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.telefonica.com/role/Estadosdeflujosdeefectivoconsolidadosdelosejerciciosanualesterminadosel31dediciembre" xlink:type="simple" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#Estadosdeflujosdeefectivoconsolidadosdelosejerciciosanualesterminadosel31dediciembre"/>
  <link:definitionLink xlink:role="http://www.telefonica.com/role/Estadosdeflujosdeefectivoconsolidadosdelosejerciciosanualesterminadosel31dediciembre" xlink:type="extended" id="i276026655c174434a4db7a71d38bea80_Estadosdeflujosdeefectivoconsolidadosdelosejerciciosanualesterminadosel31dediciembre"/>
  <link:roleRef roleURI="http://www.esma.europa.eu/xbrl/role/cor/esef_role-999999" xlink:type="simple" xlink:href="http://www.esma.europa.eu/taxonomy/2020-03-16/esef_cor.xsd#esef_role-999999"/>
  <link:definitionLink xlink:role="http://www.esma.europa.eu/xbrl/role/cor/esef_role-999999" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:href="http://www.esma.europa.eu/taxonomy/2020-03-16/esef_cor.xsd#esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification_a427568b-91c7-494d-87cb-141d63d14912NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification_a427568b-91c7-494d-87cb-141d63d14912NotDimensionallyQualified" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DomicileOfEntity_81aadb8a-a10b-4b4b-95a5-66394ad25d59NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DomicileOfEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DomicileOfEntity_81aadb8a-a10b-4b4b-95a5-66394ad25d59NotDimensionallyQualified" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LegalFormOfEntity_3454106a-e14a-4745-9d44-570f7bd42430NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_LegalFormOfEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_LegalFormOfEntity_3454106a-e14a-4745-9d44-570f7bd42430NotDimensionallyQualified" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CountryOfIncorporation_0ec907a1-5ddb-410c-986b-dea8aac8b56eNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CountryOfIncorporation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CountryOfIncorporation_0ec907a1-5ddb-410c-986b-dea8aac8b56eNotDimensionallyQualified" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AddressOfRegisteredOfficeOfEntity_f0311163-f00a-4fcd-8e8e-1a07be5d952aNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AddressOfRegisteredOfficeOfEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_AddressOfRegisteredOfficeOfEntity_f0311163-f00a-4fcd-8e8e-1a07be5d952aNotDimensionallyQualified" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PrincipalPlaceOfBusiness_2c957e27-c809-41ac-aa86-3dc377008b5dNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PrincipalPlaceOfBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_PrincipalPlaceOfBusiness_2c957e27-c809-41ac-aa86-3dc377008b5dNotDimensionallyQualified" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities_803f297e-0f14-4a38-9266-e7de947ce79fNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities_803f297e-0f14-4a38-9266-e7de947ce79fNotDimensionallyQualified" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NameOfParentEntity_f7415adc-f076-409f-8c28-a7a1b22975d0NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NameOfParentEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_NameOfParentEntity_f7415adc-f076-409f-8c28-a7a1b22975d0NotDimensionallyQualified" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NameOfUltimateParentOfGroup_3a89aa4b-e225-4c10-b299-1b5a26bef0ddNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NameOfUltimateParentOfGroup"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_NameOfUltimateParentOfGroup_3a89aa4b-e225-4c10-b299-1b5a26bef0ddNotDimensionallyQualified" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentAssets_6b14a732-5d69-43de-b11d-fb01bdc5dcdfNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_NoncurrentAssets_6b14a732-5d69-43de-b11d-fb01bdc5dcdfNotDimensionallyQualified" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IntangibleAssetsOtherThanGoodwill_55d39c3c-57f6-4a12-b067-95db9a886773NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IntangibleAssetsOtherThanGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_IntangibleAssetsOtherThanGoodwill_55d39c3c-57f6-4a12-b067-95db9a886773NotDimensionallyQualified" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Goodwill_195a4d5c-fed0-4f61-952c-d4e7cb0667feNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_Goodwill_195a4d5c-fed0-4f61-952c-d4e7cb0667feNotDimensionallyQualified" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PropertyPlantAndEquipment_e366b1d2-add8-4d86-9669-f63d0404c5f6NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_PropertyPlantAndEquipment_e366b1d2-add8-4d86-9669-f63d0404c5f6NotDimensionallyQualified" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RightofuseAssets_769495b3-5389-4e87-8732-7eb3dca4a3ccNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_RightofuseAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_RightofuseAssets_769495b3-5389-4e87-8732-7eb3dca4a3ccNotDimensionallyQualified" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InvestmentAccountedForUsingEquityMethod_cb7e2b62-a8f6-4c84-b968-f72ba13eaaa0NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_InvestmentAccountedForUsingEquityMethod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_InvestmentAccountedForUsingEquityMethod_cb7e2b62-a8f6-4c84-b968-f72ba13eaaa0NotDimensionallyQualified" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_ActivosFinancierosYOtrosActivosNoCorrientes_fb1a5385-c58c-459d-87c3-a78691cc588eNotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_ActivosFinancierosYOtrosActivosNoCorrientes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_ActivosFinancierosYOtrosActivosNoCorrientes_fb1a5385-c58c-459d-87c3-a78691cc588eNotDimensionallyQualified" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DeferredTaxAssets_74983b13-d316-4022-97b0-9d0830ea5061NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DeferredTaxAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DeferredTaxAssets_74983b13-d316-4022-97b0-9d0830ea5061NotDimensionallyQualified" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentAssets_92429ad7-30f0-4834-abf7-df1f92092451NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CurrentAssets_92429ad7-30f0-4834-abf7-df1f92092451NotDimensionallyQualified" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Inventories_862cb41c-11f5-494e-b213-aa88c8d68898NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Inventories"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_Inventories_862cb41c-11f5-494e-b213-aa88c8d68898NotDimensionallyQualified" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_CuentasPorCobrarYOtrosActivosCorrientes_b9ec769a-695e-40da-88dd-c782033e6255NotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_CuentasPorCobrarYOtrosActivosCorrientes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_CuentasPorCobrarYOtrosActivosCorrientes_b9ec769a-695e-40da-88dd-c782033e6255NotDimensionallyQualified" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentTaxAssetsCurrent_5020035d-6ca3-4554-85ea-cd7d62f6450aNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentTaxAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CurrentTaxAssetsCurrent_5020035d-6ca3-4554-85ea-cd7d62f6450aNotDimensionallyQualified" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentFinancialAssets_3ae1da01-0a41-4e78-8ef8-a973da513e81NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentFinancialAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CurrentFinancialAssets_3ae1da01-0a41-4e78-8ef8-a973da513e81NotDimensionallyQualified" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashAndCashEquivalents_69658646-3a38-4d2f-8f71-2cde34b24851NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashAndCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CashAndCashEquivalents_69658646-3a38-4d2f-8f71-2cde34b24851NotDimensionallyQualified" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwners_b6f0f18f-48e1-45b3-9618-2da79480b0feNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwners"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwners_b6f0f18f-48e1-45b3-9618-2da79480b0feNotDimensionallyQualified" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Assets_8e30323d-41ad-4fa8-9731-fff24dca2ffbNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_Assets_8e30323d-41ad-4fa8-9731-fff24dca2ffbNotDimensionallyQualified" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Equity_2d9821f9-0bbb-454a-b05e-da7137244220NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Equity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_Equity_2d9821f9-0bbb-454a-b05e-da7137244220NotDimensionallyQualified" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EquityAttributableToOwnersOfParent_33954894-e608-4229-91c1-ff800d2a3628NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_EquityAttributableToOwnersOfParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_EquityAttributableToOwnersOfParent_33954894-e608-4229-91c1-ff800d2a3628NotDimensionallyQualified" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncontrollingInterests_73dcb71c-ff32-4c96-a2ed-3ac62c7183a9NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncontrollingInterests