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    </xs:appinfo>
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  <xs:element id="cmcsa_OtherComprehensiveIncomeLossDefinedBenefitPlanAndOtherAfterReclassificationAdjustmentAfterTax" abstract="false" name="OtherComprehensiveIncomeLossDefinedBenefitPlanAndOtherAfterReclassificationAdjustmentAfterTax" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="cmcsa_ExchangeableSubordinatedDebentures2.0PercentDue2029Member" abstract="true" name="ExchangeableSubordinatedDebentures2.0PercentDue2029Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="cmcsa_VariableInterestEntityReportingEntityInvolvementUnfundedCapitalCommitment" abstract="false" name="VariableInterestEntityReportingEntityInvolvementUnfundedCapitalCommitment" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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</xs:schema>
