| Contracting Parties/Signatories | Signature | Instrument | In Force | Details |
|---|
| Afghanistan | | Ratification: March 20, 1979 | June 20, 1979 | |
| Albania | | Ratification: July 10, 1989 | October 10, 1989 | |
| Algeria | | Ratification: June 24, 1974 | December 17, 1975 | |
| Andorra | | Acceptance: January 3, 1997 | April 3, 1997 | |
| Angola | | Ratification: November 7, 1991 | February 7, 1992 | |
| Antigua and Barbuda | | Acceptance: November 1, 1983 | February 1, 1984 | |
| Argentina | | Acceptance: August 23, 1978 | November 23, 1978 | Details |
| Armenia | | Declaration / Notification of Succession: September 5, 1993 | September 23, 1991 | Details |
| Australia | | Ratification: August 22, 1974 | December 17, 1975 | |
| Austria | | Ratification: December 18, 1992 | March 18, 1993 | |
| Azerbaijan | | Ratification: December 16, 1993 | March 16, 1994 | |
| Bahrain | | Ratification: May 28, 1991 | August 28, 1991 | |
| Bangladesh | | Acceptance: August 3, 1983 | November 3, 1983 | |
| Barbados | | Acceptance: April 9, 2002 | July 9, 2002 | |
| Belarus | | Ratification: October 12, 1988 | January 12, 1989 | Details |
| Belgium | | Ratification: July 24, 1996 | October 24, 1996 | |
| Belize | | Ratification: November 6, 1990 | February 6, 1991 | |
| Benin | | Ratification: June 14, 1982 | September 14, 1982 | |
| Bhutan | | Ratification: October 17, 2001 | January 17, 2002 | |
| Bolivia (Plurinational State of) | | Ratification: October 4, 1976 | January 4, 1977 | |
| Bosnia and Herzegovina | | Declaration / Notification of Succession: July 12, 1993 | March 6, 1992 | Details |
| Botswana | | Acceptance: November 23, 1998 | February 23, 1999 | |
| Brazil | | Acceptance: September 1, 1977 | December 1, 1977 | Details |
| Brunei Darussalam | | Ratification: August 12, 2011 | November 12, 2011 | |
| Bulgaria | | Acceptance: March 7, 1974 | December 17, 1975 | Details |
| Burkina Faso | | Ratification: April 2, 1987 | July 2, 1987 | |
| Burundi | | Ratification: May 19, 1982 | August 19, 1982 | |
| Cambodia | | Acceptance: November 28, 1991 | February 28, 1992 | |
| Cameroon | | Ratification: December 7, 1982 | March 7, 1983 | |
| Canada | | Acceptance: July 23, 1976 | October 23, 1976 | |
| Cape Verde | | Acceptance: April 28, 1988 | July 28, 1988 | Details |
| Central African Republic | | Ratification: December 22, 1980 | March 22, 1981 | |
| Chad | | Ratification: June 23, 1999 | September 23, 1999 | |
| Chile | | Ratification: February 20, 1980 | May 20, 1980 | |
| China | | Ratification: December 12, 1985 | March 12, 1986 | Details |
| Colombia | | Acceptance: May 24, 1983 | August 24, 1983 | |
| Comoros | | Ratification: September 27, 2000 | December 27, 2000 | |
| Congo | | Ratification: December 10, 1987 | March 10, 1988 | |
| Cook Islands | | Acceptance: January 16, 2009 | April 16, 2009 | |
| Costa Rica | | Ratification: August 23, 1977 | November 23, 1977 | |
| Côte d'Ivoire | | Ratification: January 9, 1981 | April 9, 1981 | |
| Croatia | | Declaration / Notification of Succession: July 6, 1992 | October 8, 1991 | Details |
| Cuba | | Ratification: March 24, 1981 | June 24, 1981 | |
| Cyprus | | Acceptance: August 14, 1975 | December 17, 1975 | |
| Czech Republic | | Declaration / Notification of Succession: March 26, 1993 | January 1, 1993 | Details |
| Democratic People's Republic of Korea | | Acceptance: July 21, 1998 | October 21, 1998 | |
