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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2020-12-31</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001561921</issuerCik>
        <issuerName>TELA Bio, Inc.</issuerName>
        <issuerTradingSymbol>TELA</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001746777</rptOwnerCik>
            <rptOwnerName>EW HEALTHCARE PARTNERS FUND 2, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>21 WATERWAY AVENUE, SUITE 225</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>THE WOODLANDS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77380</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>See footnotes 1 and 2</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001746779</rptOwnerCik>
            <rptOwnerName>EW HEALTHCARE PARTNERS FUND 2-A, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>21 WATERWAY AVENUE, SUITE 225</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>THE WOODLANDS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77380</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>See footnotes 1 and 2</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001793943</rptOwnerCik>
            <rptOwnerName>EW Healthcare Partners Fund 2 GP, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>21 WATERWAY AVENUE, SUITE 225</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>THE WOODLANDS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77380</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001793948</rptOwnerCik>
            <rptOwnerName>EW Healthcare Partners Fund 2-UGP, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>21 WATERWAY AVENUE, SUITE 225</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>THE WOODLANDS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77380</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, $0.001 per share</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>599853</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, $0.001 per share</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>875440</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, $0.001 per share</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1475293</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, $0.001 per share</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1475293</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">EW Healthcare Partners Fund 2, L.P., is the holder of 599,853 shares and EW Healthcare Partners Fund 2-A, L.P., is the holder of 875,440 shares of the Issuer. EW Healthcare Partners Fund 2 GP, L.P. (the &quot;EW Funds GP&quot;), is the general partner of each of EW Healthcare Partners Fund 2, L.P. (&quot;Fund 2&quot;) and EW Healthcare Partners Fund 2-A, L.P. (&quot;EW Fund 2-A&quot; and together with EW Fund 2, the &quot;EW Funds&quot;).  EW Healthcare Partners Fund 2-UGP, LLC (the &quot;General Partner&quot;) is the general partner of EW Funds GP. The General Partner holds sole voting and dispositive power over the shares held by each of the EW Funds (the &quot;Shares&quot;). The managers of the General Partner are Martin P. Sutter, Ron Eastman, Scott Barry and Petri Vainio (collectively, the &quot;Managers&quot;) and may exercise voting and investment control over the Shares only by majority action of the Managers.</footnote>
        <footnote id="F2">Each individual Manager and the General Partner disclaims beneficial ownership over the Shares except to the extent of his or its respective pecuniary interest therein.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>EW HEALTHCARE PARTNERS FUND 2, L.P., By: EW Healthcare Partners Fund 2 GP, L.P., its General Partner, By: EW Healthcare Partners Fund 2-UGP, LLC, its General Partner, By: Martin P. Sutter, Attorney-in-Fact, /s/ Martin P. Sutter</signatureName>
        <signatureDate>2021-02-15</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>EW HEALTHCARE PARTNERS FUND 2-A, L.P., By: EW Healthcare Partners Fund 2 GP, L.P., its General Partner, By: EW Healthcare Partners Fund 2-UGP, LLC, its General Partner, By: Martin P. Sutter, Attorney-in-Fact, /s/ Martin P. Sutter</signatureName>
        <signatureDate>2021-02-15</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>EW HEALTHCARE PARTNERS FUND 2 GP, L.P., By: EW Healthcare Partners Fund 2-UGP, LLC, its General Partner, By: Martin P. Sutter, Attorney-in-Fact, /s/ Martin P. Sutter</signatureName>
        <signatureDate>2021-02-15</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>EW HEALTHCARE PARTNERS FUND 2-UGP, LLC, By: Martin P. Sutter, Attorney-in-Fact, /s/ Martin P. Sutter</signatureName>
        <signatureDate>2021-02-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
