<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-11-02</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0000109380</issuerCik>
        <issuerName>ZIONS BANCORPORATION /UT/</issuerName>
        <issuerTradingSymbol>ZION</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001184838</rptOwnerCik>
            <rptOwnerName>HINCKLEY CLARK B</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ONE SOUTH MAIN STREET, 15TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SALT LAKE CITY</rptOwnerCity>
            <rptOwnerState>UT</rptOwnerState>
            <rptOwnerZipCode>84133-1109</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Sr. Vice President</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Deferred Comp</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0</value>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2009-11-02</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>I</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>25.1</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>14.05</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F3"/>
                <footnoteId id="F4"/>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
                <footnoteId id="F4"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>25.1</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1138.2417</value>
                    <footnoteId id="F6"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Each unit represents one unit in the Company's unitized stock fund.</footnote>
        <footnote id="F2">Each unit represents one share of the company's Phantom  Stock.</footnote>
        <footnote id="F3">Units are paid out in cash or stock upon date or age elected at time of deferral, or upon termination of employment.</footnote>
        <footnote id="F4">Each share of phantom stock entitled the reporting person to receive, on the date reported, one share of ZION common stock or the cash value thereof.  Prior to payment, the reporting person had the right to transfer the value of his phantom stock account into an alternative investment account.</footnote>
        <footnote id="F5">Amendment.  The Form 4 filed on 7/27/2009 inadvertantly reported an incorrect number of shares acquired and price due to an error by the plan's third-party administrator.</footnote>
        <footnote id="F6">Includes shares acquired pursuant to Dividend Reinvestment.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>By Thomas E. Laursen as attorney in fact</signatureName>
        <signatureDate>2009-11-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
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X0303
4
2009-11-02
1
0000109380
ZIONS BANCORPORATION /UT/
ZION
0001184838
HINCKLEY CLARK B
ONE SOUTH MAIN STREET, 15TH FLOOR
SALT LAKE CITY
UT
84133-1109
0
1
0
0
Sr. Vice President
Deferred Comp
0
2009-11-02
4
I
0
25.1
14.05
D
Common Stock
25.1
1138.2417
D
Each unit represents one unit in the Company's unitized stock fund.
Each unit represents one share of the company's Phantom  Stock.
Units are paid out in cash or stock upon date or age elected at time of deferral, or upon termination of employment.
Each share of phantom stock entitled the reporting person to receive, on the date reported, one share of ZION common stock or the cash value thereof.  Prior to payment, the reporting person had the right to transfer the value of his phantom stock account into an alternative investment account.
Amendment.  The Form 4 filed on 7/27/2009 inadvertantly reported an incorrect number of shares acquired and price due to an error by the plan's third-party administrator.
Includes shares acquired pursuant to Dividend Reinvestment.
By Thomas E. Laursen as attorney in fact
2009-11-04