Contracting Parties
The Commission may be joined by any government that is a member of the United Nations (UN), any specialized UN agency, or any inter-governmental economic integration organization constituted by States that have transferred to it competence over the matters governed by the ICCAT Convention. Instruments of ratification, approval, or adherence may be deposited with the Director-General of the Food and Agriculture Organization of the United Nations (FAO), and membership is effective on the date of such deposit. Currently, there are 48 contracting parties.
| UNITED STATES | 18 | V | 1967 | |
| JAPAN | 24 | VIII | 1967 | |
| SOUTH AFRICA | 7 | X | 1967 | |
| GHANA | 17 | IV | 1968 | |
| CANADA | 20 | VIII | 1968 | |
| FRANCE (St-Pierre et Miquelon) | 7 | XI | 1968 | |
| BRASIL | 1 | IV | 1969 | |
| MAROC | 26 | IX | 1969 | |
| KOREA, Rep. of | 28 | VIII | 1970 | |
| CÔTE D'IVOIRE | 6 | XII | 1972 | |
| ANGOLA | 29 | VII | 1976 | |
| RUSSIA | 7 | I | 1977 | |
| GABON | 19 | IX | 1977 | |
| CAP-VERT | 11 | X | 1979 | |
| URUGUAY | 16 | III | 1983 | |
| SÃO TOMÉ E PRINCIPE | 15 | IX | 1983 | |
| VENEZUELA | 17 | XI | 1983 | |
| GUINEA ECUATORIAL | 13 | V | 1987 | |
| GUINÉE REP | 5 | VI | 1991 | |
| UNITED KINGDOM (O. territories) | 10 | XI | 1995 | |
| LIBYA | 27 | XI | 1995 | |
| CHINA, People's Rep. of | 24 | X | 1996 | |
| CROATIA | 20 | X | 1997 | |
| EUROPEAN UNION | 14 | XI | 1997 | |
| TUNISIE | 16 | XII | 1997 | |
| PANAMA | 28 | XII | 1998 | |
| TRINIDAD & TOBAGO | 30 | III | 1999 | |
| NAMIBIA | 10 | XI | 1999 | |
| BARBADOS | 13 | XII | 2000 | |
| HONDURAS | 30 | I | 2001 | |
| ALGÉRIE | 16 | II | 2001 | |
| MEXICO | 24 | V | 2002 | |
| VANUATU | 25 | X | 2002 | |
| ICELAND | 30 | X | 2002 | |
| TURKEY | 4 | VII | 2003 | |
| PHILIPPINES | 9 | I | 2004 | |
| NORWAY | 5 | III | 2004 | |
| NICARAGUA | 11 | III | 2004 | |
| GUATEMALA | 12 | XI | 2004 | |
| SENEGAL | 21 | XII | 2004 | |
| BELIZE | 19 | VII | 2005 | |
| SYRIA | 2 | IX | 2005 | |
| St VINCENT & THE GRENADINES | 20 | XI | 2006 | |
| NIGERIA | 2 | VIII | 2007 | |
| EGYPT | 3 | X | 2007 | |
| ALBANIA | 31 | III | 2008 | |
| SIERRA LEONE | 13 | X | 2008 | |
| MAURITANIA | 4 | XII | 2008 |
Note 1 : SENEGAL was a member of the Commission from 25-VIII-1971 to 31-XII-1988 and rejoined the Commission on 21-XII-2004. CUBA was a member of the Commission from 15-I-1975 to 31-XII-1991. BENIN was a member of the Commission from 9-I-1978 to 31-XII-1994.
Note 2 : FRANCE (member since 7-XI-1968), SPAIN (member since 21-III-1969), PORTUGAL (member since 3-IX-1969), the U.K. (member since 10-XI-1995) and ITALY (member since 6-VIII-1997) withdrew from the Commission following the access of the European Community on 14-XI-1997. However, FRANCE retains membership as of 24-XII-97 and the UNITED KINGDOM as of 19-I-1998 on behalf of their overseas territories not covered by the Treaty of Rome. CYPRUS (member since 20-III-2003) and MALTA (member since 7-VIII-2003) withdrew from the Commission following the access of the European Community on 1-V-2004.
Note 3: The European Union succeeded the European Community as of December 1, 2009.
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Cooperators
ICCAT can also grant the status of Cooperators following the procedures outlined in the 2003 Recommendation by ICCAT on Criteria for Attaining the Status of Cooperating Non-Contracting Party, Entity or Fishing Entity in ICCAT. Currently, this status has been attained by the following:
- Chinese Taipei
- Curaçao
- Colombia
- Suriname
- El Salvador

