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

    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>
    <periodOfReport>2003-07-23</periodOfReport>
    <notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0001083036</issuerCik>
        <issuerName>SCIENTIFIC ENERGY INC</issuerName>
        <issuerTradingSymbol>SEYI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001163559</rptOwnerCik>
            <rptOwnerName>RUMBOLD DAVID</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>200 WEST OLIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>WYOMING</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>81491</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
        <isDirector>0</isDirector>
        <isOfficer>0</isOfficer>
        <isTenPercentOwner>1</isTenPercentOwner>
        <isOther>0</isOther>
    </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>

        <securityTitle>
            <value>Common Stock, $0.001 par</value>
        </securityTitle>

        <transactionDate>
            <value>2003-07-23</value>
        </transactionDate>
    <transactionCoding>
        <transactionFormType>4</transactionFormType>
        <transactionCode>P</transactionCode>
        <equitySwapInvolved>0</equitySwapInvolved>
    </transactionCoding>
        <transactionAmounts>

            <transactionShares>
                <value>3000000</value>
            </transactionShares>

            <transactionPricePerShare>
                <value>.08</value>
            </transactionPricePerShare>

            <transactionAcquiredDisposedCode>
                <value>A</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <postTransactionAmounts>

            <sharesOwnedFollowingTransaction>
                <value>7600205</value>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>

            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
        </nonDerivativeTransaction>

        <nonDerivativeHolding>

        <securityTitle>
            <value>Common Stock, $0.001 par</value>
        </securityTitle>
        <postTransactionAmounts>

            <sharesOwnedFollowingTransaction>
                <value>500000</value>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>

            <directOrIndirectOwnership>
                <value>I</value>
            </directOrIndirectOwnership>

            <natureOfOwnership>
                <value>Spouse</value>
            </natureOfOwnership>
        </ownershipNature>
        </nonDerivativeHolding>

        <nonDerivativeHolding>

        <securityTitle>
            <value>Common Stock, $0.001 par</value>
        </securityTitle>
        <postTransactionAmounts>

            <sharesOwnedFollowingTransaction>
                <value>500000</value>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>

            <directOrIndirectOwnership>
                <value>I</value>
            </directOrIndirectOwnership>

            <natureOfOwnership>
                <value>minor child</value>
            </natureOfOwnership>
        </ownershipNature>
        </nonDerivativeHolding>

        <nonDerivativeHolding>

        <securityTitle>
            <value>Common Stock, $0.001 par</value>
        </securityTitle>
        <postTransactionAmounts>

            <sharesOwnedFollowingTransaction>
                <value>500000</value>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>

            <directOrIndirectOwnership>
                <value>I</value>
            </directOrIndirectOwnership>

            <natureOfOwnership>
                <value>minor child</value>
            </natureOfOwnership>
        </ownershipNature>
        </nonDerivativeHolding>

        <nonDerivativeHolding>

        <securityTitle>
            <value>Common Stock, $0.001 par</value>
        </securityTitle>
        <postTransactionAmounts>

            <sharesOwnedFollowingTransaction>
                <value>500000</value>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>

            <directOrIndirectOwnership>
                <value>I</value>
            </directOrIndirectOwnership>

            <natureOfOwnership>
                <value>minor child</value>
            </natureOfOwnership>
        </ownershipNature>
        </nonDerivativeHolding>

    </nonDerivativeTable>
    <ownerSignature>
        <signatureName>David Rumbold</signatureName>
        <signatureDate>2003-07-23</signatureDate>
    </ownerSignature>

</ownershipDocument>

