| Contracting Parties/Signatories | Signature | Instrument | In Force | Details |
|---|
| Afghanistan | | Accession: January 24, 1983 | April 24, 1983 | Details |
| Albania | | Accession: October 4, 1991 | January 4, 1992 | |
| Algeria | December 10, 1968 | Ratification: September 12, 1989 | December 12, 1989 | Details |
| Angola | | Accession: January 10, 1992 | April 10, 1992 | |
| Argentina | February 19, 1968 | Ratification: August 8, 1986 | November 8, 1986 | Details |
| Armenia | | Accession: September 13, 1993 | December 13, 1993 | |
| Australia | December 18, 1972 | Ratification: December 10, 1975 | March 10, 1976 | |
| Austria | January 3, 1976 | Ratification: September 10, 1978 | December 10, 1978 | |
| Azerbaijan | | Accession: August 13, 1992 | November 13, 1992 | |
| Bahamas | December 4, 2008 | Ratification: December 23, 2008 | March 23, 2009 | Details |
| Bahrain | | Accession: September 27, 2007 | December 27, 2007 | |
| Bangladesh | | Accession: October 5, 1998 | January 5, 1999 | Details |
| Barbados | | Accession: January 3, 1976 | January 3, 1976 | Details |
| Belarus | March 19, 1968 | Ratification: November 12, 1973 | January 3, 1976 | Details |
| Belgium | December 10, 1968 | Ratification: April 21, 1983 | July 21, 1983 | Details |
| Belize | September 6, 2000 | | | |
| Benin | | Accession: March 12, 1992 | June 12, 1992 | |
| Bolivia (Plurinational State of) | | Accession: August 12, 1982 | November 12, 1982 | |
| Bosnia and Herzegovina | | Declaration / Notification of Succession: September 1, 1993 | March 6, 1992 | |
| Brazil | | Accession: January 24, 1992 | April 24, 1992 | |
| Bulgaria | October 8, 1968 | Ratification: September 21, 1970 | January 3, 1976 | Details |
| Burkina Faso | | Accession: January 4, 1999 | April 4, 1999 | |
| Burundi | | Accession: May 9, 1990 | August 9, 1990 | |
| Cambodia | October 17, 1980 | Accession: May 26, 1992 | August 26, 1992 | Details |
| Cameroon | | Accession: June 27, 1984 | September 27, 1984 | |
| Canada | | Accession: May 19, 1976 | August 19, 1976 | |
| Cape Verde | | Accession: August 6, 1993 | November 6, 1993 | |
| Central African Republic | | Accession: May 8, 1981 | August 8, 1981 | |
| Chad | | Accession: June 9, 1995 | September 9, 1995 | |
| Chile | September 16, 1969 | Ratification: February 10, 1972 | January 3, 1976 | |
| China | October 27, 1997 | Ratification: March 27, 2001 | June 27, 2001 | Details |
| Colombia | December 21, 1966 | Ratification: October 29, 1969 | January 3, 1976 | |
| Comoros | September 25, 2008 | | | |
| Congo | | Accession: October 5, 1983 | January 5, 1984 | |
| Costa Rica | December 19, 1966 | Ratification: November 29, 1968 | June 3, 1976 | |
| Côte d'Ivoire | | Accession: March 26, 1992 | June 26, 1992 | |
| Croatia | | Declaration / Notification of Succession: October 12, 1992 | October 8, 1991 | |
| Cuba | February 28, 2008 | | | Details |
| Cyprus | January 9, 1967 | Ratification: April 2, 1969 | January 3, 1976 | Details |
| Czech Republic | | Declaration / Notification of Succession: February 22, 1993 | January 1, 1993 | Details |
| Democratic People's Republic of Korea | | Accession: September 14, 1981 | December 14, 1981 | |
| Democratic Republic of the Congo | | Accession: November 1, 1976 | February 1, 1977 | |
| Denmark | March 20, 1968 | Ratification: January 6, 1972 | January 3, 1976 | Details |
| Djibouti | | Accession: November 5, 2002 | February 5, 2003 | |
| Dominica | | Accession: June 17, 1993 | September 17, 1993 | |
| Dominican Republic | | Accession: January 4, 1978 | April 4, 1978 | |
| Ecuador | September 29, 1967 | Ratification: March 6, 1969 | January 3, 1976 | |
| Egypt | August 4, 1967 | Ratification: January 14, 1982 | April 14, 1982 | Details |
| El Salvador | September 21, 1967 | Ratification: November 30, 1979 | February 29, 1980 | |
| Equatorial Guinea | | Accession: September 25, 1987 | December 25, 1987 | |
| Eritrea | | Accession: April 17, 2001 | July 17, 2001 | |
| Estonia | | Accession: October 21, 1991 | January 21, 1992 | |
| Ethiopia | | Accession: June 11, 1993 | September 11, 1993 | |
