<?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>0001885905</rptOwnerCik>
            <rptOwnerName>Kim Jin Goon</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O TLGY SPONSORS #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>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Executive Officer</officerTitle>
        </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>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </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 (the &quot;Sponsor&quot;) for no consideration depending on the extent to which the underwriters' over-allotment option is exercised.</footnote>
        <footnote id="F4">The Sponsor is the record holder of the shares reported herein. Jin-Goon Kim is the manager of TLGY Holdings LLC, which is the manager of the Sponsor, and therefore, the shares beneficially owned by the Sponsor may be deemed to be beneficially owned by Jin-Goon Kim. Jin-Goon Kim disclaims beneficial ownership of the shares held of record by the Sponsor, except to the extent of any pecuniary interest therein.</footnote>
    </footnotes>

    <remarks></remarks>

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