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  <element id="cmcsa_DebtOfUnconsolidatedVie" name="DebtOfUnconsolidatedVie" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="cmcsa_CollateralLiabilityForUnconsolidatedSubsidiaryDebt" name="CollateralLiabilityForUnconsolidatedSubsidiaryDebt" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="cmcsa_ReclassificationsOfPriorYearAmountsPolicyTextBlock" name="ReclassificationsOfPriorYearAmountsPolicyTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_BusinessAcquisitionPurchasePriceAllocationInvestments" name="BusinessAcquisitionPurchasePriceAllocationInvestments" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="cmcsa_DirectTransactionCosts" name="DirectTransactionCosts" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="cmcsa_TransactionCostsAndTransactionRelatedCostsInOperatingCostsAndExpenses" name="TransactionCostsAndTransactionRelatedCostsInOperatingCostsAndExpenses" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="cmcsa_TransactionCostsInInterestExpense" name="TransactionCostsInInterestExpense" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="cmcsa_TotalTransactionCostsAndTransactionRelatedCosts" name="TotalTransactionCostsAndTransactionRelatedCosts" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="cmcsa_NonUSRevenue" name="NonUSRevenue" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="cmcsa_NoncontrollingInterestIncreaseDecreaseRelatedToAcquisition" name="NoncontrollingInterestIncreaseDecreaseRelatedToAcquisition" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="cmcsa_ParentOwnershipPercentageInHoldingCompanySubsidiaries" name="ParentOwnershipPercentageInHoldingCompanySubsidiaries" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_SupplementalFinancialInformationAbstract" name="SupplementalFinancialInformationAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="cmcsa_ScheduleOfFilmAndTelevisionCostsTableTextBlock" name="ScheduleOfFilmAndTelevisionCostsTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_BusinessAcquisitionProFormaProfitLoss" name="BusinessAcquisitionProFormaProfitLoss" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="cmcsa_BusinessAcquisitionPurchasePriceAllocationWorkingCapital" name="BusinessAcquisitionPurchasePriceAllocationWorkingCapital" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="cmcsa_BusinessAcquisitionPurchasePriceAllocationOtherNoncurrentAssetsAndLiabilities" name="BusinessAcquisitionPurchasePriceAllocationOtherNoncurrentAssetsAndLiabilities" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="cmcsa_BusinessAcquisitionPurchasePriceAllocationNonControllingInterestAcquired" name="BusinessAcquisitionPurchasePriceAllocationNonControllingInterestAcquired" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="cmcsa_InvestmentSummaryTableTextBlock" name="InvestmentSummaryTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_ComponentsOfInvestmentIncomeLossNetTableTextBlock" name="ComponentsOfInvestmentIncomeLossNetTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_PreAmendmentRevolvingCreditFacilityMember" name="PreAmendmentRevolvingCreditFacilityMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_AmountOfGainLossRecognizedInIncomeFairValueHedgesTableTextBlock" name="AmountOfGainLossRecognizedInIncomeFairValueHedgesTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_AmountOfGainLossRecognizedInIncomeNonDesignatedTableTextBlock" name="AmountOfGainLossRecognizedInIncomeNonDesignatedTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_RecognizedShareBasedCompensationExpenseTableTextBlock" name="RecognizedShareBasedCompensationExpenseTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_CableCommunicationsSegmentRevenuePercentageFranchiseAndOtherRegulatoryFeesMember" name="CableCommunicationsSegmentRevenuePercentageFranchiseAndOtherRegulatoryFeesMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_CableCommunicationsSegmentRevenuePercentageVideoMember" name="CableCommunicationsSegmentRevenuePercentageVideoMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_CableCommunicationsSegmentRevenuePercentageHighSpeedInternetMember" name="CableCommunicationsSegmentRevenuePercentageHighSpeedInternetMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_CableCommunicationsSegmentRevenuePercentagePhoneMember" name="CableCommunicationsSegmentRevenuePercentagePhoneMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_CableCommunicationsSegmentRevenuePercentageAdvertisingMember" name="CableCommunicationsSegmentRevenuePercentageAdvertisingMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_CableCommunicationsSegmentRevenuePercentageBusinessServiceMember" name="CableCommunicationsSegmentRevenuePercentageBusinessServiceMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_CableCommunicationsSegmentRevenuePercentageOtherMember" name="CableCommunicationsSegmentRevenuePercentageOtherMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_PostAmendmentRevolvingCreditFacilityMember" name="PostAmendmentRevolvingCreditFacilityMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_OperatingCostAndExpense" name="OperatingCostAndExpense" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="cmcsa_TransactionCostsInOtherIncomeExpense" name="TransactionCostsInOtherIncomeExpense" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="cmcsa_FairValueOfEmbeddedDerivativeLiabilityComponentOfPrepaidForwardSalesAgreements" name="FairValueOfEmbeddedDerivativeLiabilityComponentOfPrepaidForwardSalesAgreements" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="cmcsa_ChangesInEquityResultingFromNetIncomeAttributableToParentAndTransfersToOrFromNoncontrollingInterestsTableTextBlock" name="ChangesInEquityResultingFromNetIncomeAttributableToParentAndTransfersToOrFromNoncontrollingInterestsTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_CableCommunicationsTechnicalLabor" name="CableCommunicationsTechnicalLabor" