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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2014-10-25</periodOfReport>

    <issuer>
        <issuerCik>0000729237</issuerCik>
        <issuerName>PARKWAY PROPERTIES INC</issuerName>
        <issuerTradingSymbol>PKY</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001520994</rptOwnerCik>
            <rptOwnerName>Pratt Henry F III</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>390 NORTH ORANGE AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 2400</rptOwnerStreet2>
            <rptOwnerCity>ORLANDO</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>32801</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP OF ASSET MANAGEMENT</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2014-10-25</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2403</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>19.70</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>180915</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">On October 25, 2014, 8,787 time-based RSUs vested, and the Reporting Person instructed the Company to withhold 2,403 shares to cover tax withholding obligations as permitted under the Company's 2013 Omnibus Equity Incentive Plan.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Jeremy Dorsett, on behalf of Henry F. Pratt as Attorney-in-fact</signatureName>
        <signatureDate>2014-10-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
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X0306
4
2014-10-25
0000729237
PARKWAY PROPERTIES INC
PKY
0001520994
Pratt Henry F III
390 NORTH ORANGE AVENUE
SUITE 2400
ORLANDO
FL
32801
0
1
0
0
EVP OF ASSET MANAGEMENT
Common Stock
2014-10-25
4
F
0
2403
19.70
D
180915
D
On October 25, 2014, 8,787 time-based RSUs vested, and the Reporting Person instructed the Company to withhold 2,403 shares to cover tax withholding obligations as permitted under the Company's 2013 Omnibus Equity Incentive Plan.
/s/ Jeremy Dorsett, on behalf of Henry F. Pratt as Attorney-in-fact
2014-10-27