"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_NoncontrollingInterests_73dcb71c-ff32-4c96-a2ed-3ac62c7183a9NotDimensionallyQualified" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentLiabilities_0533fb61-80a1-4210-a526-ee32a66748c1NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_NoncurrentLiabilities_0533fb61-80a1-4210-a526-ee32a66748c1NotDimensionallyQualified" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentFinancialLiabilities_dfc6047a-39f7-42ba-a4d8-d25b778cd86bNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_NoncurrentFinancialLiabilities_dfc6047a-39f7-42ba-a4d8-d25b778cd86bNotDimensionallyQualified" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentLeaseLiabilities_90fd07e6-e4ec-4254-87f4-71a3129e3606NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentLeaseLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_NoncurrentLeaseLiabilities_90fd07e6-e4ec-4254-87f4-71a3129e3606NotDimensionallyQualified" xlink:type="arc" order="30"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_CuentasAPagarYOtrosPasivosNoCorrientes_70fa01ea-0afd-40f3-bf4d-26342b062a20NotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_CuentasAPagarYOtrosPasivosNoCorrientes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_CuentasAPagarYOtrosPasivosNoCorrientes_70fa01ea-0afd-40f3-bf4d-26342b062a20NotDimensionallyQualified" xlink:type="arc" order="31"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DeferredTaxLiabilities_996d494e-a061-405d-ab4c-903371f169c9NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DeferredTaxLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DeferredTaxLiabilities_996d494e-a061-405d-ab4c-903371f169c9NotDimensionallyQualified" xlink:type="arc" order="32"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentProvisions_5ac94dd3-aea0-45b3-93eb-55a19314b885NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentProvisions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_NoncurrentProvisions_5ac94dd3-aea0-45b3-93eb-55a19314b885NotDimensionallyQualified" xlink:type="arc" order="33"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentLiabilities_f64302fe-9646-45b8-995a-4c76f70154b3NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CurrentLiabilities_f64302fe-9646-45b8-995a-4c76f70154b3NotDimensionallyQualified" xlink:type="arc" order="34"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentFinancialLiabilities_8617e7fa-beee-4811-be47-92337442db41NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CurrentFinancialLiabilities_8617e7fa-beee-4811-be47-92337442db41NotDimensionallyQualified" xlink:type="arc" order="35"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentLeaseLiabilities_1bae01ba-bbf4-4ae7-9239-de9aa6881cd9NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentLeaseLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CurrentLeaseLiabilities_1bae01ba-bbf4-4ae7-9239-de9aa6881cd9NotDimensionallyQualified" xlink:type="arc" order="36"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_CuentasAPagarYOtrosPasivosCorrientes_6f32f74b-f565-48e1-bbc4-29b2b8dad6cbNotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_CuentasAPagarYOtrosPasivosCorrientes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_CuentasAPagarYOtrosPasivosCorrientes_6f32f74b-f565-48e1-bbc4-29b2b8dad6cbNotDimensionallyQualified" xlink:type="arc" order="37"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentTaxLiabilitiesCurrent_fa84f843-b0b4-438e-bcc7-479200689622NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentTaxLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CurrentTaxLiabilitiesCurrent_fa84f843-b0b4-438e-bcc7-479200689622NotDimensionallyQualified" xlink:type="arc" order="38"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentProvisions_e6c96a8a-ebba-426e-86d6-9e03107d8ab1NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentProvisions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CurrentProvisions_e6c96a8a-ebba-426e-86d6-9e03107d8ab1NotDimensionallyQualified" xlink:type="arc" order="39"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale_5ff12c85-3f5a-4940-877e-5095ff0dcbe3NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale_5ff12c85-3f5a-4940-877e-5095ff0dcbe3NotDimensionallyQualified" xlink:type="arc" order="40"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EquityAndLiabilities_df212cb9-5a97-43e8-9022-c9dbf0f3de23NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_EquityAndLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_EquityAndLiabilities_df212cb9-5a97-43e8-9022-c9dbf0f3de23NotDimensionallyQualified" xlink:type="arc" order="41"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Revenue_141acaea-50b2-49b9-9f9a-78bbdd32c406NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Revenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_Revenue_141acaea-50b2-49b9-9f9a-78bbdd32c406NotDimensionallyQualified" xlink:type="arc" order="42"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherIncome_c2067df8-4dca-4f17-9119-e5c0a6556f51NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_OtherIncome_c2067df8-4dca-4f17-9119-e5c0a6556f51NotDimensionallyQualified" xlink:type="arc" order="43"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RawMaterialsAndConsumablesUsed_b9b65703-7202-47fb-91b4-b83e5ccaf0cdNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_RawMaterialsAndConsumablesUsed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_RawMaterialsAndConsumablesUsed_b9b65703-7202-47fb-91b4-b83e5ccaf0cdNotDimensionallyQualified" xlink:type="arc" order="44"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EmployeeBenefitsExpense_5b2a26f2-d031-4387-9c0e-89e3d9fba5c1NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_EmployeeBenefitsExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_EmployeeBenefitsExpense_5b2a26f2-d031-4387-9c0e-89e3d9fba5c1NotDimensionallyQualified" xlink:type="arc" order="45"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherExpenseByNature_b17b8b3d-e8ff-48bb-add3-2dd76e3f645aNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherExpenseByNature"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_OtherExpenseByNature_b17b8b3d-e8ff-48bb-add3-2dd76e3f645aNotDimensionallyQualified" xlink:type="arc" order="46"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_GananciaPerdidaDeActividadesOperativasAntesDeDepreciacionYAmortizacion_9b245bb5-ad0b-41b5-8ddd-ac79a516e08fNotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_GananciaPerdidaDeActividadesOperativasAntesDeDepreciacionYAmortizacion"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_GananciaPerdidaDeActividadesOperativasAntesDeDepreciacionYAmortizacion_9b245bb5-ad0b-41b5-8ddd-ac79a516e08fNotDimensionallyQualified" xlink:type="arc" order="47"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DepreciationAndAmortisationExpense_2192bb3c-8b50-4320-a5f5-c7e67491efc2NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DepreciationAndAmortisationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DepreciationAndAmortisationExpense_2192bb3c-8b50-4320-a5f5-c7e67491efc2NotDimensionallyQualified" xlink:type="arc" order="48"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossFromOperatingActivities_5c3586c1-78ca-4527-aa4c-0ee83cddd3ffNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProfitLossFromOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_ProfitLossFromOperatingActivities_5c3586c1-78ca-4527-aa4c-0ee83cddd3ffNotDimensionallyQualified" xlink:type="arc" order="49"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod_44f1b387-e2cd-4bd3-8cb5-18e8c9e802acNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod_44f1b387-e2cd-4bd3-8cb5-18e8c9e802acNotDimensionallyQualified" xlink:type="arc" order="50"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinanceIncome_34ff69d0-a5e7-4d31-85d9-d03eca4e6f35NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_FinanceIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_FinanceIncome_34ff69d0-a5e7-4d31-85d9-d03eca4e6f35NotDimensionallyQualified" xlink:type="arc" order="51"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NetForeignExchangeGain_90e9a2d3-3750-4ab6-b1ea-f9ea5ed0878aNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NetForeignExchangeGain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_NetForeignExchangeGain_90e9a2d3-3750-4ab6-b1ea-f9ea5ed0878aNotDimensionallyQualified" xlink:type="arc" order="52"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinanceCosts_3e2e2258-30a0-42be-9003-1253c312ca24NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_FinanceCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_FinanceCosts_3e2e2258-30a0-42be-9003-1253c312ca24NotDimensionallyQualified" xlink:type="arc" order="53"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NetForeignExchangeLoss_e43abba0-28a4-4e37-80ca-7f89c366aa12NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NetForeignExchangeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_NetForeignExchangeLoss_e43abba0-28a4-4e37-80ca-7f89c366aa12NotDimensionallyQualified" xlink:type="arc" order="54"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_GastoFinancieroNeto_342bbdf9-5c7c-4782-8bca-9eb73fb58bb3NotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_GastoFinancieroNeto"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