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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 OoDQWJ7m4dJf5x3EpFIZ2NOji6L9XVNIcQ1pGtoaYbXcNJiBB3jZlskHXAImuXfN
 Z5SosU95exk8+MoJYV2WGQ==

<SEC-DOCUMENT>0001072588-05-000393.txt : 20051128
<SEC-HEADER>0001072588-05-000393.hdr.sgml : 20051128
<ACCEPTANCE-DATETIME>20051128175649
ACCESSION NUMBER:		0001072588-05-000393
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20051115
FILED AS OF DATE:		20051128
DATE AS OF CHANGE:		20051128

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Green Redgie T
		CENTRAL INDEX KEY:			0001310804

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-09500
		FILM NUMBER:		051229314

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		303 424 8430

	MAIL ADDRESS:	
		STREET 1:		16538 W. 76TH DR.
		CITY:			ARVADA
		STATE:			CO
		ZIP:			80007

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MOUNTAINS WEST EXPLORATION INC
		CENTRAL INDEX KEY:			0000319040
		STANDARD INDUSTRIAL CLASSIFICATION:	CRUDE PETROLEUM & NATURAL GAS [1311]
		IRS NUMBER:				850280415
		STATE OF INCORPORATION:			NM
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		7609 RALSTON ROAD
		CITY:			ARVADA
		STATE:			CO
		ZIP:			80002
		BUSINESS PHONE:		303 422 8127

	MAIL ADDRESS:	
		STREET 1:		7609 RALSTON ROAD
		CITY:			ARVADA
		STATE:			CO
		ZIP:			80002
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2005-11-15</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000319040</issuerCik>
        <issuerName>MOUNTAINS WEST EXPLORATION INC</issuerName>
        <issuerTradingSymbol>MWXI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001310804</rptOwnerCik>
            <rptOwnerName>Green Redgie T</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>16538 W. 76TH DR.</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>ARVADA</rptOwnerCity>
            <rptOwnerState>CO</rptOwnerState>
            <rptOwnerZipCode>80007</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>common stock</value>
            </securityTitle>
            <transactionDate>
                <value>2005-11-15</value>
            </transactionDate>
            <deemedExecutionDate>
                <value>2005-11-15</value>
            </deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>5000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>/s/Redgie Green</signatureName>
        <signatureDate>2005-11-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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