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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-11-30</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001879814</issuerCik>
        <issuerName>TLGY Acquisition Corp</issuerName>
        <issuerTradingSymbol>TLGY</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001879831</rptOwnerCik>
            <rptOwnerName>TLGY Sponsors LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>#601 YUEXIU BUILDING</rptOwnerStreet1>
            <rptOwnerStreet2>160-174 LOCKHART RD, WANCHAI</rptOwnerStreet2>
            <rptOwnerCity>HONG KONG</rptOwnerCity>
            <rptOwnerState>K3</rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription>HONG KONG</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Class B Ordinary Shares</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2021-11-30</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>718750</value>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Ordinary Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>718750</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5750000</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">As described in the registration statement on Form S-1 (File No. 333-260242) of TLGY Acquisition Corporation (the &quot;Issuer&quot;), as amended, under the heading Description of Securities --Founder Shares,&quot; the Class B ordinary shares, par value $0.0001 per share, of the Issuer (the &quot;Class B Ordinary Shares&quot;) will automatically convert into Class A ordinary shares, par value $0.0001 per share, of the Issuer at the time of, or immediately following, the Issuer's initial business combination, on a one-for-one basis, subject to certain adjustments, and have no expiration date.</footnote>
        <footnote id="F2">On November 30, 2021, the Issuer effected an issuance of 718,750 Class B Ordinary Shares at par in connection with the upsized initial public offering.</footnote>
        <footnote id="F3">The Class B Ordinary Shares beneficially owned by the Reporting Person include up to 750,000 Class B Ordinary Shares that will be surrendered by TLGY Sponsors LLC for no consideration depending on the extent to which the underwriters' over-allotment option is exercised.</footnote>
    </footnotes>

    <remarks>Jin-Goon Kim is the manager of TLGY Holdings LLC, which is the manager of TLGY Sponsors LLC.</remarks>

    <ownerSignature>
        <signatureName>/s/ Jin-Goon Kim</signatureName>
        <signatureDate>2021-12-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
