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

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-12-31</periodOfReport>

    <issuer>
        <issuerCik>0001293282</issuerCik>
        <issuerName>TechTarget Inc</issuerName>
        <issuerTradingSymbol>TTGT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001082906</rptOwnerCik>
            <rptOwnerName>HOAG JAY C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O TECHNOLOGY CROSSOVER VENTURES</rptOwnerStreet1>
            <rptOwnerStreet2>528 RAMONA STREET</rptOwnerStreet2>
            <rptOwnerCity>PALO ALTO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94301</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>May be part of 13(d) group</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001197937</rptOwnerCik>
            <rptOwnerName>KIMBALL RICK</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O TECHNOLOGY CROSSOVER VENTURES</rptOwnerStreet1>
            <rptOwnerStreet2>528 RAMONA STREET</rptOwnerStreet2>
            <rptOwnerCity>PALO ALTO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94301</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>May be part of 13(d) group</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001188456</rptOwnerCik>
            <rptOwnerName>DREW JOHN</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O TECHNOLOGY CROSSOVER VENTURES</rptOwnerStreet1>
            <rptOwnerStreet2>528 RAMONA STREET</rptOwnerStreet2>
            <rptOwnerCity>PALO ALTO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94301</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>May be part of 13(d) group</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001188444</rptOwnerCik>
            <rptOwnerName>REYNOLDS JON Q JR</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O TECHNOLOGY CROSSOVER VENTURES</rptOwnerStreet1>
            <rptOwnerStreet2>528 RAMONA STREET</rptOwnerStreet2>
            <rptOwnerCity>PALO ALTO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94301</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>May be part of 13(d) group</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001188458</rptOwnerCik>
            <rptOwnerName>GRIFFITH WILLIAM</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O TECHNOLOGY CROSSOVER VENTURES</rptOwnerStreet1>
            <rptOwnerStreet2>528 RAMONA STREET</rptOwnerStreet2>
            <rptOwnerCity>PALO ALTO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94301</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>May be part of 13(d) group</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2009-12-31</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>8792</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>8792</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Jay C. Hoag</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>12874</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>TCV Management 2004, L.L.C.</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>12150808</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>TCV V, L.P.</value>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>231106</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>TCV Member Fund, L.P.</value>
                    <footnoteId id="F5"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">These shares were issued as director compensation under the TechTarget, Inc., 2007 Stock Option and Incentive Plan; the number of shares is determined by dividing the accrued director's fees by the closing price of the issuer's shares on 12/31/2009.</footnote>
        <footnote id="F2">These shares are directly held by Jay C. Hoag (&quot;Hoag&quot;). Hoag has sole dispositive power over the shares, however, TCV Management 2004, L.L.C. (&quot;TCM 2004&quot;) owns 100% of the pecuniary interest therein. Hoag, Richard H. Kimball, John L. Drew, Jon Q. Reynolds, Jr., and William J.G. Griffith IV (collectively, the &quot;TCM 2004 Members&quot;) are members of TCM 2004, but each disclaim beneficial ownership of such shares except to the extent of their pecuniary interest therein.</footnote>
        <footnote id="F3">These shares are directly held by TCM 2004.  The TCM 2004 Members are members of TCM 2004 but disclaim beneficial ownership of such shares except to the extent of their pecuniary interest therein.</footnote>
        <footnote id="F4">These shares are directly held by TCV V, L.P.  Each of the TCM 2004 Members are Class A Members of Technology Crossover Management V, L.L.C. (&quot;TCM V&quot;) which is the general partner of TCV V, L.P. The TCM 2004 Members and TCM V may be deemed to beneficially own the shares held by TCV V, L.P., but the TCM 2004 Members and TCM V disclaim beneficial ownership of such shares except to the extent of their pecuniary interest therein.</footnote>
        <footnote id="F5">These shares are directly held by TCV Member Fund, L.P.  Each of the TCM 2004 Members is (i) a Class A Member of TCM V which is a general partner of TCV Member Fund, L.P. and (ii) a limited partner of TCV Member Fund, L.P.  The TCM 2004 Members and TCM V may be deemed to beneficially own the shares held by TCV Member Fund, L.P., but the TCM 2004 Members and TCM V disclaim beneficial ownership of such shares except to the extent of their pecuniary interest therein.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Frederic D. Fenton  Authorized signatory for Jay C. Hoag</signatureName>
        <signatureDate>2010-01-05</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Frederic D. Fenton  Authorized signatory for Richard H. Kimball</signatureName>
        <signatureDate>2010-01-05</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Frederic D. Fenton  Authorized signatory for John L. Drew</signatureName>
        <signatureDate>2010-01-05</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Frederic D. Fenton  Authorized signatory for Jon Q. Reynolds, Jr.</signatureName>
        <signatureDate>2010-01-05</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Frederic D. Fenton  Authorized signatory for William J.G. Griffith IV</signatureName>
        <signatureDate>2010-01-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
