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  <element id="cmcsa_PeriodOfTimeForRedemptionOfRemainingNoncontrollingInvestorsInterestInNewCompany" name="PeriodOfTimeForRedemptionOfRemainingNoncontrollingInvestorsInterestInNewCompany" nillable="true" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_Aggregatecashorcommonstockfundingcommitmentfornoncontrollinginvestorstworedemptionrights" name="Aggregatecashorcommonstockfundingcommitmentfornoncontrollinginvestorstworedemptionrights" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="cmcsa_GainsOnSalesAndExchangesOfInvestmentsNet" name="GainsOnSalesAndExchangesOfInvestmentsNet" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="cmcsa_OtherInvestmentIncomeLossNet" name="OtherInvestmentIncomeLossNet" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="cmcsa_April2010BondOfferingMember" name="April2010BondOfferingMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_September2010BondOfferingMember" name="September2010BondOfferingMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_InterestRateSwapAgreementsMember" name="InterestRateSwapAgreementsMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_UnrealizedGainsLossesOnSecuritiesUnderlyingPrepaidForwardSaleAgreements" name="UnrealizedGainsLossesOnSecuritiesUnderlyingPrepaidForwardSaleAgreements" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="cmcsa_ZonesMember" name="ZonesMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_NondesignatedPrepaidForwardSaleAgreementsMember" name="NondesignatedPrepaidForwardSaleAgreementsMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_PrepaidForwardSaleAgreementsDerivativeComponentMember" name="PrepaidForwardSaleAgreementsDerivativeComponentMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cmcsa_PrepaidForwardSaleAgreementsSecuritiesMember" name="PrepaidForwardSaleAgreementsSecuritiesMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
</schema>
</XBRL>
