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<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-01-19</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001783317</issuerCik>
        <issuerName>McAfee Corp.</issuerName>
        <issuerTradingSymbol>MCFE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001829061</rptOwnerCik>
            <rptOwnerName>Hicks Terry</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>6220 AMERICA CENTER DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAN JOSE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95002</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>See Remarks</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

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                <value>Class A Common Stock</value>
            </securityTitle>
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            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
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                <transactionCode>M</transactionCode>
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            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>17772</value>
                </transactionShares>
                <transactionPricePerShare>
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                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
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                    <value>17772</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>6514</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>18.51</value>
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                </transactionAcquiredDisposedCode>
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                    <value>11258</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
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                <directOrIndirectOwnership>
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                </directOrIndirectOwnership>
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                <transactionPricePerShare>
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                <transactionPricePerShare>
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            <transactionTimeliness>
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            </transactionTimeliness>
            <transactionAmounts>
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                </transactionShares>
                <transactionPricePerShare>
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                </transactionPricePerShare>
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                </underlyingSecurityTitle>
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                    <value>5848</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
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                <sharesOwnedFollowingTransaction>
                    <value>64328</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
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                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
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            <transactionDate>
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            <deemedExecutionDate></deemedExecutionDate>
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                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>150000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
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            <exerciseDate>
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            <underlyingSecurity>
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        <derivativeTransaction>
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                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
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                    <value>31364</value>
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                <transactionPricePerShare>
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            <expirationDate>
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                    <value>31364</value>
                </sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
                    <value>D</value>
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        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Units</value>
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            <conversionOrExercisePrice>
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                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
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            <transactionAmounts>
                <transactionShares>
                    <value>9540</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
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                <transactionAcquiredDisposedCode>
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            <expirationDate>
                <footnoteId id="F7"/>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>9540</value>
                </underlyingSecurityShares>
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                <sharesOwnedFollowingTransaction>
                    <value>9540</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Management Incentive Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>6.021</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2021-01-20</value>
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            <deemedExecutionDate></deemedExecutionDate>
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                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
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            <transactionAmounts>
                <transactionShares>
                    <value>794916</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
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                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
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            <exerciseDate>
                <footnoteId id="F8"/>
                <footnoteId id="F9"/>
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            <expirationDate>
                <footnoteId id="F8"/>
            </expirationDate>
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                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>794916</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
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                <sharesOwnedFollowingTransaction>
                    <value>794916</value>
                </sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
                    <value>D</value>
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        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Reflects shares of the Issuer's Class A common stock received upon vesting of an equal number of restricted stock units (&quot;RSUs&quot;).</footnote>
        <footnote id="F2">Reflects withholding of shares of the Issuer's Class A common stock upon vesting of RSUs to satisfy the Reporting Person's tax withholding obligation, based on the last reported sale price of the Issuer's Class A common stock on January 15, 2021.</footnote>
        <footnote id="F3">Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock.</footnote>
        <footnote id="F4">The remaining RSUs vest in seven equal quarterly installments beginning on March 31, 2021.</footnote>
        <footnote id="F5">The remaining RSUs vest in seven equal quarterly installments beginning on March 31, 2021.</footnote>
        <footnote id="F6">The remaining RSUs vest in eleven equal quarterly installments beginning on March 31, 2021.</footnote>
        <footnote id="F7">On January 20, 2021, the Issuer amended the terms of previously granted performance-based RSUs. As amended, these RSUs vest (i) in full upon the satisfaction of certain performance criteria related returns achieved by certain of the Issuer's stockholders (inclusive of dividends) or (ii) if such performance criteria have not been satisfied prior thereto, in three equal annual installments beginning on October 21, 2021.</footnote>
        <footnote id="F8">Reflects Management Incentive Units of Foundation Technology Worldwide LLC (&quot;MIUs&quot;) which are profits interests that are economically similar to stock-settled stock options. Vested MIUs are exchangeable, at the holder's election, for a number of shares of Class A Common Stock equal in value to the &quot;spread value&quot; represented by the excess of the value of shares of Class A Common Stock at the time of exchange above the &quot;return threshold&quot; associated with the MIUs, multiplied by the number of MIUs being exchanged. The number reflected in Table II reflects the number of MIUs held by the Reporting Person. The MIUs do not have an expiration date.</footnote>
        <footnote id="F9">On January 20, 2021, the Issuer amended the terms of previously granted performance-based MIUs. As amended, these MIUs vest (i) in full upon the satisfaction of certain performance criteria related returns achieved by certain of the Issuer's stockholders (inclusive of dividends) or (ii) if such performance criteria have not been satisfied prior thereto, in three equal annual installments beginning on October 21, 2021.</footnote>
    </footnotes>

    <remarks>Executive Vice President and General Manager, Consumer Business. Mr. Ross is signing on behalf of the Reporting Person pursuant to a Limited Power of Attorney dated October 21 2020, which was previously filed with the Securities and Exchange Commission.</remarks>

    <ownerSignature>
        <signatureName>/s/ Jared Ross, as Attorney-in-Fact</signatureName>
        <signatureDate>2021-01-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
