-----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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 OrxRg/k/8WBycwyKtE6aTg==

<SEC-DOCUMENT>0001140361-05-004145.txt : 20050611
<SEC-HEADER>0001140361-05-004145.hdr.sgml : 20050611
<ACCEPTANCE-DATETIME>20050531210807
ACCESSION NUMBER:		0001140361-05-004145
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050526
FILED AS OF DATE:		20050531
DATE AS OF CHANGE:		20050531

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CARROLL AMELIA M
		CENTRAL INDEX KEY:			0001192892

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-05558
		FILM NUMBER:		05868910

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		3036888800

	MAIL ADDRESS:	
		STREET 1:		7505 VILLAGE SQUARE DR STE 200
		CITY:			CASTLE ROCK
		STATE:			CO
		ZIP:			80108

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			KATY INDUSTRIES INC
		CENTRAL INDEX KEY:			0000054681
		STANDARD INDUSTRIAL CLASSIFICATION:	SPECIAL INDUSTRY MACHINERY, NEC [3559]
		IRS NUMBER:				751277589
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		765 STRAITS TURNPIKE
		STREET 2:		SUITE 2000
		CITY:			MIDDLEBURY
		STATE:			CT
		ZIP:			06762
		BUSINESS PHONE:		2035980397

	MAIL ADDRESS:	
		STREET 1:		765 STRAITS TURNPIKE
		STREET 2:		SUITE 2000
		CITY:			MIDDLEBURY
		STATE:			CT
		ZIP:			06762
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2005-05-26</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000054681</issuerCik>
        <issuerName>KATY INDUSTRIES INC</issuerName>
        <issuerTradingSymbol>KT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001192892</rptOwnerCik>
            <rptOwnerName>CARROLL AMELIA M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>7505 VILLAGE SQUARE DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 200</rptOwnerStreet2>
            <rptOwnerCity>CASTLE ROCK, CO</rptOwnerCity>
            <rptOwnerState>X1</rptOwnerState>
            <rptOwnerZipCode>80108</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>8729</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>4212</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F3"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Note 3</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>804635</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F4"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Notes 1 and 4</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2071036</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F5"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Notes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F5"/>
                    <footnoteId id="F6"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2005-05-26</value>
            </transactionDate>
            <deemedExecutionDate>
                <value>2005-05-26</value>
            </deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.69</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>171839</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Spouse</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Options  to purchase Common Stock</value>
                <footnoteId id="F7"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>3.69</value>
                <footnoteId id="F7"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2005-05-26</value>
            </transactionDate>
            <deemedExecutionDate>
                <value>2005-05-26</value>
            </deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.69</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2005-05-26</value>
            </exerciseDate>
            <expirationDate>
                <value>2015-05-26</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>29000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Spouse</value>
                    <footnoteId id="F7"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Members of the Reporting Person's immediate family are beneficiaries of the Wallace E. and Lelia H. Carroll Trust U/A Dated 5/1/58 F/B/O Wallace E. Carroll, Jr. and his descendants (the &quot;WEC Jr. '58 Trust&quot;), the Lelia H. Carroll Trust U/A Dated 7/12/62 F/B/O Wallace E. Carroll, Jr. (the &quot;WEC Jr. '62 Trust) and the Family Grandchildren Trust U/A dated 9/29/90 F/B/O the descendents of Wallace E. Carroll, Jr. (the ?Family Trust?) (collectively, the ?WEC Trusts?).

The WEC Jr. '58 Trust, the WEC Jr. '62 Trust and the Family Trust directly beneficially own 603,000, 194,693 and 6,942 shares of the Issuer's outstanding common stock, respectively, for an aggregate of 804,635 shares (the ?Trust Shares?).  The Reporting Person may be deemed to have an indirect pecuniary interest in the Trust Shares to the extent that she and/or the members of her immediate family living in the same household are beneficiaries of the WEC Trusts.</footnote>
        <footnote id="F2">CRL, Inc. (&quot;CRL&quot;) directly beneficially owns 2,071,036 shares of the Issuer's outstanding common stock (the ?CRL Shares?) after giving effect to the transaction reported herein.  As stockholders of CRL, the WEC Jr. '58 Trust and the Reporting Person may be deemed to indirectly beneficially own such Shares.  The Reporting Person may be deemed to have an indirect pecuniary interest in the shares indirectly beneficially owned by the WEC Jr. '58 Trust through CRL to the extent that he and/or the members of his immediate family living in the same household are beneficiaries of that trust and as a stockholder of CRL.</footnote>
        <footnote id="F3">Common stock is held by the Katy Industries, Inc. Directors? Deferred Compensation Plan in a Rabbi Trust arrangement.  2,106 shares are held for the benefit of the Reporting Person, and 2,106 shares are held for the benefit of her spouse.</footnote>
        <footnote id="F4">Members of the Reporting Person?s immediate family are beneficiaries of the WEC Trusts (see Note 1).  The Reporting Person may be deemed to have an indirect pecuniary interest in the Trust Shares to the extent that members of her immediate family living in the same household are beneficiaries of the WEC Trusts.</footnote>
        <footnote id="F5">The Reporting Person may be deemed to have an indirect pecuniary interest in the CRL Shares to the extent that members of her immediate family living in the same household own CRL shares and are beneficiaries of the WEC Jr. '58 Trust (see Note 2).</footnote>
        <footnote id="F6">As a stockholder of CRL, the Reporting Person may be deemed to have an indirect pecuniary interest in the CRL Shares (see Note 2).</footnote>
        <footnote id="F7">The Reporting Person's spouse has received stock options from 1995 through 2005.  The execution date, expiration date and conversion price represent the most recent stock option grant.  Range of conversion prices are from $3.11 - $18.125.</footnote>
    </footnotes>

    <remarks>Mimi's Form 4</remarks>

    <ownerSignature>
        <signatureName>Michael Paul, as attorney-in-fact for Amelia M. Carroll</signatureName>
        <signatureDate>2005-05-31</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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