-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0000101829-07-000094.txt : 20070703
<SEC-HEADER>0000101829-07-000094.hdr.sgml : 20070703
<ACCEPTANCE-DATETIME>20070703164404
ACCESSION NUMBER:		0000101829-07-000094
CONFORMED SUBMISSION TYPE:	3/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070411
FILED AS OF DATE:		20070703
DATE AS OF CHANGE:		20070703

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			UNITED TECHNOLOGIES CORP /DE/
		CENTRAL INDEX KEY:			0000101829
		STANDARD INDUSTRIAL CLASSIFICATION:	AIRCRAFT ENGINES & ENGINE PARTS [3724]
		IRS NUMBER:				060570975
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		UNITED TECHNOLOGIES BLDG
		STREET 2:		ONE FINANCIAL PLZ
		CITY:			HARTFORD
		STATE:			CT
		ZIP:			06101
		BUSINESS PHONE:		8607287000

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	UNITED TECHNOLOGIES MICROELECTRONICS CENTER
		DATE OF NAME CHANGE:	19850825

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	UNITED TECHNOLOGIES CORP
		DATE OF NAME CHANGE:	19841205

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Valentine Debra A
		CENTRAL INDEX KEY:			0001395030

	FILING VALUES:
		FORM TYPE:		3/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-00812
		FILM NUMBER:		07961431

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		860-728-7836

	MAIL ADDRESS:	
		STREET 1:		UNITED TECHNOLOGIES CORPORATION
		STREET 2:		ONE FINANCIAL PLAZA
		CITY:			HARTFORD
		STATE:			CT
		ZIP:			06101
</SEC-HEADER>
<DOCUMENT>
<TYPE>3/A
<SEQUENCE>1
<FILENAME>val619.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3/A</documentType>

    <periodOfReport>2007-04-11</periodOfReport>

    <dateOfOriginalSubmission>2007-04-20</dateOfOriginalSubmission>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000101829</issuerCik>
        <issuerName>UNITED TECHNOLOGIES CORP /DE/</issuerName>
        <issuerTradingSymbol>UTX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001395030</rptOwnerCik>
            <rptOwnerName>Valentine Debra A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>UNITED TECHNOLOGIES CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>ONE FINANCIAL PLAZA</rptOwnerStreet2>
            <rptOwnerCity>HARTFORD</rptOwnerCity>
            <rptOwnerState>CT</rptOwnerState>
            <rptOwnerZipCode>06101</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>VP, Deputy GC and Secretary</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>25534</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>420.909</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Savings Plan Trustee</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock (Restricted)</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>10000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Non-Qualified Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>46.4749</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2007-01-12</value>
            </exerciseDate>
            <expirationDate>
                <value>2014-01-11</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>31600.0000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Non-Qualified Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>51.5000</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2008-01-03</value>
            </exerciseDate>
            <expirationDate>
                <value>2015-01-02</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>32000.0000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>12057.9601</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F2"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Appreciation Right</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>56.5300</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2009-01-03</value>
            </exerciseDate>
            <expirationDate>
                <value>2016-01-02</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>16200.0000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F3"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Appreciation Right</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>62.8100</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2010-01-03</value>
            </exerciseDate>
            <expirationDate>
                <value>2017-01-02</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>20500.0000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F4"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The Restricted Stock Units vest on retirement from UTC on or after age 62 with a minimum of three years of service as a member of UTC's Executive Leadership Group.</footnote>
        <footnote id="F2">These shares were inadvertently omitted from the reporting person's original Form 3.</footnote>
        <footnote id="F3">The reporting person was also awarded 4,980 performance share units (PSUs) under the UTC Long Term Incentive Plan.  Each PSU has a value equal to one share of UTC common stock.  These PSUs vest solely upon achievement of pre-established performance targets for UTC's earnings per share and total shareholder return over a three year performance period.</footnote>
        <footnote id="F4">The reporting person was also awarded 5,600 performance share units (PSUs) under the UTC Long Term Incentive Plan.  Each PSU has a value equal to one share of UTC common stock.  These PSUs vest solely upon achievement of pre-established performance targets for UTC's earnings per share and total shareholder return over a three year performance period.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>By: /s/ Charles F. Hildebrand as Attorney-in-Fact</signatureName>
        <signatureDate>2007-07-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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