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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2015-07-01</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001348911</issuerCik>
        <issuerName>Carbylan Therapeutics, Inc.</issuerName>
        <issuerTradingSymbol>CBYL</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001650104</rptOwnerCik>
            <rptOwnerName>Ramiya Premchandran</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CARBYLAN THERAPEUTICS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>3181 PORTER DRIVE</rptOwnerStreet2>
            <rptOwnerCity>PALO ALTO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94304</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Vice President of Supply Chain</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <footnotes></footnotes>

    <remarks>Exhibit List

Exhibit 24 - Limited Power of Attorney</remarks>

    <ownerSignature>
        <signatureName>/s/ David J. Saul, Attorney-in-Fact</signatureName>
        <signatureDate>2015-08-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
