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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 V51P5pSG8t57GUG6m8eJWXcCOkd3Vy2mG/hGpUTFMbWUjx9P2IIgm6B6b9nXJ0Ih
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<SEC-DOCUMENT>0000716823-07-000011.txt : 20070108
<SEC-HEADER>0000716823-07-000011.hdr.sgml : 20070108
<ACCEPTANCE-DATETIME>20070108144918
ACCESSION NUMBER:		0000716823-07-000011
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070105
FILED AS OF DATE:		20070108
DATE AS OF CHANGE:		20070108

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MILACRON INC
		CENTRAL INDEX KEY:			0000716823
		STANDARD INDUSTRIAL CLASSIFICATION:	SPECIAL INDUSTRY MACHINERY, NEC [3559]
		IRS NUMBER:				311062125
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1228

	BUSINESS ADDRESS:	
		STREET 1:		2090 FLORENCE AVENUE
		STREET 2:		PO BOX 63716
		CITY:			CINCINNATI
		STATE:			OH
		ZIP:			45206
		BUSINESS PHONE:		5134875000

	MAIL ADDRESS:	
		STREET 1:		2090 FLORENCE AVENUE
		STREET 2:		P.O. BOX 63716
		CITY:			CINCINNATI
		STATE:			OH
		ZIP:			45206

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CINCINNATI MILACRON INC /DE/
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CINCINNATI MILACRON HOLDINGS INC
		DATE OF NAME CHANGE:	19830503

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CINCINNATI MILLING MACHINE CO
		DATE OF NAME CHANGE:	19600201

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BAILEY SALLIE B
		CENTRAL INDEX KEY:			0001234014

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08485
		FILM NUMBER:		07517245

	BUSINESS ADDRESS:	
		STREET 1:		C/O THE TIMKEN COMPANY
		STREET 2:		1835 DUEBER AVE., S.W.; P.O. BOX 6928
		CITY:			CANTON
		STATE:			OH
		ZIP:			44706-0926
		BUSINESS PHONE:		3304714226

	MAIL ADDRESS:	
		STREET 1:		C/O THE TIMKEN COMPANY
		STREET 2:		1835 DUEBER AVE., S.W. P.O. BOX 6928
		CITY:			CANTON
		STATE:			OH
		ZIP:			44706-0926
</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>2007-01-05</periodOfReport>

    <issuer>
        <issuerCik>0000716823</issuerCik>
        <issuerName>MILACRON INC</issuerName>
        <issuerTradingSymbol>MZ</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001234014</rptOwnerCik>
            <rptOwnerName>BAILEY SALLIE B</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2090 FLORENCE AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CINCINNATI</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>45206</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Phantom Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2007-01-05</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>12500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>.80</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>12500</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>23397.46</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Each share of phantom stock is the economic equivalent of one share of common stock.  The shares of phantom stock become payable in cash or common stock, at the election of the reporting person, upon the reporting person's termination of service as a director.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Walter S. Wood, Attorney - in - Fact</signatureName>
        <signatureDate>2007-01-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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