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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2021-11-19</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001676238</issuerCik>
        <issuerName>Braze, Inc.</issuerName>
        <issuerTradingSymbol>BRZE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001864753</rptOwnerCik>
            <rptOwnerName>ICONIQ Strategic Partners VI, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ICONIQ CAPITAL</rptOwnerStreet1>
            <rptOwnerStreet2>394 PACIFIC AVENUE, 2ND FLOOR</rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94111</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001864759</rptOwnerCik>
            <rptOwnerName>ICONIQ Strategic Partners VI-B, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ICONIQ CAPITAL</rptOwnerStreet1>
            <rptOwnerStreet2>394 PACIFIC AVENUE, 2ND FLOOR</rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94111</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001864748</rptOwnerCik>
            <rptOwnerName>ICONIQ Strategic Partners VI GP, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ICONIQ CAPITAL</rptOwnerStreet1>
            <rptOwnerStreet2>394 PACIFIC AVENUE, 2ND FLOOR</rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94111</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001889266</rptOwnerCik>
            <rptOwnerName>ICONIQ Strategic Partners VI TT GP, Ltd.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ICONIQ CAPITAL</rptOwnerStreet1>
            <rptOwnerStreet2>394 PACIFIC AVENUE, 2ND FLOOR</rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94111</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>144576</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F4"/>
                    <footnoteId id="F5"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>180424</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                    <footnoteId id="F5"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By ICONIQ Strategic Partners VI-B, L.P.</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">These shares were purchased from the underwriters at the closing of the Issuer's initial public offering.</footnote>
        <footnote id="F2">The shares are held by ICONIQ Strategic Partners VI, L.P. (&quot;ICONIQ VI&quot;).</footnote>
        <footnote id="F3">The shares are held by ICONIQ Strategic Partners VI-B, L.P. (&quot;ICONIQ VI-B&quot;).</footnote>
        <footnote id="F4">ICONIQ Strategic Partners VI GP, L.P. (&quot;ICONIQ VI GP&quot;) is the sole general partner of each of ICONIQ VI and ICONIQ VI-B. ICONIQ Strategic Partners VI TT GP, Ltd. (&quot;ICONIQ VI Parent GP&quot;) is the sole general partner of ICONIQ VI GP. Divesh Makan (&quot;Makan&quot;), William J.G. Griffith (&quot;Griffith&quot;) and Matthew Jacobson (&quot;Jacobson&quot;) are the sole equity holders of ICONIQ VI Parent GP.</footnote>
        <footnote id="F5">Each of ICONIQ VI GP, ICONIQ VI Parent GP, Makan, Griffith and Jacobson disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the &quot;Exchange Act&quot;), except to the extent of its or his pecuniary interest therein, if any. This report shall not be deemed an admission that any of the Reporting Persons is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>ICONIQ Strategic Partners VI, L.P., By: ICONIQ Strategic Partners VI GP, L.P., By: ICONIQ Strategic Partners VI TT GP, Ltd., By: Kevin Foster, Title: Authorized Signatory, /s/ Kevin Foster</signatureName>
        <signatureDate>2021-11-23</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>ICONIQ Strategic Partners VI-B, L.P., By: ICONIQ Strategic Partners VI GP, L.P., By: ICONIQ Strategic Partners VI TT GP, Ltd., By: Kevin Foster, Title: Authorized Signatory, /s/ Kevin Foster</signatureName>
        <signatureDate>2021-11-23</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>ICONIQ Strategic Partners VI GP, L.P., ICONIQ Strategic Partners VI TT GP, Ltd., By: Kevin Foster, Title: Authorized Signatory, /s/ Kevin Foster</signatureName>
        <signatureDate>2021-11-23</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>ICONIQ Strategic Partners VI TT GP, Ltd., By: Kevin Foster, Title: Authorized Signatory, /s/ Kevin Foster</signatureName>
        <signatureDate>2021-11-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
