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

    <schemaVersion>X0704</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001026328</cik>
        <entityName>ST ANSELM EXPLORATION CO</entityName>
        <issuerAddress>
            <street1>730 17TH STREET #820</street1>
            <city>DENVER</city>
            <stateOrCountry>CO</stateOrCountry>
            <stateOrCountryDescription>COLORADO</stateOrCountryDescription>
            <zipCode>80202</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>303-298-9000</issuerPhoneNumber>
        <jurisdictionOfInc>COLORADO</jurisdictionOfInc>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <value>None</value>
        </edgarPreviousNameList>
        <entityType>Corporation</entityType>
        <yearOfInc>
            <overFiveYears>true</overFiveYears>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>ANNA</firstName>
                <lastName>WELLS</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>730 17TH STREET #820</street1>
                <city>DENVER</city>
                <stateOrCountry>CO</stateOrCountry>
                <stateOrCountryDescription>COLORADO</stateOrCountryDescription>
                <zipCode>80202</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>MICHAEL</firstName>
                <lastName>ZAKROFF</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>730 17TH STREET #820</street1>
                <city>DENVER</city>
                <stateOrCountry>CO</stateOrCountry>
                <stateOrCountryDescription>COLORADO</stateOrCountryDescription>
                <zipCode>80202</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>MARK</firstName>
                <lastName>PALMER</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>730 17TH STREET #820</street1>
                <city>DENVER</city>
                <stateOrCountry>CO</stateOrCountry>
                <stateOrCountryDescription>COLORADO</stateOrCountryDescription>
                <zipCode>80202</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>STEVEN</firstName>
                <lastName>ETKIND</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>730 17TH STREET #820</street1>
                <city>DENVER</city>
                <stateOrCountry>CO</stateOrCountry>
                <stateOrCountryDescription>COLORADO</stateOrCountryDescription>
                <zipCode>80202</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Oil and Gas</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>Decline to Disclose</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
            <item>46</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2010-10-29</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isDebtType>true</isDebtType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>25000</minimumInvestmentAccepted>
        <salesCompensationList>
            <recipient>
                <recipientName>NONE</recipientName>
                <recipientCRDNumber>None</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>730 17TH STREET</street1>
                    <city>DENVER</city>
                    <stateOrCountry>CO</stateOrCountry>
                    <stateOrCountryDescription>COLORADO</stateOrCountryDescription>
                    <zipCode>80202</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <state>AZ</state>
                    <description>ARIZONA</description>
                    <state>CA</state>
                    <description>CALIFORNIA</description>
                    <state>CO</state>
                    <description>COLORADO</description>
                    <state>FL</state>
                    <description>FLORIDA</description>
                    <state>IL</state>
                    <description>ILLINOIS</description>
                    <state>KS</state>
                    <description>KANSAS</description>
                    <state>LA</state>
                    <description>LOUISIANA</description>
                    <state>ME</state>
                    <description>MAINE</description>
                    <state>MN</state>
                    <description>MINNESOTA</description>
                    <state>NE</state>
                    <description>NEBRASKA</description>
                    <state>NJ</state>
                    <description>NEW JERSEY</description>
                    <state>NM</state>
                    <description>NEW MEXICO</description>
                    <state>NY</state>
                    <description>NEW YORK</description>
                    <state>NC</state>
                    <description>NORTH CAROLINA</description>
                    <state>OH</state>
                    <description>OHIO</description>
                    <state>OK</state>
                    <description>OKLAHOMA</description>
                    <state>OR</state>
                    <description>OREGON</description>
                    <state>PA</state>
                    <description>PENNSYLVANIA</description>
                    <state>TN</state>
                    <description>TENNESSEE</description>
                    <state>TX</state>
                    <description>TEXAS</description>
                    <state>VT</state>
                    <description>VERMONT</description>
                    <state>VA</state>
                    <description>VIRGINIA</description>
                    <state>WA</state>
                    <description>WASHINGTON</description>
                    <state>WY</state>
                    <description>WYOMING</description>
                </statesOfSolicitationList>
                <foreignSolicitation>true</foreignSolicitation>
            </recipient>
        </salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>65099796</totalOfferingAmount>
            <totalAmountSold>65099796</totalAmountSold>
            <totalRemaining>0</totalRemaining>
            <clarificationOfResponse>This filing relates to the issuer's offer and sale, for a debt restructuring, reduced interest rate/extended term (unsecured), in exchange for a like amount(principal and accrued interest) of prior notes (shorter term, higher interest, unsecured).</clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>263</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse>No proceeds from this sale of promissory notes (a restructuring exchange for old promissory notes) were realized by the issuer.</clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>ST ANSELM EXPLORATION CO</issuerName>
                <signatureName>/s/ Michael Zakroff</signatureName>
                <nameOfSigner>MICHAEL ZAKROFF</nameOfSigner>
                <signatureTitle>TREASURER</signatureTitle>
                <signatureDate>2010-11-17</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