| Democratic Republic of the Congo | | Ratification: September 23, 1974 | December 17, 1975 | Details |
| Denmark | | Ratification: July 25, 1979 | October 25, 1979 | Details |
| Djibouti | | Ratification: August 30, 2007 | November 30, 2007 | |
| Dominica | | Ratification: April 4, 1995 | July 4, 1995 | |
| Dominican Republic | | Ratification: February 12, 1985 | May 12, 1985 | |
| Ecuador | | Acceptance: June 16, 1975 | December 17, 1975 | |
| Egypt | | Ratification: February 7, 1974 | December 17, 1975 | |
| El Salvador | | Acceptance: October 8, 1991 | January 8, 1992 | |
| Equatorial Guinea | | Ratification: March 10, 2010 | June 10, 2010 | |
| Eritrea | | Acceptance: October 24, 2001 | January 24, 2002 | |
| Estonia | | Ratification: October 27, 1995 | January 27, 1996 | |
| Ethiopia | | Ratification: July 6, 1977 | October 6, 1977 | |
| Fiji | | Ratification: November 21, 1990 | February 21, 1991 | |
| Finland | | Ratification: March 4, 1987 | June 4, 1987 | |
| France | | Acceptance: June 27, 1975 | December 17, 1975 | Details |
| Gabon | | Ratification: December 30, 1986 | March 30, 1987 | |
| Gambia | | Ratification: July 1, 1987 | October 1, 1987 | |
| Georgia | | Declaration / Notification of Succession: November 4, 1992 | April 9, 1991 | Details |
| Germany | | Ratification: August 23, 1976 | November 23, 1976 | Details |
| Ghana | | Ratification: July 4, 1975 | December 17, 1975 | |
| Greece | | Ratification: July 17, 1981 | October 17, 1981 | |
| Grenada | | Accession: August 13, 1998 | November 13, 1998 | |
| Guatemala | | Acceptance: January 16, 1979 | April 16, 1979 | |
| Guinea | | Ratification: March 18, 1979 | June 18, 1979 | |
| Guinea-Bissau | | Ratification: January 28, 2006 | April 28, 2006 | |
| Guyana | | Acceptance: June 20, 1977 | September 20, 1977 | |
| Haiti | | Ratification: January 18, 1980 | April 18, 1980 | |
| Holy See | | Accession: October 7, 1982 | January 7, 1983 | Details |
| Honduras | | Ratification: June 8, 1979 | September 8, 1979 | |
| Hungary | | Acceptance: July 15, 1985 | October 15, 1985 | |
| Iceland | | Ratification: December 19, 1995 | March 19, 1996 | |
| India | | Ratification: November 14, 1977 | February 14, 1978 | |
| Indonesia | | Acceptance: July 6, 1989 | October 6, 1989 | |
| Iran (Islamic Republic of) | | Acceptance: February 26, 1975 | December 17, 1975 | |
| Iraq | | Acceptance: March 5, 1974 | December 17, 1975 | Details |
| Ireland | | Ratification: September 16, 1991 | December 16, 1991 | |
| Israel | | Acceptance: October 6, 1999 | January 6, 2000 | Details |
| Italy | | Ratification: June 23, 1978 | September 23, 1978 | |
| Jamaica | | Accession: June 14, 1983 | September 14, 1983 | |
| Japan | | Accession: June 30, 1992 | September 30, 1992 | |
| Jordan | | Ratification: May 5, 1975 | December 17, 1975 | |
| Kazakhstan | | Acceptance: April 29, 1994 | July 29, 1994 | |
| Kenya | | Acceptance: June 5, 1991 | September 5, 1991 | |
| Kiribati | | Acceptance: May 12, 2000 | August 12, 2000 | |
| Kuwait | | Ratification: June 6, 2002 | September 6, 2002 | |
| Kyrgyzstan | | Acceptance: July 3, 1995 | October 3, 1995 | |
| Lao People's Democratic Republic | | Ratification: March 20, 1987 | June 20, 1987 | |
| Latvia | | Acceptance: January 10, 1995 | April 10, 1995 | |
| Lebanon | | Ratification: February 3, 1983 | May 3, 1983 | |
| Lesotho | | Acceptance: November 25, 2003 | February 25, 2004 | |
