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

    <schemaVersion>X0202</schemaVersion>

    <documentType>3/A</documentType>

    <periodOfReport>2005-03-15</periodOfReport>

    <dateOfOriginalSubmission>2005-04-11</dateOfOriginalSubmission>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001075247</issuerCik>
        <issuerName>BIG SKY ENERGY CORP</issuerName>
        <issuerTradingSymbol>BSKO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001322530</rptOwnerCik>
            <rptOwnerName>BALGIMBAYEV NURLAN UTEBOVICH</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>5, CHAYKINA STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>ALMATY</rptOwnerCity>
            <rptOwnerState>1P</rptOwnerState>
            <rptOwnerZipCode>00000</rptOwnerZipCode>
            <rptOwnerStateDescription>KAZAKSTAN</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.89</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2006-03-29</value>
            </exerciseDate>
            <expirationDate>
                <value>2008-03-29</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>5000000</value>
                    <footnoteId id="F1"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The Board of Directors agreed to award Mr. Balgimbayev a total of 5,000,000 Stock Options under the Issuer's 2000 Stock Award Plan (as amended).  1,000,000 of these stock options were granted as of the date of his election to the Board, with the remainder to be granted upon an increase in the authorized number of shares available and amendments to the vesting provisions under the 2000 Stock Award Plan (as amended) by shareholder approval at the next Annual Meeting of Shareholders.</footnote>
    </footnotes>

    <remarks>Mr. Balgimbayev was elected to the board of directors of Big Sky Energy Corporation on March 29, 2005.</remarks>

    <ownerSignature>
        <signatureName>/s/ W. Scott Lawler- Attorney-in-Fact</signatureName>
        <signatureDate>2005-04-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
