<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-10-26</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001829641</rptOwnerCik>
            <rptOwnerName>Intel Americas, Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O INTEL CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>2200 MISSION COLLEGE BOULEVARD</rptOwnerStreet2>
            <rptOwnerCity>SANTA CLARA</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95054</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000050863</rptOwnerCik>
            <rptOwnerName>INTEL CORP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2200 MISSION COLLEGE BOULEVARD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SANTA CLARA</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95054</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2020-10-26</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3788537</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>18.90</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5696831</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Intel Americas, Inc. directly holds and beneficially owns 5,696,831 shares of Class A common stock (&quot;Class A Shares&quot;) of McAfee Corp. (the &quot;Issuer&quot;). Intel Corporation may be deemed to beneficially own these securities due to its ownership of Intel Americas, Inc.</footnote>
    </footnotes>

    <remarks>The Reporting Persons are jointly filing this Form 4 pursuant to Rule 16a-3(j) under the Exchange Act.

Intel Americas, Inc. has entered into a Stockholders Agreement with certain persons who are owners of more than 10% of the Issuer's outstanding Class A Shares and may be deemed a member of a &quot;group&quot; (as such term is used under Section 13(d) of the Securities Exchange Act of 1934, as amended) with such persons.

Jeffrey P. Woolard, an officer of Intel Corporation, serves on the board of directors of the Issuer. For the purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each of Intel Corporation and Intel Americas, Inc. may be deemed a director by deputization with respect to the Issuer on the basis of Mr. Woolard's service on the Issuer's board of directors.</remarks>

    <ownerSignature>
        <signatureName>By: /s/ Tiffany D. Silva, Corporate Secretary of Intel Americas, Inc.</signatureName>
        <signatureDate>2020-10-28</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: /s/ Brian Petirs, Assistant Secretary of Intel Corporation</signatureName>
        <signatureDate>2020-10-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
