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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>0000723125-09-000096.txt : 20091005
<SEC-HEADER>0000723125-09-000096.hdr.sgml : 20091005
<ACCEPTANCE-DATETIME>20091005202541
ACCESSION NUMBER:		0000723125-09-000096
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20091005
FILED AS OF DATE:		20091005
DATE AS OF CHANGE:		20091005

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MICRON TECHNOLOGY INC
		CENTRAL INDEX KEY:			0000723125
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				751618004
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0828

	BUSINESS ADDRESS:	
		STREET 1:		8000 S FEDERAL WAY
		STREET 2:		PO BOX 6
		CITY:			BOISE
		STATE:			ID
		ZIP:			83716-9632
		BUSINESS PHONE:		2083684000

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Shirley Brian
		CENTRAL INDEX KEY:			0001353179

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-10658
		FILM NUMBER:		091106916

	MAIL ADDRESS:	
		STREET 1:		8000 S FEDERAL WAY, MS 1-557
		CITY:			BOISE
		STATE:			ID
		ZIP:			83716
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-10-05</periodOfReport>

    <issuer>
        <issuerCik>0000723125</issuerCik>
        <issuerName>MICRON TECHNOLOGY INC</issuerName>
        <issuerTradingSymbol>MU</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001353179</rptOwnerCik>
            <rptOwnerName>Shirley Brian</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>8000 S FEDERAL WAY MS1-557</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BOISE</rptOwnerCity>
            <rptOwnerState>ID</rptOwnerState>
            <rptOwnerZipCode>83716</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>VP of Memory</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2009-10-05</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>7107</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>7.46</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>426239</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Withholding of shares of common stock to satisfy tax withholding obligations in connection with the vesting of restricted stock awarded under the Issuer's 2004 Equity Incentive Plan.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Katie Reid, Attorney-in-Fact</signatureName>
        <signatureDate>2009-10-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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