_GastoFinancieroNeto_342bbdf9-5c7c-4782-8bca-9eb73fb58bb3NotDimensionallyQualified" xlink:type="arc" order="55"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossBeforeTax_5d84bc68-de03-4499-970d-dc312ee306baNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProfitLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_ProfitLossBeforeTax_5d84bc68-de03-4499-970d-dc312ee306baNotDimensionallyQualified" xlink:type="arc" order="56"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxExpenseContinuingOperations_78403b54-ef7a-4a64-b57b-65f296e5cdc8NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncomeTaxExpenseContinuingOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_IncomeTaxExpenseContinuingOperations_78403b54-ef7a-4a64-b57b-65f296e5cdc8NotDimensionallyQualified" xlink:type="arc" order="57"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLoss_6fe1c3d5-362f-4baa-b896-02b94ba75edaNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_ProfitLoss_6fe1c3d5-362f-4baa-b896-02b94ba75edaNotDimensionallyQualified" xlink:type="arc" order="58"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossAttributableToOwnersOfParent_c4d01e54-4942-4425-a09c-64d412519937NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProfitLossAttributableToOwnersOfParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_ProfitLossAttributableToOwnersOfParent_c4d01e54-4942-4425-a09c-64d412519937NotDimensionallyQualified" xlink:type="arc" order="59"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossAttributableToNoncontrollingInterests_8559563e-d9b1-4841-b857-3fc3ca8a2ae5NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProfitLossAttributableToNoncontrollingInterests"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_ProfitLossAttributableToNoncontrollingInterests_8559563e-d9b1-4841-b857-3fc3ca8a2ae5NotDimensionallyQualified" xlink:type="arc" order="60"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BasicAndDilutedEarningsLossPerShare_23bc8ebf-9bf3-46ce-89bd-b94157a09a83NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_BasicAndDilutedEarningsLossPerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_BasicAndDilutedEarningsLossPerShare_23bc8ebf-9bf3-46ce-89bd-b94157a09a83NotDimensionallyQualified" xlink:type="arc" order="61"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncome_cd5da77d-5449-4e7a-b08b-eb97d62c0619NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherComprehensiveIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_OtherComprehensiveIncome_cd5da77d-5449-4e7a-b08b-eb97d62c0619NotDimensionallyQualified" xlink:type="arc" order="62"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesOnRemeasuringAvailableforsaleFinancialAssetsBeforeTax_bc8ed9aa-24c7-48ee-aa6f-a87f205c301aNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_GainsLossesOnRemeasuringAvailableforsaleFinancialAssetsBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_GainsLossesOnRemeasuringAvailableforsaleFinancialAssetsBeforeTax_bc8ed9aa-24c7-48ee-aa6f-a87f205c301aNotDimensionallyQualified" xlink:type="arc" order="63"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_EfectoImpositivoSobreLasGananciasPerdidasRelativoAActivosFinancierosMantenidosParaLaVentaAntesDeImpuestos_59715494-b949-4026-b552-6cfd86ec8ff1NotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_EfectoImpositivoSobreLasGananciasPerdidasRelativoAActivosFinancierosMantenidosParaLaVentaAntesDeImpuestos"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_EfectoImpositivoSobreLasGananciasPerdidasRelativoAActivosFinancierosMantenidosParaLaVentaAntesDeImpuestos_59715494-b949-4026-b552-6cfd86ec8ff1NotDimensionallyQualified" xlink:type="arc" order="64"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReclassificationAdjustmentsOnAvailableforsaleFinancialAssetsBeforeTax_05f6d112-2910-4123-811b-75842a75f27cNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ReclassificationAdjustmentsOnAvailableforsaleFinancialAssetsBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_ReclassificationAdjustmentsOnAvailableforsaleFinancialAssetsBeforeTax_05f6d112-2910-4123-811b-75842a75f27cNotDimensionallyQualified" xlink:type="arc" order="65"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_EfectoImpositivoPorLaReclasificacionRelativosAActivosFinancierosMantenidosParaLaVentaAntesDeImpuestos_9e74a6a5-050f-41ea-939a-7e657974b07dNotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_EfectoImpositivoPorLaReclasificacionRelativosAActivosFinancierosMantenidosParaLaVentaAntesDeImpuestos"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_EfectoImpositivoPorLaReclasificacionRelativosAActivosFinancierosMantenidosParaLaVentaAntesDeImpuestos_9e74a6a5-050f-41ea-939a-7e657974b07dNotDimensionallyQualified" xlink:type="arc" order="66"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxAvailableforsaleFinancialAssets_2bbe994e-5138-4f7b-935b-88ab32c14ef7NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxAvailableforsaleFinancialAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxAvailableforsaleFinancialAssets_2bbe994e-5138-4f7b-935b-88ab32c14ef7NotDimensionallyQualified" xlink:type="arc" order="67"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesOnCashFlowHedgesBeforeTax_281d9d2c-8f99-4381-83e7-a960793bcab0NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_GainsLossesOnCashFlowHedgesBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_GainsLossesOnCashFlowHedgesBeforeTax_281d9d2c-8f99-4381-83e7-a960793bcab0NotDimensionallyQualified" xlink:type="arc" order="68"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_EfectoImpositivoSobreLasGananciasPerdidasProcedentesDeCobertura_e44ae174-6c2f-4808-90be-6e3ad0073ef5NotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_EfectoImpositivoSobreLasGananciasPerdidasProcedentesDeCobertura"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_EfectoImpositivoSobreLasGananciasPerdidasProcedentesDeCobertura_e44ae174-6c2f-4808-90be-6e3ad0073ef5NotDimensionallyQualified" xlink:type="arc" order="69"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReclassificationAdjustmentsOnCashFlowHedgesBeforeTax_0787d156-8dbc-4885-92ca-27a89ea176a9NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ReclassificationAdjustmentsOnCashFlowHedgesBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_ReclassificationAdjustmentsOnCashFlowHedgesBeforeTax_0787d156-8dbc-4885-92ca-27a89ea176a9NotDimensionallyQualified" xlink:type="arc" order="70"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_ImpuestoSobreLaRentaRelacionadoConLaReclasificacionDeGananciasPerdidasEnLaCoberturaDeFlujoDeEfectivo_6ec69444-2442-450f-a725-aafc3bac265cNotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_ImpuestoSobreLaRentaRelacionadoConLaReclasificacionDeGananciasPerdidasEnLaCoberturaDeFlujoDeEfectivo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_ImpuestoSobreLaRentaRelacionadoConLaReclasificacionDeGananciasPerdidasEnLaCoberturaDeFlujoDeEfectivo_6ec69444-2442-450f-a725-aafc3bac265cNotDimensionallyQualified" xlink:type="arc" order="71"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxCashFlowHedges_38621687-0cf6-49a5-91d5-76f4c3a68581NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxCashFlowHedges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxCashFlowHedges_38621687-0cf6-49a5-91d5-76f4c3a68581NotDimensionallyQualified" xlink:type="arc" order="72"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_GananciasPerdidasPorCostosDeCoberturaDeFlujosDeEfectivoAntesDeImpuestos_da88fc7c-af04-4247-9f36-76e9199fa14fNotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_GananciasPerdidasPorCostosDeCoberturaDeFlujosDeEfectivoAntesDeImpuestos"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_GananciasPerdidasPorCostosDeCoberturaDeFlujosDeEfectivoAntesDeImpuestos_da88fc7c-af04-4247-9f36-76e9199fa14fNotDimensionallyQualified" xlink:type="arc" order="73"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_ImpuestoALasGananciasRelacionadoConLosCostosDeCoberturaDeFlujosDeEfectivoIncluidosEnOtroResultadoIntegral_861ea843-6436-4806-a8a0-3ba2b6ffd538NotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_ImpuestoALasGananciasRelacionadoConLosCostosDeCoberturaDeFlujosDeEfectivoIncluidosEnOtroResultadoIntegral"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_ImpuestoALasGananciasRelacionadoConLosCostosDeCoberturaDeFlujosDeEfectivoIncluidosEnOtroResultadoIntegral_861ea843-6436-4806-a8a0-3ba2b6ffd538NotDimensionallyQualified" xlink:type="arc" order="74"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_AjustesPorReclasificacionDeLosCostosDeCoberturaDeFlujosDeEfectivoAntesDeImpuestos_caca012f-1996-42e8-b56d-41ae61d3408dNotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_AjustesPorReclasificacionDeLosCostosDeCoberturaDeFlujosDeEfectivoAntesDeImpuestos"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_AjustesPorReclasificacionDeLosCostosDeCoberturaDeFlujosDeEfectivoAntesDeImpuestos_caca012f-1996-42e8-b56d-41ae61d3408dNotDimensionallyQualified" xlink:type="arc" order="75"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_ImpuestoSobreLaRentaRelacionadoConLaReclasificacionDeGananciasPerdidasSobreCostosDeCoberturaDeFlujosDeEfectivo_70db1c23-4f4f-4da6-a020-9ac975b65d81NotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_ImpuestoSobreLaRentaRelacionadoConLaReclasificacionDeGananciasPerdidasSobreCostosDeCoberturaDeFlujosDeEfectivo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_ImpuestoSobreLaRentaRelacionadoConLaReclasificacionDeGananciasPerdidasSobreCostosDeCoberturaDeFlujosDeEfectivo_70db1c23-4f4f-4da6-a020-9ac975b65d81NotDimensionallyQualified" xlink:type="arc" order="76"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_OtrosResultadosIntegralesNetoDeImpuestosCostosDeCoberturaDeFlujosDeEfectivo_0290e154-4459-47d3-914b-2f6b6120ce19NotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_OtrosResultadosIntegralesNetoDeImpuestosCostosDeCoberturaDeFlujosDeEfectivo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_OtrosResultadosIntegralesNetoDeImpuestosCostosDeCoberturaDeFlujosDeEfectivo_0290e154-4459-47d3-914b-2f6b6120ce19NotDimensionallyQualified" xlink:type="arc" order="77"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_ParticipacionEnPerdidasGananciasImputadasDirectamenteAlPatrimonioNetoAsociadasYOtros_129e4839-9f68-4143-af16-0cee3fcd9c41NotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_ParticipacionEnPerdidasGananciasImputadasDirectamenteAlPatrimonioNetoAsociadasYOtros"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_ParticipacionEnPerdidasGananciasImputadasDirectamenteAlPatrimonioNetoAsociadasYOtros_129e4839-9f68-4143-af16-0cee3fcd9c41NotDimensionallyQualified" xlink:type="arc" order="78"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_ImpuestoSobreLaRentaRelativoALaParticipacionEnLasGananciasPerdidasReconocidasDirectamenteEnElPatrimonioDeAsociadasYOtros_92120682-297c-432d-bde0-fc95eee71761NotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_ImpuestoSobreLaRentaRelativoALaParticipacionEnLasGananciasPerdidasReconocidasDirectamenteEnElPatrimonioDeAsociadasYOtros"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_ImpuestoSobreLaRentaRelativoALaParticipacionEnLasGananciasPerdidasReconocidasDirectamenteEnElPatrimonioDeAsociadasYOtros_92120682-297c-432d-bde0-fc95eee71761NotDimensionallyQualified" xlink:type="arc" order="79"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_ReclasificacionRelacionadaConLaParticipacionEnLasGananciasPerdidasReconocidasDirectamenteEnElPatrimonioDeAsociadasYOtros_54cdb16b-f45b-419e-ab44-36557b0b64e2NotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_ReclasificacionRelacionadaConLaParticipacionEnLasGananciasPerdidasReconocidasDirectamenteEnElPatrimonioDeAsociadasYOtros"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_ReclasificacionRelacionadaConLaParticipacionEnLasGananciasPerdidasReconocidasDirectamenteEnElPatrimonioDeAsociadasYOtros_54cdb16b-f45b-419e-ab44-36557b0b64e2NotDimensionallyQualified" xlink:type="arc" order="80"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_ImpuestoSobreLaRentaRelacionadoConLaReclasificacionDeLaParticipacionEnLasGananciasPerdidasReconocidasDirectamenteEnElPatrimonioDeAsociadasYOtros_0a1c68c8-8bc0-4bc9-a35b-0e17c493e39bNotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_ImpuestoSobreLaRentaRelacionadoConLaReclasificacionDeLaParticipacionEnLasGananciasPerdidasReconocidasDirectamenteEnElPatrimonioDeAsociadasYOtros"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_ImpuestoSobreLaRentaRelacionadoConLaReclasificacionDeLaParticipacionEnLasGananciasPerdidasReconocidasDirectamenteEnElPatrimonioDeAsociadasYOtros_0a1c68c8-8bc0-4bc9-a35b-0e17c493e39bNotDimensionallyQualified" xlink:type="arc" order="81"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossNetOfTax_15ded187-5b23-495f-a3fa-de1ebec98ed2NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossNetOfTax_15ded187-5b23-495f-a3fa-de1ebec98ed2NotDimensionallyQualified" xlink:type="arc" order="82"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation_12bd8126-8ca2-4d9c-ab91-895e222f311aNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation_12bd8126-8ca2-4d9c-ab91-895e222f311aNotDimensionallyQualified" xlink:type="arc" order="83"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax_85c30720-cf3c-4a1a-8a25-6f02635c1d55NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax_85c30720-cf3c-4a1a-8a25-6f02635c1d55NotDimensionallyQualified" xlink:type="arc" order="84"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_PerdidasGananciasActuarialesYEfectoDelLimiteDelActivoPorPlanesDePrestacionDefinida_72280d6d-4e5f-4505-9aae-ed9e871d6762NotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_PerdidasGananciasActuarialesYEfectoDelLimiteDelActivoPorPlanesDePrestacionDefinida"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_PerdidasGananciasActuarialesYEfectoDelLimiteDelActivoPorPlanesDePrestacionDefinida_72280d6d-4e5f-4505-9aae-ed9e871d6762NotDimensionallyQualified" xlink:type="arc" order="85"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome_9473319f-2f81-4f43-973d-6669ee972c88NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome_9473319f-2f81-4f43-973d-6669ee972c88NotDimensionallyQualified" xlink:type="arc" order="86"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_AjustePorReclasificacionSobreNuevasMedicionesDePlanesDeBeneficiosDefinidosAntesDeImpuestos_fc5f310d-33b2-45f9-9959-79a38ca7fed9NotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_AjustePorReclasificacionSobreNuevasMedicionesDePlanesDeBeneficiosDefinidosAntesDeImpuestos"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_AjustePorReclasificacionSobreNuevasMedicionesDePlanesDeBeneficiosDefinidosAntesDeImpuestos_fc5f310d-33b2-45f9-9959-79a38ca7fed9NotDimensionallyQualified" xlink:type="arc" order="87"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans_b4b0e1f0-503e-4d9a-a762-142f079cba25NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans_b4b0e1f0-503e-4d9a-a762-142f079cba25NotDimensionallyQualified" xlink:type="arc" order="88"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeBeforeTaxGainsLossesOnRevaluation_673b86d0-4a10-4aa4-bee4-c4589263e0afNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherComprehensiveIncomeBeforeTaxGainsLossesOnRevaluation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_OtherComprehensiveIncomeBeforeTaxGainsLossesOnRevaluation_673b86d0-4a10-4aa4-bee4-c4589263e0afNotDimensionallyQualified" xlink:type="arc" order="89"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxRelatingToChangesInRevaluationSurplusOfOtherComprehensiveIncome_e33be7b1-2516-4959-be93-6eb5bdfb59beNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncomeTaxRelatingToChangesInRevaluationSurplusOfOtherComprehensiveIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_IncomeTaxRelatingToChangesInRevaluationSurplusOfOtherComprehensiveIncome_e33be7b1-2516-4959-be93-6eb5bdfb59beNotDimensionallyQualified" xlink:type="arc" order="90"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRevaluation_0cfccead-d133-410b-8a16-729e7aedc21bNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRevaluation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRevaluation_0cfccead-d133-410b-8a16-729e7aedc21bNotDimensionallyQualified" xlink:type="arc" order="91"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax_f0994de3-cc53-49f9-9b9c-42ca72f7d9bcNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax_f0994de3-cc53-49f9-9b9c-42ca72f7d9bcNotDimensionallyQualified" xlink:type="arc" order="92"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncome_68b3e30d-a78e-4716-b5e3-f0aa8f267dbeNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ComprehensiveIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_ComprehensiveIncome_68b3e30d-a78e-4716-b5e3-f0aa8f267dbeNotDimensionallyQualified" xlink:type="arc" order="93"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent_2efe5dc7-f543-4356-a2ad-8074ce3075f1NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent_2efe5dc7-f543-4356-a2ad-8074ce3075f1NotDimensionallyQualified" xlink:type="arc" order="94"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests_a4e728c4-c8a4-4a2b-b481-d0dbedc571d6NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests_a4e728c4-c8a4-4a2b-b481-d0dbedc571d6NotDimensionallyQualified" xlink:type="arc" order="95"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_FlujosDeEfectivoDeLasOperaciones_b1ddab1c-8621-4ed3-9996-3b956dcc49c8NotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_FlujosDeEfectivoDeLasOperaciones"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_FlujosDeEfectivoDeLasOperaciones_b1ddab1c-8621-4ed3-9996-3b956dcc49c8NotDimensionallyQualified" xlink:type="arc" order="96"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_FlujosDeEfectivoUtilizadosEnOperaciones_6bc14842-e7eb-4da2-9c87-c5f89566abbbNotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_FlujosDeEfectivoUtilizadosEnOperaciones"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_FlujosDeEfectivoUtilizadosEnOperaciones_6bc14842-e7eb-4da2-9c87-c5f89566abbbNotDimensionallyQualified" xlink:type="arc" order="97"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_PagoDeInteresesYOtrosGastosFinancierosNetoDeDividendosRecibidos_484c807b-243b-4db4-8452-4125c155c25aNotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_PagoDeInteresesYOtrosGastosFinancierosNetoDeDividendosRecibidos"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_PagoDeInteresesYOtrosGastosFinancierosNetoDeDividendosRecibidos_484c807b-243b-4db4-8452-4125c155c25aNotDimensionallyQualified" xlink:type="arc" order="98"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities_6d2f485c-34b2-459e-8349-4160933eec62NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities_6d2f485c-34b2-459e-8349-4160933eec62NotDimensionallyQualified" xlink:type="arc" order="99"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities_b0a9db66-af4d-4b79-9e10-704f7e5b2fa4NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities_b0a9db66-af4d-4b79-9e10-704f7e5b2fa4NotDimensionallyQualified" xlink:type="arc" order="100"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_ProductoDeCompraPropiedadPlantaYEquipoYActivosIntangiblesClasificadosComoActividadesDeInversion_504cae3c-7338-4d93-9926-ed94676c9f32NotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_ProductoDeCompraPropiedadPlantaYEquipoYActivosIntangiblesClasificadosComoActividadesDeInversion"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_ProductoDeCompraPropiedadPlantaYEquipoYActivosIntangiblesClasificadosComoActividadesDeInversion_504cae3c-7338-4d93-9926-ed94676c9f32NotDimensionallyQualified" xlink:type="arc" order="101"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities_889d5d37-0b93-46b2-898e-88acfdfc8e34NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities_889d5d37-0b93-46b2-898e-88acfdfc8e34NotDimensionallyQualified" xlink:type="arc" order="102"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities_7ec9f5f8-8747-4ca1-a1c7-ba357dc2803dNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities_7ec9f5f8-8747-4ca1-a1c7-ba357dc2803dNotDimensionallyQualified" xlink:type="arc" order="103"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_IngresosDeInversionesFinancierasNoIncluidosEnEquivalentesDeEfectivo_452a8ff8-d746-48d6-8e0f-239624e05a7fNotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_IngresosDeInversionesFinancierasNoIncluidosEnEquivalentesDeEfectivo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_IngresosDeInversionesFinancierasNoIncluidosEnEquivalentesDeEfectivo_452a8ff8-d746-48d6-8e0f-239624e05a7fNotDimensionallyQualified" xlink:type="arc" order="104"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_PagosPorInversionesFinancierasNoIncluidasEnEquivalentesDeEfectivo_11ea9d66-6671-46e5-866f-7f4fc9bf8b5dNotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_PagosPorInversionesFinancierasNoIncluidasEnEquivalentesDeEfectivo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_PagosPorInversionesFinancierasNoIncluidasEnEquivalentesDeEfectivo_11ea9d66-6671-46e5-866f-7f4fc9bf8b5dNotDimensionallyQualified" xlink:type="arc" order="105"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_IngresosDePagosPorColocacionesDeExcedentesDeEfectivoNoIncluidosEnEquivalentesDeEfectivo_8db1fe32-c7be-43cd-bcbc-bbe7d53883c8NotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_IngresosDePagosPorColocacionesDeExcedentesDeEfectivoNoIncluidosEnEquivalentesDeEfectivo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_IngresosDePagosPorColocacionesDeExcedentesDeEfectivoNoIncluidosEnEquivalentesDeEfectivo_8db1fe32-c7be-43cd-bcbc-bbe7d53883c8NotDimensionallyQualified" xlink:type="arc" order="106"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromGovernmentGrantsClassifiedAsInvestingActivities_7150b708-815f-4a20-8151-b2d68dc951acNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProceedsFromGovernmentGrantsClassifiedAsInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_ProceedsFromGovernmentGrantsClassifiedAsInvestingActivities_7150b708-815f-4a20-8151-b2d68dc951acNotDimensionallyQualified" xlink:type="arc" order="107"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities_a301f47f-23af-4514-a7f9-dae7064d332fNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities_a301f47f-23af-4514-a7f9-dae7064d332fNotDimensionallyQualified" xlink:type="arc" order="108"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DividendsPaidClassifiedAsFinancingActivities_3f8027a1-c58b-4cf1-8cd5-f674476fe8d8NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DividendsPaidClassifiedAsFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_DividendsPaidClassifiedAsFinancingActivities_3f8027a1-c58b-4cf1-8cd5-f674476fe8d8NotDimensionallyQualified" xlink:type="arc" order="109"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromIssuingShares_e8ae5d77-ccac-46a6-a7b0-f756539924c4NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProceedsFromIssuingShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_ProceedsFromIssuingShares_e8ae5d77-ccac-46a6-a7b0-f756539924c4NotDimensionallyQualified" xlink:type="arc" order="110"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_IngresosDePagosPorAccionesEnTesoreriaYOtrasActividadesDeLosAccionistas_f1bf6d65-8be3-4876-a935-f0951e927d31NotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_IngresosDePagosPorAccionesEnTesoreriaYOtrasActividadesDeLosAccionistas"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_IngresosDePagosPorAccionesEnTesoreriaYOtrasActividadesDeLosAccionistas_f1bf6d65-8be3-4876-a935-f0951e927d31NotDimensionallyQualified" xlink:type="arc" order="111"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_OperacionesConOtrosTenedoresDeInstrumentosDePatrimonio_888add50-dd00-44a3-8474-b09540b6a595NotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_OperacionesConOtrosTenedoresDeInstrumentosDePatrimonio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_OperacionesConOtrosTenedoresDeInstrumentosDePatrimonio_888add50-dd00-44a3-8474-b09540b6a595NotDimensionallyQualified" xlink:type="arc" order="112"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromIssueOfBondsNotesAndDebentures_d48fc5ac-ea49-4f42-b6d5-eb8519507feaNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProceedsFromIssueOfBondsNotesAndDebentures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_ProceedsFromIssueOfBondsNotesAndDebentures_d48fc5ac-ea49-4f42-b6d5-eb8519507feaNotDimensionallyQualified" xlink:type="arc" order="113"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_dfd28a50-9f7d-4da3-807f-2c238bc52c4aNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_dfd28a50-9f7d-4da3-807f-2c238bc52c4aNotDimensionallyQualified" xlink:type="arc" order="114"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RepaymentsOfBondsNotesAndDebentures_80ccfd46-86b8-471f-bedb-68ae7874e05eNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_RepaymentsOfBondsNotesAndDebentures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_RepaymentsOfBondsNotesAndDebentures_80ccfd46-86b8-471f-bedb-68ae7874e05eNotDimensionallyQualified" xlink:type="arc" order="115"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities_b817cf15-da8e-4989-9f7c-ac8e1dde221aNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities_b817cf15-da8e-4989-9f7c-ac8e1dde221aNotDimensionallyQualified" xlink:type="arc" order="116"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities_a9e5dc2a-db0f-4f9f-8e45-24cbaa60ba77NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities_a9e5dc2a-db0f-4f9f-8e45-24cbaa60ba77NotDimensionallyQualified" xlink:type="arc" order="117"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_PagosDeExplotacionEInversionesMaterialesEIntangiblesFinanciados_428f6491-301b-4bac-b835-2d8411dfa42cNotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_PagosDeExplotacionEInversionesMaterialesEIntangiblesFinanciados"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_PagosDeExplotacionEInversionesMaterialesEIntangiblesFinanciados_428f6491-301b-4bac-b835-2d8411dfa42cNotDimensionallyQualified" xlink:type="arc" order="118"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_d1d045cc-2d33-4fb4-8fd7-94840781ad52NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_d1d045cc-2d33-4fb4-8fd7-94840781ad52NotDimensionallyQualified" xlink:type="arc" order="119"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents_7ab2db54-ddc4-484f-8fe9-6496fc2c0c00NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents_7ab2db54-ddc4-484f-8fe9-6496fc2c0c00NotDimensionallyQualified" xlink:type="arc" order="120"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashAndCashEquivalentsClassifiedAsPartOfDisposalGroupHeldForSale_31ab9f6c-3c7f-42dd-b3ec-6071eec8f448NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashAndCashEquivalentsClassifiedAsPartOfDisposalGroupHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CashAndCashEquivalentsClassifiedAsPartOfDisposalGroupHeldForSale_31ab9f6c-3c7f-42dd-b3ec-6071eec8f448NotDimensionallyQualified" xlink:type="arc" order="121"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_EfectoDeLosCambiosEnLosMetodosDeConsolidacionYOtrosSobreElEfectivoYEquivalentes_adaa6a40-f034-4246-84fb-1ca25cbc88e9NotDimensionallyQualified" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_EfectoDeLosCambiosEnLosMetodosDeConsolidacionYOtrosSobreElEfectivoYEquivalentes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_tef_EfectoDeLosCambiosEnLosMetodosDeConsolidacionYOtrosSobreElEfectivoYEquivalentes_adaa6a40-f034-4246-84fb-1ca25cbc88e9NotDimensionallyQualified" xlink:type="arc" order="122"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents_ea566142-7bfb-429a-b90c-93bfb8f76758NotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents_ea566142-7bfb-429a-b90c-93bfb8f76758NotDimensionallyQualified" xlink:type="arc" order="123"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Cash_4e7639dd-7b81-428b-b5f4-29057bd4773fNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Cash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_Cash_4e7639dd-7b81-428b-b5f4-29057bd4773fNotDimensionallyQualified" xlink:type="arc" order="124"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashEquivalents_3e97eef4-a155-41ab-bb12-8d56300e582bNotDimensionallyQualified" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="loc_ifrs-full_CashEquivalents_3e97eef4-a155-41ab-bb12-8d56300e582bNotDimensionallyQualified" xlink:type="arc" order="125"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.telefonica.com/role/Anchoring" xlink:type="simple" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#Anchoring"/>
