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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2022-08-10</periodOfReport>

    <dateOfOriginalSubmission>2022-08-12</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001737927</issuerCik>
        <issuerName>Canopy Growth Corp</issuerName>
        <issuerTradingSymbol>CGC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001886836</rptOwnerCik>
            <rptOwnerName>Gedeon Christelle</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CANOPY GROWTH CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>1 HERSHEY DRIVE</rptOwnerStreet2>
            <rptOwnerCity>SMITHS FALLS</rptOwnerCity>
            <rptOwnerState>A6</rptOwnerState>
            <rptOwnerZipCode>K7A 0A8</rptOwnerZipCode>
            <rptOwnerStateDescription>ONTARIO, CANADA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>See Remarks</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>3.70</value>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2022-08-10</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>262162</value>
                    <footnoteId id="F3"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <value>2028-08-10</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common
Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>262162</value>
                    <footnoteId id="F3"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>262162</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Prices are expressed in Canadian dollars.</footnote>
        <footnote id="F2">The options vest in three equal, annual installments on the first, second and third anniversaries of the grant date of August 10, 2022</footnote>
        <footnote id="F3">On August 12, 2022, the reporting person filed a Form 4 which incorrectly included in Table II, Box 5, 131,081 stock options acquired on August 10, 2022, in Table II, Box 7, 131,081 underlying securities and in Table II, Box 9, 131,081 number of derivative securities beneficially owned following the reported transaction.  The actual number of stock options acquired on August 10, 2022 was 262,162.  As such, this Form 4/A corrects Table II, Boxes 5, 7 and 9 to reflect the correct number of stock options acquired, the correct number of underlying securities and the correct number of derivative securities beneficially owned following the reported transaction.</footnote>
    </footnotes>

    <remarks>Chief Legal Officer and Corporate Secretary</remarks>

    <ownerSignature>
        <signatureName>/s/ Shai Marshall, as attorney-in-fact for Christelle Gedeon</signatureName>
        <signatureDate>2022-08-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
