<SUBMISSION>
<ACCESSION-NUMBER>0001179110-05-016460
<TYPE>3
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20050721
<FILING-DATE>20050816
<DATE-OF-FILING-DATE-CHANGE>20050816
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>Chesnais Alain-Marie
<CIK>0001336309
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>3
<ACT>34
<FILE-NUMBER>001-32600
<FILM-NUMBER>051030552
</FILING-VALUES>
<BUSINESS-ADDRESS>
<PHONE>416-535-0123
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>96 MOWAT AVENUE
<CITY>TORONTO
<STATE>A6
<ZIP>M6K 3M1
</MAIL-ADDRESS>
</REPORTING-OWNER>
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>TUCOWS INC /PA/
<CIK>0000909494
<ASSIGNED-SIC>7374
<IRS-NUMBER>232707366
<STATE-OF-INCORPORATION>PA
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>96 MOWAT AVENUE
<CITY>TORONTO
<STATE>A6
<ZIP>M6K 3M1
<PHONE>4165350123
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>96 MOWAT AVENUE
<CITY>TORONTO
<STATE>A6
<ZIP>M6K 3M1
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>INFONAUTICS INC
<DATE-CHANGED>19960426
</FORMER-COMPANY>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>INFONAUTICS CORP
<DATE-CHANGED>19960315
</FORMER-COMPANY>
</ISSUER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 3 -
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2005-07-21</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000909494</issuerCik>
        <issuerName>TUCOWS INC /PA/</issuerName>
        <issuerTradingSymbol>TCX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001336309</rptOwnerCik>
            <rptOwnerName>Chesnais Alain-Marie</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>96 MOWAT AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>TORONTO</rptOwnerCity>
            <rptOwnerState>A6</rptOwnerState>
            <rptOwnerZipCode>M6K 3M1</rptOwnerZipCode>
            <rptOwnerStateDescription>ONTARIO, CANADA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>VP Product Development</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <ownerSignature>
        <signatureName>/s/  Alain Chesnais</signatureName>
        <signatureDate>2005-08-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