| Liberia | | Acceptance: March 28, 2002 | June 28, 2002 | |
| Libya | | Ratification: October 13, 1978 | January 13, 1979 | |
| Lithuania | | Acceptance: March 31, 1992 | June 30, 1992 | |
| Luxembourg | | Ratification: September 28, 1983 | December 28, 1983 | |
| Madagascar | | Ratification: July 19, 1983 | October 19, 1983 | |
| Malawi | | Ratification: January 5, 1982 | April 5, 1982 | |
| Malaysia | | Ratification: December 7, 1988 | March 7, 1989 | |
| Maldives | | Acceptance: May 22, 1986 | August 22, 1986 | |
| Mali | | Acceptance: April 5, 1977 | July 5, 1977 | |
| Malta | | Acceptance: November 14, 1978 | February 14, 1979 | |
| Marshall Islands | | Acceptance: April 24, 2002 | July 24, 2002 | |
| Mauritania | | Ratification: March 2, 1981 | June 2, 1981 | |
| Mauritius | | Ratification: September 19, 1995 | December 19, 1995 | |
| Mexico | | Acceptance: February 23, 1984 | May 23, 1984 | |
| Micronesia (Federated States of) | | Acceptance: July 22, 2002 | October 22, 2002 | |
| Monaco | | Ratification: November 7, 1978 | February 7, 1979 | |
| Mongolia | | Acceptance: February 2, 1990 | May 2, 1990 | |
| Montenegro | | Declaration / Notification of Succession: April 26, 2007 | June 3, 2006 | Details |
| Morocco | | Ratification: October 28, 1975 | January 28, 1976 | |
| Mozambique | | Ratification: November 27, 1982 | February 27, 1983 | |
| Myanmar | | Acceptance: April 29, 1994 | July 29, 1994 | |
| Namibia | | Acceptance: April 6, 2000 | July 6, 2000 | |
| Nepal | | Acceptance: June 20, 1978 | September 20, 1978 | |
| Netherlands | | Accession: August 26, 1992 | November 26, 1992 | Details |
| New Zealand | | Ratification: November 22, 1984 | February 22, 1985 | Details |
| Nicaragua | | Acceptance: December 17, 1979 | March 17, 1980 | |
| Niger | | Acceptance: November 13, 1974 | December 17, 1975 | |
| Nigeria | | Ratification: October 23, 1974 | December 17, 1975 | |
| Niue | | Acceptance: January 23, 2001 | April 23, 2001 | |
| Norway | | Ratification: May 12, 1977 | August 12, 1977 | Details |
| Oman | | Acceptance: October 6, 1981 | January 6, 1982 | Details |
| Pakistan | | Ratification: July 23, 1976 | October 23, 1976 | |
| Palau | | Acceptance: June 11, 2002 | September 11, 2002 | |
| Palestine | | Ratification: December 8, 2011 | March 8, 2012 | |
| Panama | | Ratification: March 3, 1978 | June 3, 1978 | |
| Papua New Guinea | | Acceptance: July 28, 1997 | October 28, 1997 | |
| Paraguay | | Ratification: April 27, 1988 | July 27, 1988 | |
| Peru | | Ratification: February 24, 1982 | May 24, 1982 | |
| Philippines | | Ratification: September 19, 1985 | December 19, 1985 | |
| Poland | | Ratification: June 29, 1976 | September 29, 1976 | |
| Portugal | | Ratification: September 30, 1980 | December 30, 1980 | Details |
| Qatar | | Acceptance: September 12, 1984 | December 12, 1984 | |
| Republic of Korea | | Acceptance: September 14, 1988 | December 14, 1988 | |
| Republic of Moldova | | Ratification: September 23, 2002 | December 23, 2002 | Details |
| Romania | | Acceptance: May 16, 1990 | August 16, 1990 | |
| Russian Federation | | Ratification: October 12, 1988 | January 12, 1989 | Details |
| Rwanda | | Acceptance: December 28, 2000 | March 28, 2001 | |
| Saint Kitts and Nevis | | Acceptance: July 10, 1986 | October 10, 1986 | |
| Saint Lucia | | Ratification: October 14, 1991 | January 14, 1992 | |
