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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Aj0U3dkwBkSTVFAx0V9rAe1j6Qez5wxbl+0y+cr/4e6zECnz/JUKtBfRX94OPXsG
 Z71Jte0ay4p+M5aSWTEFaw==

<SEC-DOCUMENT>0000217346-07-000163.txt : 20071204
<SEC-HEADER>0000217346-07-000163.hdr.sgml : 20071204
<ACCEPTANCE-DATETIME>20071129125031
ACCESSION NUMBER:		0000217346-07-000163
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20071127
FILED AS OF DATE:		20071129
DATE AS OF CHANGE:		20071129

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			UNITED INDUSTRIAL CORP /DE/
		CENTRAL INDEX KEY:			0000101271
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES [3690]
		IRS NUMBER:				952081809
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1214

	BUSINESS ADDRESS:	
		STREET 1:		124 INDUSTRY LANE
		CITY:			HUNT VALLEY
		STATE:			MD
		ZIP:			21030
		BUSINESS PHONE:		(410) 628-3500

	MAIL ADDRESS:	
		STREET 1:		124 INDUSTRY LANE
		CITY:			HUNT VALLEY
		STATE:			MD
		ZIP:			21030

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TOPP INDUSTRIES CORP
		DATE OF NAME CHANGE:	19710510

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	HAYES MANUFACTURING CORP
		DATE OF NAME CHANGE:	19660911

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			TEXTRON INC
		CENTRAL INDEX KEY:			0000217346
		STANDARD INDUSTRIAL CLASSIFICATION:	AIRCRAFT & PARTS [3720]
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-04252
		FILM NUMBER:		071273860

	BUSINESS ADDRESS:	
		STREET 1:		40 WESTMINSTER ST
		CITY:			PROVIDENCE
		STATE:			RI
		ZIP:			02903
		BUSINESS PHONE:		4014212800

	MAIL ADDRESS:	
		STREET 1:		40 WESTMINSTER ST
		CITY:			PROVIDENCE
		STATE:			RI
		ZIP:			02903

	FORMER NAME:	
		FORMER CONFORMED NAME:	AMERICAN TEXTRON INC
		DATE OF NAME CHANGE:	19710510
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-11-27</periodOfReport>

    <issuer>
        <issuerCik>0000101271</issuerCik>
        <issuerName>UNITED INDUSTRIAL CORP /DE/</issuerName>
        <issuerTradingSymbol>UIC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000217346</rptOwnerCik>
            <rptOwnerName>TEXTRON INC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>40 WESTMINSTER STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PROVIDENCE</rptOwnerCity>
            <rptOwnerState>RI</rptOwnerState>
            <rptOwnerZipCode>02903</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</value>
            </securityTitle>
            <transactionDate>
                <value>2007-11-27</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>12500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>81.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>8577943</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2007-11-27</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>11000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>80.99</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>8588943</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2007-11-28</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>13300</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>81.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>8709738</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Marco Acquisition Sub Inc., a Delaware corporation (&quot;Marco&quot;) and a wholly owned subsidiary of Textron Inc., is the registered owner of these securities.</footnote>
        <footnote id="F2">Total includes 107,495 shares previously tendered subject to notices of guaranteed delivery pursuant to the cash tender offer for the outstanding shares of  UIC common stock that expired on November 13, 2007.  These shares have since been delivered and purchased by Marco.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Ann T. Willaman, Assistant Secretary</signatureName>
        <signatureDate>2007-11-29</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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