  <link:definitionLink xlink:role="http://www.telefonica.com/role/Anchoring" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_tef_ActivosFinancierosYOtrosActivosNoCorrientes_08ecf271-2667-47aa-b27b-f0629a99a542" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_ActivosFinancierosYOtrosActivosNoCorrientes"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentAssets" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_NoncurrentAssets" xlink:to="loc_tef_ActivosFinancierosYOtrosActivosNoCorrientes_08ecf271-2667-47aa-b27b-f0629a99a542" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherNoncurrentAssets" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherNoncurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_ActivosFinancierosYOtrosActivosNoCorrientes_08ecf271-2667-47aa-b27b-f0629a99a542" xlink:to="loc_ifrs-full_OtherNoncurrentAssets" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentFinancialAssets" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentFinancialAssets"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_ActivosFinancierosYOtrosActivosNoCorrientes_08ecf271-2667-47aa-b27b-f0629a99a542" xlink:to="loc_ifrs-full_NoncurrentFinancialAssets" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_AjusteEnLaAplicacionInicialDeNuevasNormasContables_88e45614-a70f-4370-8f61-76b796ec9a7f" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_AjusteEnLaAplicacionInicialDeNuevasNormasContables"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Equity" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Equity"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_Equity" xlink:to="loc_tef_AjusteEnLaAplicacionInicialDeNuevasNormasContables_88e45614-a70f-4370-8f61-76b796ec9a7f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_AjustePorReclasificacionSobreNuevasMedicionesDePlanesDeBeneficiosDefinidosAntesDeImpuestos_90924e81-85d1-4181-91e4-ecf753b7e36a" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_AjustePorReclasificacionSobreNuevasMedicionesDePlanesDeBeneficiosDefinidosAntesDeImpuestos"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans" xlink:to="loc_tef_AjustePorReclasificacionSobreNuevasMedicionesDePlanesDeBeneficiosDefinidosAntesDeImpuestos_90924e81-85d1-4181-91e4-ecf753b7e36a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_AjustesPorReclasificacionDeLosCostosDeCoberturaDeFlujosDeEfectivoAntesDeImpuestos_d3c8ee1e-1d2e-468e-8f3c-5d04d1099c5f" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_AjustesPorReclasificacionDeLosCostosDeCoberturaDeFlujosDeEfectivoAntesDeImpuestos"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncome" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherComprehensiveIncome"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_OtherComprehensiveIncome" xlink:to="loc_tef_AjustesPorReclasificacionDeLosCostosDeCoberturaDeFlujosDeEfectivoAntesDeImpuestos_d3c8ee1e-1d2e-468e-8f3c-5d04d1099c5f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_AumentoDisminucionATravesDeValoresSubordinadosSinFecha_db44c402-2b4e-48e3-80d8-694b419a3ee6" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_AumentoDisminucionATravesDeValoresSubordinadosSinFecha"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ChangesInEquity" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ChangesInEquity"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_ChangesInEquity" xlink:to="loc_tef_AumentoDisminucionATravesDeValoresSubordinadosSinFecha_db44c402-2b4e-48e3-80d8-694b419a3ee6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_CambioContableEImpactoDeLaHiperinflacion_46e3d028-41cf-4334-a05d-3da7fe04c42c" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_CambioContableEImpactoDeLaHiperinflacion"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_Equity" xlink:to="loc_tef_CambioContableEImpactoDeLaHiperinflacion_46e3d028-41cf-4334-a05d-3da7fe04c42c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_CambioDePoliticaContable_339aa005-b0c4-4f12-b4c0-e20c3025a814" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_CambioDePoliticaContable"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_Equity" xlink:to="loc_tef_CambioDePoliticaContable_339aa005-b0c4-4f12-b4c0-e20c3025a814" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_CuentasAPagarYOtrosPasivosCorrientes_8aa933f2-6cb9-4a97-b934-6048f22c3e4f" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_CuentasAPagarYOtrosPasivosCorrientes"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentLiabilities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_CurrentLiabilities" xlink:to="loc_tef_CuentasAPagarYOtrosPasivosCorrientes_8aa933f2-6cb9-4a97-b934-6048f22c3e4f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherCurrentLiabilities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherCurrentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_CuentasAPagarYOtrosPasivosCorrientes_8aa933f2-6cb9-4a97-b934-6048f22c3e4f" xlink:to="loc_ifrs-full_OtherCurrentLiabilities" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradeAndOtherCurrentPayables" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_TradeAndOtherCurrentPayables"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_CuentasAPagarYOtrosPasivosCorrientes_8aa933f2-6cb9-4a97-b934-6048f22c3e4f" xlink:to="loc_ifrs-full_TradeAndOtherCurrentPayables" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_CuentasAPagarYOtrosPasivosNoCorrientes_b8b78183-8335-461d-82e5-985777cce5fe" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_CuentasAPagarYOtrosPasivosNoCorrientes"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentLiabilities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_NoncurrentLiabilities" xlink:to="loc_tef_CuentasAPagarYOtrosPasivosNoCorrientes_b8b78183-8335-461d-82e5-985777cce5fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentPayables" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentPayables"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_CuentasAPagarYOtrosPasivosNoCorrientes_b8b78183-8335-461d-82e5-985777cce5fe" xlink:to="loc_ifrs-full_NoncurrentPayables" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherNoncurrentLiabilities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherNoncurrentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_CuentasAPagarYOtrosPasivosNoCorrientes_b8b78183-8335-461d-82e5-985777cce5fe" xlink:to="loc_ifrs-full_OtherNoncurrentLiabilities" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_CuentasPorCobrarYOtrosActivosCorrientes_e693b54b-1e85-49a5-94bc-998ed4187ab5" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_CuentasPorCobrarYOtrosActivosCorrientes"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentAssets" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_CurrentAssets" xlink:to="loc_tef_CuentasPorCobrarYOtrosActivosCorrientes_e693b54b-1e85-49a5-94bc-998ed4187ab5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradeAndOtherCurrentReceivables" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_TradeAndOtherCurrentReceivables"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_CuentasPorCobrarYOtrosActivosCorrientes_e693b54b-1e85-49a5-94bc-998ed4187ab5" xlink:to="loc_ifrs-full_TradeAndOtherCurrentReceivables" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherCurrentAssets" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherCurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_CuentasPorCobrarYOtrosActivosCorrientes_e693b54b-1e85-49a5-94bc-998ed4187ab5" xlink:to="loc_ifrs-full_OtherCurrentAssets" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_EfectoDeLosCambiosEnLosMetodosDeConsolidacionYOtrosSobreElEfectivoYEquivalentes_4d79363c-94df-4443-bd6f-9800313b82bf" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_EfectoDeLosCambiosEnLosMetodosDeConsolidacionYOtrosSobreElEfectivoYEquivalentes"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:to="loc_tef_EfectoDeLosCambiosEnLosMetodosDeConsolidacionYOtrosSobreElEfectivoYEquivalentes_4d79363c-94df-4443-bd6f-9800313b82bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_EfectoImpositivoPorLaReclasificacionRelativosAActivosFinancierosMantenidosParaLaVentaAntesDeImpuestos_022aa253-24a9-4d9f-b992-df6589bbfb5b" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_EfectoImpositivoPorLaReclasificacionRelativosAActivosFinancierosMantenidosParaLaVentaAntesDeImpuestos"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxRelatingToAvailableforsaleFinancialAssetsOfOtherComprehensiveIncome" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncomeTaxRelatingToAvailableforsaleFinancialAssetsOfOtherComprehensiveIncome"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_IncomeTaxRelatingToAvailableforsaleFinancialAssetsOfOtherComprehensiveIncome" xlink:to="loc_tef_EfectoImpositivoPorLaReclasificacionRelativosAActivosFinancierosMantenidosParaLaVentaAntesDeImpuestos_022aa253-24a9-4d9f-b992-df6589bbfb5b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_EfectoImpositivoSobreLasGananciasPerdidasProcedentesDeCobertura_fc31ad72-2010-41ba-9e9a-d665a31511af" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_EfectoImpositivoSobreLasGananciasPerdidasProcedentesDeCobertura"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome" xlink:to="loc_tef_EfectoImpositivoSobreLasGananciasPerdidasProcedentesDeCobertura_fc31ad72-2010-41ba-9e9a-d665a31511af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_EfectoImpositivoSobreLasGananciasPerdidasRelativoAActivosFinancierosMantenidosParaLaVentaAntesDeImpuestos_8efd14cb-e2eb-418f-b9a5-8fab39cd42ef" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_EfectoImpositivoSobreLasGananciasPerdidasRelativoAActivosFinancierosMantenidosParaLaVentaAntesDeImpuestos"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_IncomeTaxRelatingToAvailableforsaleFinancialAssetsOfOtherComprehensiveIncome" xlink:to="loc_tef_EfectoImpositivoSobreLasGananciasPerdidasRelativoAActivosFinancierosMantenidosParaLaVentaAntesDeImpuestos_8efd14cb-e2eb-418f-b9a5-8fab39cd42ef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_FlujosDeEfectivoDeLasOperaciones_0ac2e408-56ac-4421-8dab-bb3eadc98938" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_FlujosDeEfectivoDeLasOperaciones"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperations" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsFromUsedInOperations"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperations" xlink:to="loc_tef_FlujosDeEfectivoDeLasOperaciones_0ac2e408-56ac-4421-8dab-bb3eadc98938" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherCashReceiptsFromOperatingActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherCashReceiptsFromOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_FlujosDeEfectivoDeLasOperaciones_0ac2e408-56ac-4421-8dab-bb3eadc98938" xlink:to="loc_ifrs-full_OtherCashReceiptsFromOperatingActivities" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReceiptsFromSalesOfGoodsAndRenderingOfServices" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ReceiptsFromSalesOfGoodsAndRenderingOfServices"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_FlujosDeEfectivoDeLasOperaciones_0ac2e408-56ac-4421-8dab-bb3eadc98938" xlink:to="loc_ifrs-full_ReceiptsFromSalesOfGoodsAndRenderingOfServices" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_FlujosDeEfectivoUtilizadosEnOperaciones_c8205567-a88e-4f38-8d1e-e94778524f72" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_FlujosDeEfectivoUtilizadosEnOperaciones"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperations" xlink:to="loc_tef_FlujosDeEfectivoUtilizadosEnOperaciones_c8205567-a88e-4f38-8d1e-e94778524f72" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PaymentsToAndOnBehalfOfEmployees" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PaymentsToAndOnBehalfOfEmployees"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_FlujosDeEfectivoUtilizadosEnOperaciones_c8205567-a88e-4f38-8d1e-e94778524f72" xlink:to="loc_ifrs-full_PaymentsToAndOnBehalfOfEmployees" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PaymentsToSuppliersForGoodsAndServices" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PaymentsToSuppliersForGoodsAndServices"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_FlujosDeEfectivoUtilizadosEnOperaciones_c8205567-a88e-4f38-8d1e-e94778524f72" xlink:to="loc_ifrs-full_PaymentsToSuppliersForGoodsAndServices" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherCashPaymentsFromOperatingActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherCashPaymentsFromOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_FlujosDeEfectivoUtilizadosEnOperaciones_c8205567-a88e-4f38-8d1e-e94778524f72" xlink:to="loc_ifrs-full_OtherCashPaymentsFromOperatingActivities" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_GananciasPerdidasPorCostosDeCoberturaDeFlujosDeEfectivoAntesDeImpuestos_f853c934-9f0f-4ab9-8d2b-59da76ca3530" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_GananciasPerdidasPorCostosDeCoberturaDeFlujosDeEfectivoAntesDeImpuestos"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_OtherComprehensiveIncome" xlink:to="loc_tef_GananciasPerdidasPorCostosDeCoberturaDeFlujosDeEfectivoAntesDeImpuestos_f853c934-9f0f-4ab9-8d2b-59da76ca3530" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_ImpuestoALasGananciasRelacionadoConLosCostosDeCoberturaDeFlujosDeEfectivoIncluidosEnOtroResultadoIntegral_0c32a2f4-ae8a-45fa-8dbf-3e92d14f008e" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_ImpuestoALasGananciasRelacionadoConLosCostosDeCoberturaDeFlujosDeEfectivoIncluidosEnOtroResultadoIntegral"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_OtherComprehensiveIncome" xlink:to="loc_tef_ImpuestoALasGananciasRelacionadoConLosCostosDeCoberturaDeFlujosDeEfectivoIncluidosEnOtroResultadoIntegral_0c32a2f4-ae8a-45fa-8dbf-3e92d14f008e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_ImpuestoSobreLaRentaRelacionadoConLaReclasificacionDeGananciasPerdidasEnLaCoberturaDeFlujoDeEfectivo_86844a13-ccf4-4bc5-b4bf-65bd656da22a" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_ImpuestoSobreLaRentaRelacionadoConLaReclasificacionDeGananciasPerdidasEnLaCoberturaDeFlujoDeEfectivo"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome" xlink:to="loc_tef_ImpuestoSobreLaRentaRelacionadoConLaReclasificacionDeGananciasPerdidasEnLaCoberturaDeFlujoDeEfectivo_86844a13-ccf4-4bc5-b4bf-65bd656da22a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_ImpuestoSobreLaRentaRelacionadoConLaReclasificacionDeGananciasPerdidasSobreCostosDeCoberturaDeFlujosDeEfectivo_70d534ac-8dcd-4c04-a36c-75c6b6e0900a" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_ImpuestoSobreLaRentaRelacionadoConLaReclasificacionDeGananciasPerdidasSobreCostosDeCoberturaDeFlujosDeEfectivo"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_OtherComprehensiveIncome" xlink:to="loc_tef_ImpuestoSobreLaRentaRelacionadoConLaReclasificacionDeGananciasPerdidasSobreCostosDeCoberturaDeFlujosDeEfectivo_70d534ac-8dcd-4c04-a36c-75c6b6e0900a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_ImpuestoSobreLaRentaRelacionadoConLaReclasificacionDeLaParticipacionEnLasGananciasPerdidasReconocidasDirectamenteEnElPatrimonioDeAsociadasYOtros_88580e85-bd61-4752-a301-edfd5221bdf5" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_ImpuestoSobreLaRentaRelacionadoConLaReclasificacionDeLaParticipacionEnLasGananciasPerdidasReconocidasDirectamenteEnElPatrimonioDeAsociadasYOtros"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxRelatingToShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLoss" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncomeTaxRelatingToShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLoss"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_IncomeTaxRelatingToShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLoss" xlink:to="loc_tef_ImpuestoSobreLaRentaRelacionadoConLaReclasificacionDeLaParticipacionEnLasGananciasPerdidasReconocidasDirectamenteEnElPatrimonioDeAsociadasYOtros_88580e85-bd61-4752-a301-edfd5221bdf5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_ImpuestoSobreLaRentaRelativoALaParticipacionEnLasGananciasPerdidasReconocidasDirectamenteEnElPatrimonioDeAsociadasYOtros_084bb739-9a7b-4573-a7f9-74ba6a4521f5" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_ImpuestoSobreLaRentaRelativoALaParticipacionEnLasGananciasPerdidasReconocidasDirectamenteEnElPatrimonioDeAsociadasYOtros"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_IncomeTaxRelatingToShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLoss" xlink:to="loc_tef_ImpuestoSobreLaRentaRelativoALaParticipacionEnLasGananciasPerdidasReconocidasDirectamenteEnElPatrimonioDeAsociadasYOtros_084bb739-9a7b-4573-a7f9-74ba6a4521f5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_IngresosDeInversionesFinancierasNoIncluidosEnEquivalentesDeEfectivo_547906e2-d0fe-4e55-a388-775ddcbf79d9" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_IngresosDeInversionesFinancierasNoIncluidosEnEquivalentesDeEfectivo"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherCashReceiptsFromSalesOfEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherCashReceiptsFromSalesOfEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_OtherCashReceiptsFromSalesOfEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities" xlink:to="loc_tef_IngresosDeInversionesFinancierasNoIncluidosEnEquivalentesDeEfectivo_547906e2-d0fe-4e55-a388-775ddcbf79d9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_IngresosDePagosPorAccionesEnTesoreriaYOtrasActividadesDeLosAccionistas_45907146-24f3-4d52-bad3-d99a5a7c361e" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_IngresosDePagosPorAccionesEnTesoreriaYOtrasActividadesDeLosAccionistas"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:to="loc_tef_IngresosDePagosPorAccionesEnTesoreriaYOtrasActividadesDeLosAccionistas_45907146-24f3-4d52-bad3-d99a5a7c361e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromIssuingShares" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProceedsFromIssuingShares"