<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType><periodOfReport>2003-11-24</periodOfReport>
    <issuer>
        <issuerCik>0000098246</issuerCik>
        <issuerName>TIFFANY &amp; CO</issuerName>
        <issuerTradingSymbol>TIF</issuerTradingSymbol></issuer><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001016747</rptOwnerCik>
            <rptOwnerName>HAYES SAMUEL L III</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>TIFFANY &amp; CO.</rptOwnerStreet1>
            <rptOwnerStreet2>727 FIFTH AVENUE</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</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 $.01 Par</value></securityTitle><transactionDate><value>2003-11-24</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>11040</value></transactionShares><transactionPricePerShare><value>44.10</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>16100</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeHolding><securityTitle><value>Common Stock $.01 Par</value></securityTitle><postTransactionAmounts><sharesOwnedFollowingTransaction><value>10000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>In Trust for Daughter</value><footnoteId id="F1"/></natureOfOwnership></ownershipNature></nonDerivativeHolding><nonDerivativeHolding><securityTitle><value>Common Stock $.01 Par</value></securityTitle><postTransactionAmounts><sharesOwnedFollowingTransaction><value>10000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>In Trust for Daughter</value><footnoteId id="F2"/></natureOfOwnership></ownershipNature></nonDerivativeHolding><nonDerivativeHolding><securityTitle><value>Common Stock $.01 Par</value></securityTitle><postTransactionAmounts><sharesOwnedFollowingTransaction><value>10000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>In Trust for Daughter</value><footnoteId id="F3"/></natureOfOwnership></ownershipNature></nonDerivativeHolding><nonDerivativeHolding><securityTitle><value>Common Stock $.01 Par</value></securityTitle><postTransactionAmounts><sharesOwnedFollowingTransaction><value>2079</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>By Spouse</value></natureOfOwnership></ownershipNature></nonDerivativeHolding></nonDerivativeTable><footnotes><footnote id="F1">Shares held by Barbara L. Hayes (spouse of reporting person) as trustee for daughter, Susan. </footnote><footnote id="F2">Shares held by Barbara L. Hayes (spouse of reporting person) as trustee for daughter, Judith. </footnote><footnote id="F3">Shares held by Barbara L. Hayes (spouse of reporting person) as trustee for daughter, Elizabeth. </footnote></footnotes><remarks/><ownerSignature><signatureName>Patrick B. Dorsey</signatureName><signatureDate>2003-11-25</signatureDate></ownerSignature></ownershipDocument>
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X0201
4
2003-11-24
0000098246
TIFFANY & CO
TIF
0001016747
HAYES SAMUEL L III
TIFFANY & CO.
727 FIFTH AVENUE
NEW YORK
NY
10022
1
0
0
0
Common Stock $.01 Par
2003-11-24
4
S
0
11040
44.10
D
16100
D
Common Stock $.01 Par
10000
I
In Trust for Daughter
Common Stock $.01 Par
10000
I
In Trust for Daughter
Common Stock $.01 Par
10000
I
In Trust for Daughter
Common Stock $.01 Par
2079
I
By Spouse
Shares held by Barbara L. Hayes (spouse of reporting person) as trustee for daughter, Susan.
Shares held by Barbara L. Hayes (spouse of reporting person) as trustee for daughter, Judith.
Shares held by Barbara L. Hayes (spouse of reporting person) as trustee for daughter, Elizabeth.
Patrick B. Dorsey
2003-11-25