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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 G7vsgq6MGc8pkKDXSME2fyzfCeiPSAW2HbUn+oYZWmTVSW76egTBVjFzUGY+scv7
 0W4mvAHnyrV/+BwXrZFkfw==

<SEC-DOCUMENT>0001010412-09-000080.txt : 20090430
<SEC-HEADER>0001010412-09-000080.hdr.sgml : 20090430
<ACCEPTANCE-DATETIME>20090430170555
ACCESSION NUMBER:		0001010412-09-000080
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090424
FILED AS OF DATE:		20090430
DATE AS OF CHANGE:		20090430

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BROWN RAY C
		CENTRAL INDEX KEY:			0001116062

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-30239
		FILM NUMBER:		09784832

	MAIL ADDRESS:	
		STREET 1:		6475 GRANDVIEW AVENUE
		CITY:			MAGALIA
		STATE:			CA
		ZIP:			95954

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			UNICO INC /AZ/
		CENTRAL INDEX KEY:			0001110737
		STANDARD INDUSTRIAL CLASSIFICATION:	METAL MINING [1000]
		IRS NUMBER:				860205130
		STATE OF INCORPORATION:			AZ
		FISCAL YEAR END:			0228

	BUSINESS ADDRESS:	
		STREET 1:		6475 GRANDVIEW AVE
		CITY:			MAGALIA
		STATE:			CA
		ZIP:			95954
		BUSINESS PHONE:		5308734394

	MAIL ADDRESS:	
		STREET 1:		6475 GRANDVIEW AVE
		CITY:			NAGALIA
		STATE:			CA
		ZIP:			95954
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-04-24</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001110737</issuerCik>
        <issuerName>UNICO INC /AZ/</issuerName>
        <issuerTradingSymbol>UNCO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001116062</rptOwnerCik>
            <rptOwnerName>BROWN RAY C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>6475 GRANDVIEW AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MAGALIA</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95954</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>2009-04-24</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2119798</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.0025</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4914908</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>/s/Ray C. Brown</signatureName>
        <signatureDate>2009-04-30</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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