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

    <documentType>4</documentType><periodOfReport>2003-11-20</periodOfReport>
    <issuer>
        <issuerCik>0000098246</issuerCik>
        <issuerName>TIFFANY &amp; CO</issuerName>
        <issuerTradingSymbol>TIF</issuerTradingSymbol></issuer><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001192023</rptOwnerCik>
            <rptOwnerName>PRESBY J THOMAS</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><nonDerivativeHolding><securityTitle><value>No Securities Beneficially Owned</value></securityTitle><postTransactionAmounts><sharesOwnedFollowingTransaction><value>0</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></nonDerivativeHolding></nonDerivativeTable><derivativeTable><derivativeTransaction><securityTitle><value>Non-Qualified Stock Option (Right to Buy)</value></securityTitle><conversionOrExercisePrice><value>42.815</value></conversionOrExercisePrice><transactionDate><value>2003-11-20</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>7500</value></transactionShares><transactionPricePerShare><value>0</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2004-11-20</value><footnoteId id="F1"/></exerciseDate><expirationDate><value>2013-11-20</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>7500</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>7500</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">Granted pursuant to the Tiffany &amp; Co. 1998 Directors Option Plan, which complies with Rule 16(b)-3.  The options vest in two equal installments beginning on the one-year anniversary of the grant date.</footnote></footnotes><remarks/><ownerSignature><signatureName>Patrick B. Dorsey, Attorney-in-Fact for J. Thomas Presby</signatureName><signatureDate>2003-11-24</signatureDate></ownerSignature></ownershipDocument>
[{"type": "4", "sequence": "1", "filename": "edgar.xml", "description": "PRIMARY DOCUMENT", "secsgml_size_bytes": 3340}]
X0201
4
2003-11-20
0000098246
TIFFANY & CO
TIF
0001192023
PRESBY J THOMAS
TIFFANY & CO.
727 FIFTH AVENUE
NEW YORK
NY
10022
1
0
0
0
No Securities Beneficially Owned
0
D
Non-Qualified Stock Option (Right to Buy)
42.815
2003-11-20
4
A
0
7500
0
A
2004-11-20
2013-11-20
Common Stock
7500
7500
D
Granted pursuant to the Tiffany & Co. 1998 Directors Option Plan, which complies with Rule 16(b)-3.  The options vest in two equal installments beginning on the one-year anniversary of the grant date.
Patrick B. Dorsey, Attorney-in-Fact for J. Thomas Presby
2003-11-24