| Saint Vincent and the Grenadines | | Ratification: February 3, 2003 | May 3, 2003 | |
| Samoa | | Accession: August 28, 2001 | November 28, 2001 | |
| San Marino | | Ratification: October 18, 1991 | January 18, 1992 | |
| Sao Tome and Principe | | Ratification: July 25, 2006 | October 25, 2006 | |
| Saudi Arabia | | Acceptance: August 7, 1978 | November 7, 1978 | |
| Senegal | | Ratification: February 13, 1976 | May 13, 1976 | |
| Serbia | | Declaration / Notification of Succession: September 11, 2001 | April 27, 1992 | Details |
| Seychelles | | Acceptance: April 9, 1980 | July 9, 1980 | |
| Sierra Leone | | Ratification: January 7, 2005 | April 7, 2005 | |
| Singapore | | Acceptance: June 19, 2012 | September 19, 2012 | |
| Slovakia | | Declaration / Notification of Succession: March 31, 1993 | January 1, 1993 | Details |
| Slovenia | | Declaration / Notification of Succession: November 5, 1992 | June 25, 1991 | Details |
| Solomon Islands | | Accession: June 10, 1992 | September 10, 1992 | |
| South Africa | | Ratification: July 10, 1997 | October 10, 1997 | Details |
| Spain | | Acceptance: May 4, 1982 | August 4, 1982 | |
| Sri Lanka | | Acceptance: June 6, 1980 | September 6, 1980 | |
| Sudan | | Ratification: June 6, 1974 | December 17, 1975 | |
| Suriname | | Acceptance: October 23, 1997 | January 23, 1998 | |
| Swaziland | | Ratification: November 30, 2005 | February 28, 2006 | |
| Sweden | | Ratification: January 22, 1985 | April 22, 1985 | |
| Switzerland | | Ratification: September 17, 1975 | December 17, 1975 | |
| Syrian Arab Republic | | Acceptance: August 13, 1975 | December 17, 1975 | Details |
| Tajikistan | | Declaration / Notification of Succession: August 28, 1992 | September 9, 1991 | Details |
| Thailand | | Acceptance: September 17, 1987 | December 17, 1987 | |
| the former Yugoslav Republic of Macedonia | | Declaration / Notification of Succession: April 30, 1997 | November 17, 1991 | Details |
| Togo | | Acceptance: April 15, 1998 | July 15, 1998 | |
| Tonga | | Acceptance: June 3, 2004 | September 3, 2004 | |
| Trinidad and Tobago | | Ratification: February 16, 2005 | May 16, 2005 | |
| Tunisia | | Ratification: March 10, 1975 | December 17, 1975 | |
| Turkey | | Ratification: March 16, 1983 | June 16, 1983 | |
| Turkmenistan | | Declaration / Notification of Succession: September 30, 1994 | October 27, 1991 | Details |
| Uganda | | Acceptance: November 20, 1987 | February 20, 1988 | |
| Ukraine | | Ratification: October 12, 1988 | January 12, 1989 | Details |
| United Arab Emirates | | Accession: May 11, 2001 | August 11, 2001 | |
| United Kingdom | | Ratification: May 29, 1984 | August 29, 1984 | Details |
| United Republic of Tanzania | | Ratification: August 2, 1977 | November 2, 1977 | |
| United States of America | | Ratification: December 7, 1973 | December 17, 1975 | Details |
| Uruguay | | Acceptance: March 9, 1989 | June 9, 1989 | |
| Uzbekistan | | Declaration / Notification of Succession: January 13, 1993 | September 1, 1991 | Details |
| Vanuatu | | Ratification: June 13, 2002 | September 13, 2002 | |
| Venezuela (Bolivarian Republic of) | | Acceptance: October 30, 1990 | January 30, 1991 | |
| Viet Nam | | Acceptance: October 19, 1987 | January 19, 1988 | |
| Yemen | | Ratification: October 7, 1980 | January 7, 1981 | Details |
| Zambia | | Ratification: June 4, 1984 | September 4, 1984 | |
| Zimbabwe | | Ratification: August 16, 1982 | November 16, 1982 | |
