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

    <documentType>4</documentType><periodOfReport>2004-01-15</periodOfReport>
    <issuer>
        <issuerCik>0000098246</issuerCik>
        <issuerName>TIFFANY &amp; CO</issuerName>
        <issuerTradingSymbol>TIF</issuerTradingSymbol></issuer><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001016750</rptOwnerCik>
            <rptOwnerName>SHUTZER WILLIAM A</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>Common Stock $.01 Par</value></securityTitle><postTransactionAmounts><sharesOwnedFollowingTransaction><value>90086</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></nonDerivativeHolding><nonDerivativeHolding><securityTitle><value>Common Stock $.01 Par</value></securityTitle><postTransactionAmounts><sharesOwnedFollowingTransaction><value>4600</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>Trustee</value><footnoteId id="F1"/></natureOfOwnership></ownershipNature></nonDerivativeHolding><nonDerivativeHolding><securityTitle><value>Common Stock $.01 Par</value></securityTitle><postTransactionAmounts><sharesOwnedFollowingTransaction><value>600</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>Trustee </value><footnoteId id="F2"/><footnoteId id="F6"/></natureOfOwnership></ownershipNature></nonDerivativeHolding><nonDerivativeHolding><securityTitle><value>Common Stock $.01 Par</value></securityTitle><postTransactionAmounts><sharesOwnedFollowingTransaction><value>400</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>By son</value><footnoteId id="F1"/><footnoteId id="F3"/></natureOfOwnership></ownershipNature></nonDerivativeHolding><nonDerivativeHolding><securityTitle><value>Common Stock $.01 Par</value></securityTitle><postTransactionAmounts><sharesOwnedFollowingTransaction><value>114000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>By KJC Ltd. </value><footnoteId id="F4"/></natureOfOwnership></ownershipNature></nonDerivativeHolding></nonDerivativeTable><derivativeTable><derivativeTransaction><securityTitle><value>Non-Qualified Stock Option (Right to Buy)</value></securityTitle><conversionOrExercisePrice><value>39.75</value></conversionOrExercisePrice><transactionDate><value>2004-01-15</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved><footnoteId id="F5"/></transactionCoding><transactionAmounts><transactionShares><value>7500</value></transactionShares><transactionPricePerShare><value>0</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><footnoteId id="F6"/></exerciseDate><expirationDate><value>2014-01-14</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">Reporting person is custodian under UGMA of account for daughter, Megan Anne</footnote><footnote id="F2">Reporting person is custodian under UGMA for son, Christopher</footnote><footnote id="F3">Shares held by son, James, who shares reporting person's household.  Reporting person disclaims beneficial ownership.</footnote><footnote id="F4">KJC Ltd. is a Delaware limited partnersip of which the reporting person is the sole general partner.  Reporting person disclaims beneficial ownership of Tiffany &amp; Co. stock held by KJC, Ltd.</footnote><footnote id="F5">Granted Pursuant to the Tiffany &amp; Co. 1998 Directors Opton Plan, which complies with Rule 16(b)-3.  </footnote><footnote id="F6">The option vests in two equal installments on January 15, 2005 and 2006.</footnote></footnotes><remarks/><ownerSignature><signatureName>Patrick B. Dorsey, Attorney-in-Fact for William A. Shutzer</signatureName><signatureDate>2004-01-16</signatureDate></ownerSignature></ownershipDocument>
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X0201
4
2004-01-15
0000098246
TIFFANY & CO
TIF
0001016750
SHUTZER WILLIAM A
TIFFANY & CO.
727 FIFTH AVENUE
NEW YORK
NY
10022
1
0
0
0
Common Stock $.01 Par
90086
D
Common Stock $.01 Par
4600
I
Trustee
Common Stock $.01 Par
600
I
Trustee
Common Stock $.01 Par
400
I
By son
Common Stock $.01 Par
114000
I
By KJC Ltd.
Non-Qualified Stock Option (Right to Buy)
39.75
2004-01-15
4
A
0
7500
0
A
2014-01-14
Common Stock
7500
7500
D
Reporting person is custodian under UGMA of account for daughter, Megan Anne
Reporting person is custodian under UGMA for son, Christopher
Shares held by son, James, who shares reporting person's household.  Reporting person disclaims beneficial ownership.
KJC Ltd. is a Delaware limited partnersip of which the reporting person is the sole general partner.  Reporting person disclaims beneficial ownership of Tiffany & Co. stock held by KJC, Ltd.
Granted Pursuant to the Tiffany & Co. 1998 Directors Opton Plan, which complies with Rule 16(b)-3.
The option vests in two equal installments on January 15, 2005 and 2006.
Patrick B. Dorsey, Attorney-in-Fact for William A. Shutzer
2004-01-16