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="cmcsa_CableCommunicationsCustomerService" name="CableCommunicationsCustomerService" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="cmcsa_OtherOperatingCostsAndExpenses" name="OtherOperatingCostsAndExpenses" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="cmcsa_NumberOfCollectiveBargainingAgreementsExpiredOrScheduleToExpireByEndOfYear" name="NumberOfCollectiveBargainingAgreementsExpiredOrScheduleToExpireByEndOfYear" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_NumberOfEmployeesCoveredUnderCollectiveBargainingAgreementsExpiredOrScheduleToExpireByEndOfYear" name="NumberOfEmployeesCoveredUnderCollectiveBargainingAgreementsExpiredOrScheduleToExpireByEndOfYear" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_CableCommunicationsSegmentRevenueTypesAsPercentageOfTotalCableCommunicationsRevenue" name="CableCommunicationsSegmentRevenueTypesAsPercentageOfTotalCableCommunicationsRevenue" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_CableCommunicationsSegmentRevenueSourcesTableTextBlock" name="CableCommunicationsSegmentRevenueSourcesTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_AggregatePrincipalAmountOfNotesOutstandingAfterRedemption" name="AggregatePrincipalAmountOfNotesOutstandingAfterRedemption" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="cmcsa_IncreaseInAdditionalPaidInCapitalResultingFromPurchaseOfNoncontrollingInterestRounded" name="IncreaseInAdditionalPaidInCapitalResultingFromPurchaseOfNoncontrollingInterestRounded" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
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  <element id="cmcsa_AndETelevisionNetworksMember" name="AndETelevisionNetworksMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_EightPointEightSevenFiveSeniorNotesDueInTwoThousandFifteenMember" name="EightPointEightSevenFiveSeniorNotesDueInTwoThousandFifteenMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_TenPointEightSevenFiveSeniorSubordinatedNotesDueInTwoThousandSixteenMember" name="TenPointEightSevenFiveSeniorSubordinatedNotesDueInTwoThousandSixteenMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_AllocationOfPurchasePriceToAssetsAndLiabilitiesTable" name="AllocationOfPurchasePriceToAssetsAndLiabilitiesTable" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" xbrli:periodType="duration" />
  <element id="cmcsa_ParentsCashOrCommonStockFundingCommitmentForEachOfNoncontrollingInvestorsTwoRedemptionRights" name="ParentsCashOrCommonStockFundingCommitmentForEachOfNoncontrollingInvestorsTwoRedemptionRights" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="cmcsa_CostMethodInvestmentTypeDomain" name="CostMethodInvestmentTypeDomain" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_ComcastContentBusinessMember" name="ComcastContentBusinessMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_CommercialPaperToBeIssuedAtAnyOneTimeMaximum" name="CommercialPaperToBeIssuedAtAnyOneTimeMaximum" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="cmcsa_NBCUniversalAcquiredBusinessesMember" name="NBCUniversalAcquiredBusinessesMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_FilmCostsAndTelevisionCostsLineItems" name="FilmCostsAndTelevisionCostsLineItems" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="cmcsa_ScheduleOfDebtRepaymnetsTableTextBlock" name="ScheduleOfDebtRepaymnetsTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_UcdpTermLoanMember" name="UcdpTermLoanMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_EightPointEightSevenFivePercentNoteDueTwoThousandFifteenMember" name="EightPointEightSevenFivePercentNoteDueTwoThousandFifteenMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_TenPointEightSevenFivePercentNotesDueTwoThousandSixteenMember" name="TenPointEightSevenFivePercentNotesDueTwoThousandSixteenMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_UniversalCityDevelopmentPartnersTermLoanMember" name="UniversalCityDevelopmentPartnersTermLoanMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAndNoncontrollingInterestsAcquired" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAndNoncontrollingInterestsAcquired" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
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  <element id="cmcsa_RevolvingCreditFacilityBorrowingsUsedInConnectionWithTransaction" name="RevolvingCreditFacilityBorrowingsUsedInConnectionWithTransaction" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
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  <element id="cmcsa_NoncontrollingInterestDecreaseFromRedemptionsOrPurchaseOfInterests" name="NoncontrollingInterestDecreaseFromRedemptionsOrPurchaseOfInterests" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
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  <element id="cmcsa_StationVentureSeniorSecuredNoteDueInTwoThousandTwentyThreeMember" name="StationVentureSeniorSecuredNoteDueInTwoThousandTwentyThreeMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_ComcastConsolidatedWithoutNbcuniversalAndUcdpMember" name="ComcastConsolidatedWithoutNbcuniversalAndUcdpMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_NbcuniversalAndUcdpMember" name="NbcuniversalAndUcdpMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
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  <element id="cmcsa_ScheduleOfIntangibleAssetsLineItems" name="ScheduleOfIntangibleAssetsLineItems" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="cmcsa_IncreaseInAdditionalPaidInCapitalFromIssuanceOfNoncontrollingEquityInterest" name="IncreaseInAdditionalPaidInCapitalFromIssuanceOfNoncontrollingEquityInterest" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="cmcsa_IncreaseInAdditionalPaidInCapitalResultingFromPurchaseOfNoncontrollingInterest" name="IncreaseInAdditionalPaidInCapitalResultingFromPurchaseOfNoncontrollingInterest" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
</schema>
</XBRL>