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_IngresosDePagosPorAccionesEnTesoreriaYOtrasActividadesDeLosAccionistas_45907146-24f3-4d52-bad3-d99a5a7c361e" xlink:to="loc_ifrs-full_ProceedsFromIssuingShares" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PaymentsToAcquireOrRedeemEntitysShares" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PaymentsToAcquireOrRedeemEntitysShares"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_IngresosDePagosPorAccionesEnTesoreriaYOtrasActividadesDeLosAccionistas_45907146-24f3-4d52-bad3-d99a5a7c361e" xlink:to="loc_ifrs-full_PaymentsToAcquireOrRedeemEntitysShares" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PaymentsFromChangesInOwnershipInterestsInSubsidiaries" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PaymentsFromChangesInOwnershipInterestsInSubsidiaries"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_IngresosDePagosPorAccionesEnTesoreriaYOtrasActividadesDeLosAccionistas_45907146-24f3-4d52-bad3-d99a5a7c361e" xlink:to="loc_ifrs-full_PaymentsFromChangesInOwnershipInterestsInSubsidiaries" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromChangesInOwnershipInterestsInSubsidiaries" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProceedsFromChangesInOwnershipInterestsInSubsidiaries"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_IngresosDePagosPorAccionesEnTesoreriaYOtrasActividadesDeLosAccionistas_45907146-24f3-4d52-bad3-d99a5a7c361e" xlink:to="loc_ifrs-full_ProceedsFromChangesInOwnershipInterestsInSubsidiaries" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_IngresosDePagosPorColocacionesDeExcedentesDeEfectivoNoIncluidosEnEquivalentesDeEfectivo_5985efb1-3284-490c-bb2a-3a81c72ad738" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_IngresosDePagosPorColocacionesDeExcedentesDeEfectivoNoIncluidosEnEquivalentesDeEfectivo"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities" xlink:to="loc_tef_IngresosDePagosPorColocacionesDeExcedentesDeEfectivoNoIncluidosEnEquivalentesDeEfectivo_5985efb1-3284-490c-bb2a-3a81c72ad738" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_OperacionesConOtrosTenedoresDeInstrumentosDePatrimonio_d2f05ee3-0b40-40b4-88a7-a2b0035374b8" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_OperacionesConOtrosTenedoresDeInstrumentosDePatrimonio"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="loc_tef_OperacionesConOtrosTenedoresDeInstrumentosDePatrimonio_d2f05ee3-0b40-40b4-88a7-a2b0035374b8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PaymentsOfOtherEquityInstruments" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PaymentsOfOtherEquityInstruments"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_OperacionesConOtrosTenedoresDeInstrumentosDePatrimonio_d2f05ee3-0b40-40b4-88a7-a2b0035374b8" xlink:to="loc_ifrs-full_PaymentsOfOtherEquityInstruments" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromIssuingOtherEquityInstruments" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProceedsFromIssuingOtherEquityInstruments"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_OperacionesConOtrosTenedoresDeInstrumentosDePatrimonio_d2f05ee3-0b40-40b4-88a7-a2b0035374b8" xlink:to="loc_ifrs-full_ProceedsFromIssuingOtherEquityInstruments" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_PagoDeInteresesYOtrosGastosFinancierosNetoDeDividendosRecibidos_0212425f-f86d-4eef-a919-9a4d8d56636f" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_PagoDeInteresesYOtrosGastosFinancierosNetoDeDividendosRecibidos"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_tef_PagoDeInteresesYOtrosGastosFinancierosNetoDeDividendosRecibidos_0212425f-f86d-4eef-a919-9a4d8d56636f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DividendsReceivedClassifiedAsOperatingActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DividendsReceivedClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_PagoDeInteresesYOtrosGastosFinancierosNetoDeDividendosRecibidos_0212425f-f86d-4eef-a919-9a4d8d56636f" xlink:to="loc_ifrs-full_DividendsReceivedClassifiedAsOperatingActivities" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestPaidClassifiedAsOperatingActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_InterestPaidClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_PagoDeInteresesYOtrosGastosFinancierosNetoDeDividendosRecibidos_0212425f-f86d-4eef-a919-9a4d8d56636f" xlink:to="loc_ifrs-full_InterestPaidClassifiedAsOperatingActivities" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestReceivedClassifiedAsOperatingActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_InterestReceivedClassifiedAsOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_PagoDeInteresesYOtrosGastosFinancierosNetoDeDividendosRecibidos_0212425f-f86d-4eef-a919-9a4d8d56636f" xlink:to="loc_ifrs-full_InterestReceivedClassifiedAsOperatingActivities" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_PagosDeExplotacionEInversionesMaterialesEIntangiblesFinanciados_b8d8e97b-808f-413c-9c45-2b27709dfe2c" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_PagosDeExplotacionEInversionesMaterialesEIntangiblesFinanciados"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="loc_tef_PagosDeExplotacionEInversionesMaterialesEIntangiblesFinanciados_b8d8e97b-808f-413c-9c45-2b27709dfe2c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_PagosPorInversionesFinancierasNoIncluidasEnEquivalentesDeEfectivo_1452933c-4112-4878-8eee-be2dabf88ccd" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_PagosPorInversionesFinancierasNoIncluidasEnEquivalentesDeEfectivo"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherCashPaymentsToAcquireEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherCashPaymentsToAcquireEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_OtherCashPaymentsToAcquireEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities" xlink:to="loc_tef_PagosPorInversionesFinancierasNoIncluidasEnEquivalentesDeEfectivo_1452933c-4112-4878-8eee-be2dabf88ccd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_ParticipacionEnPerdidasGananciasImputadasDirectamenteAlPatrimonioNetoAsociadasYOtros_1c69e554-04fa-454d-9de4-c6bf48ed14e3" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_ParticipacionEnPerdidasGananciasImputadasDirectamenteAlPatrimonioNetoAsociadasYOtros"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossBeforeTax" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossBeforeTax" xlink:to="loc_tef_ParticipacionEnPerdidasGananciasImputadasDirectamenteAlPatrimonioNetoAsociadasYOtros_1c69e554-04fa-454d-9de4-c6bf48ed14e3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_PerdidasGananciasActuarialesYEfectoDelLimiteDelActivoPorPlanesDePrestacionDefinida_ba50b0f2-94f9-43e3-bf21-87cd36765593" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_PerdidasGananciasActuarialesYEfectoDelLimiteDelActivoPorPlanesDePrestacionDefinida"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans" xlink:to="loc_tef_PerdidasGananciasActuarialesYEfectoDelLimiteDelActivoPorPlanesDePrestacionDefinida_ba50b0f2-94f9-43e3-bf21-87cd36765593" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_ProductoDeCompraPropiedadPlantaYEquipoYActivosIntangiblesClasificadosComoActividadesDeInversion_007e6f56-2ee5-464a-8a1d-35431fa02b26" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_ProductoDeCompraPropiedadPlantaYEquipoYActivosIntangiblesClasificadosComoActividadesDeInversion"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:to="loc_tef_ProductoDeCompraPropiedadPlantaYEquipoYActivosIntangiblesClasificadosComoActividadesDeInversion_007e6f56-2ee5-464a-8a1d-35431fa02b26" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_ProductoDeCompraPropiedadPlantaYEquipoYActivosIntangiblesClasificadosComoActividadesDeInversion_007e6f56-2ee5-464a-8a1d-35431fa02b26" xlink:to="loc_ifrs-full_ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromSalesOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProceedsFromSalesOfIntangibleAssetsClassifiedAsInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_ProductoDeCompraPropiedadPlantaYEquipoYActivosIntangiblesClasificadosComoActividadesDeInversion_007e6f56-2ee5-464a-8a1d-35431fa02b26" xlink:to="loc_ifrs-full_ProceedsFromSalesOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_ProductoDeCompraPropiedadPlantaYEquipoYActivosIntangiblesClasificadosComoActividadesDeInversion_007e6f56-2ee5-464a-8a1d-35431fa02b26" xlink:to="loc_ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_tef_ProductoDeCompraPropiedadPlantaYEquipoYActivosIntangiblesClasificadosComoActividadesDeInversion_007e6f56-2ee5-464a-8a1d-35431fa02b26" xlink:to="loc_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_tef_ReclasificacionRelacionadaConLaParticipacionEnLasGananciasPerdidasReconocidasDirectamenteEnElPatrimonioDeAsociadasYOtros_7af7f8a2-bb29-4f65-90f5-136cd19aa3f9" xlink:href="549300EEJH4FEPDBBR25-2020-12-31.xsd#tef_ReclasificacionRelacionadaConLaParticipacionEnLasGananciasPerdidasReconocidasDirectamenteEnElPatrimonioDeAsociadasYOtros"/>
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="loc_ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossBeforeTax" xlink:to="loc_tef_ReclasificacionRelacionadaConLaParticipacionEnLasGananciasPerdidasReconocidasDirectamenteEnElPatrimonioDeAsociadasYOtros_7af7f8a2-bb29-4f65-90f5-136cd19aa3f9" xlink:type="arc" order="1"/>
  </link:definitionLink>
</link:linkbase>
