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

    <schemaVersion>X0603</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001486583</cik>
        <entityName>TSO3 Inc.</entityName>
        <issuerAddress>
            <street1>2505, AVENUE DALTON</street1>
            <city>QUEBEC</city>
            <stateOrCountry>A8</stateOrCountry>
            <zipCode>G1P 3S5</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>418-651-0003</issuerPhoneNumber>
        <jurisdictionOfInc>QUEBEC, CANADA</jurisdictionOfInc>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <value>None</value>
        </edgarPreviousNameList>
        <entityType>Corporation</entityType>
        <yearOfInc>
            <overFiveYears>true</overFiveYears>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Richard</firstName>
                <middleName>M.</middleName>
                <lastName>Rumble</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>4279 Persimmon Woods Drive</street1>
                <city>North Charleston</city>
                <stateOrCountry>SC</stateOrCountry>
                <zipCode>29420</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>President</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Jacques</firstName>
                <lastName>Marcotte</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>12085 Du Parc</street1>
                <city>Mirabel</city>
                <stateOrCountry>A8</stateOrCountry>
                <zipCode>J7J 1P3</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>William</firstName>
                <middleName>Barry</middleName>
                <lastName>McDonald</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>24272 Belle Rive Circle</street1>
                <city>Kaguna Miguel</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>92677</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Jean-Francois</firstName>
                <lastName>Bureau</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>1461 Rue Des Mouettes</street1>
                <city>Longueuil</city>
                <stateOrCountry>A8</stateOrCountry>
                <zipCode>J4J 5K4</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Jim</firstName>
                <middleName>R.</middleName>
                <lastName>Husman</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>7 Avenida Vista Grande B7-#478</street1>
                <city>Santa Fe</city>
                <stateOrCountry>NM</stateOrCountry>
                <zipCode>87508</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Pierre</firstName>
                <lastName>Desy</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>172 Chemin de la Chalouperie</street1>
                <city>Saint-Laurent</city>
                <stateOrCountry>A8</stateOrCountry>
                <zipCode>G0A 320</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Andre</firstName>
                <lastName>De Villers</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>630 Rene-Levesque W. 5e Etage</street1>
                <city>Montreal</city>
                <stateOrCountry>A8</stateOrCountry>
                <zipCode>43B 156</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Germain</firstName>
                <lastName>Carriere</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>168 Avenue Portland</street1>
                <city>Mont-Royal</city>
                <stateOrCountry>A8</stateOrCountry>
                <zipCode>H3R 1V1</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Simon</firstName>
                <lastName>Robitaille</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>7417 Du Colibri</street1>
                <city>Charny</city>
                <stateOrCountry>A8</stateOrCountry>
                <zipCode>G6X 3L1</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Vice President / Secretary</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Marc</firstName>
                <lastName>Boisjoli</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>715 Avenue Des Pins E. #304</street1>
                <city>Quebec</city>
                <stateOrCountry>A8</stateOrCountry>
                <zipCode>G1J 1J9</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Chief Financial Officer</relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Other Health Care</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>$1,000,001 - $5,000,000</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2010-02-25</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>46838</minimumInvestmentAccepted>
        <salesCompensationList>
            <recipient>
                <recipientName>Canaccord Financial Ltd.</recipientName>
                <recipientCRDNumber>7449</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>609 Granville Street</street1>
                    <street2>Suite 2200</street2>
                    <city>Vancouver</city>
                    <stateOrCountry>A1</stateOrCountry>
                    <zipCode>V7Y 1H2</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
            </recipient>
        </salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>120000</totalOfferingAmount>
            <totalAmountSold>120000</totalAmountSold>
            <totalRemaining>0</totalRemaining>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>3</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>7200</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>TSO3 Inc.</issuerName>
                <signatureName>/s/ Marc Boisjoli</signatureName>
                <nameOfSigner>Marc Boisjoli</nameOfSigner>
                <signatureTitle>Chief Financial Officer</signatureTitle>
                <signatureDate>2010-03-09</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
