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

    <schemaVersion>X0202</schemaVersion>

    <documentType>3/A</documentType>

    <periodOfReport>2000-02-16</periodOfReport>

    <dateOfOriginalSubmission>2000-02-25</dateOfOriginalSubmission>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001090872</issuerCik>
        <issuerName>AGILENT TECHNOLOGIES INC</issuerName>
        <issuerTradingSymbol>A</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001014330</rptOwnerCik>
            <rptOwnerName>KUNZ HEIDI</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>395 PAGE MILL ROAD, MS A3-18</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PALO ALTO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94306</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Non-Employee Director Stock Option (right to buy)</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>80.63</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2001-02-16</value>
            </exerciseDate>
            <expirationDate>
                <value>2010-02-15</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>8159</value>
                    <footnoteId id="F2"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Right to buy Agilent Technologies, Inc. common stock granted under the Agilent Technologies, Inc. 1999 Non-Employee Director Stock Plan complying with Rule 16b-3.</footnote>
        <footnote id="F2">The reporting person's Form 3, dated February 25, 2000, reported 8,160 shares underlying options granted to the reporting person under the Agilent Technologies, Inc. 1999 Non-Employee Director Stock Plan.  The actual number of shares underlying options granted to the reporting person under the Agilent Technologies, Inc. 1999 Non-Employee Director Stock Plan was 8,159.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>By: D. Craig Nordlund / Attorney-in-fact</signatureName>
        <signatureDate>2000-02-25</signatureDate>
    </ownerSignature>
</ownershipDocument>