| Finland | October 11, 1967 | Ratification: August 19, 1975 | January 3, 1976 | Details |
| France | | Accession: November 4, 1980 | February 4, 1981 | Details |
| Gabon | | Accession: January 21, 1983 | April 21, 1983 | |
| Gambia | | Accession: December 29, 1978 | March 29, 1979 | |
| Georgia | | Accession: May 3, 1994 | August 3, 1994 | |
| Germany | October 9, 1968 | Ratification: December 17, 1973 | January 3, 1976 | Details |
| Ghana | September 7, 2000 | Ratification: September 7, 2000 | December 7, 2000 | |
| Greece | | Accession: May 16, 1985 | August 16, 1985 | Details |
| Grenada | | Accession: September 6, 1991 | December 6, 1991 | |
| Guatemala | | Accession: May 19, 1988 | August 19, 1988 | |
| Guinea | February 28, 1967 | Ratification: January 24, 1978 | April 24, 1978 | Details |
| Guinea-Bissau | | Accession: July 2, 1992 | October 2, 1992 | |
| Guyana | August 22, 1968 | Ratification: February 15, 1977 | May 15, 1977 | |
| Honduras | December 19, 1966 | Ratification: February 17, 1981 | May 17, 1981 | |
| Hungary | March 25, 1969 | Ratification: January 17, 1974 | January 3, 1976 | Details |
| Iceland | December 30, 1968 | Ratification: August 22, 1979 | November 22, 1979 | |
| India | | Accession: April 10, 1979 | July 10, 1979 | Details |
| Indonesia | | Accession: February 23, 2006 | May 23, 2006 | Details |
| Iran (Islamic Republic of) | April 4, 1968 | Ratification: June 24, 1975 | January 3, 1976 | |
| Iraq | February 18, 1968 | Ratification: January 25, 1971 | January 3, 1976 | Details |
| Ireland | October 1, 1973 | Ratification: December 8, 1989 | March 8, 1990 | Details |
| Israel | December 19, 1966 | Ratification: October 3, 1991 | January 3, 1992 | Details |
| Italy | January 18, 1967 | Ratification: September 15, 1978 | December 15, 1978 | Details |
| Jamaica | December 19, 1966 | Ratification: October 3, 1975 | January 3, 1976 | |
| Japan | May 30, 1978 | Ratification: June 21, 1979 | September 21, 1979 | Details |
| Jordan | June 30, 1972 | Ratification: May 28, 1975 | January 3, 1976 | |
| Kazakhstan | December 2, 2003 | Ratification: January 24, 2006 | April 24, 2006 | |
| Kenya | | Accession: May 1, 1972 | January 3, 1976 | Details |
| Kuwait | | Accession: May 21, 1996 | August 21, 1996 | |
| Kyrgyzstan | | Accession: October 7, 1994 | January 7, 1995 | |
| Lao People's Democratic Republic | December 7, 2000 | Ratification: February 13, 2007 | May 13, 2007 | |
| Latvia | | Accession: April 14, 1992 | July 14, 1992 | Details |
| Lebanon | | Accession: November 3, 1972 | January 3, 1976 | |
| Lesotho | | Accession: September 9, 1992 | December 9, 1992 | |
| Liberia | April 18, 1967 | Ratification: September 22, 2004 | December 22, 2004 | |
| Libya | | Accession: May 15, 1970 | January 3, 1976 | Details |
| Liechtenstein | | Accession: December 10, 1998 | March 10, 1999 | |
| Lithuania | | Accession: November 20, 1991 | February 20, 1992 | |
| Luxembourg | November 26, 1974 | Ratification: August 18, 1983 | November 18, 1983 | |
| Madagascar | April 14, 1970 | Ratification: September 22, 1971 | January 3, 1976 | Details |
| Malawi | | Accession: December 22, 1993 | March 22, 1994 | |
| Maldives | | Accession: September 19, 2006 | December 19, 2006 | |
| Mali | | Accession: July 16, 1974 | January 3, 1976 | |
| Malta | October 22, 1968 | Ratification: September 13, 1990 | December 13, 1990 | Details |
| Mauritania | | Accession: November 17, 2004 | February 17, 2005 | |
| Mauritius | | Accession: December 12, 1973 | January 3, 1976 | |
| Mexico | | Accession: March 23, 1981 | June 23, 1981 | Details |
| Monaco | June 26, 1997 | Ratification: August 28, 1997 | November 28, 1997 | Details |
| Mongolia | June 5, 1968 | Ratification: November 18, 1974 | January 3, 1976 | Details |
| Montenegro | | Declaration / Notification of Succession: October 23, 2006 | June 3, 2006 | |
| Morocco | January 19, 1977 | Ratification: May 3, 1979 | August 3, 1979 | |
| Namibia | | Accession: November 28, 1994 | February 28, 1995 | |
| Nepal | | Accession: May 14, 1991 | August 14, 1991 | |
| Netherlands | June 25, 1969 | Ratification: December 11, 1978 | March 11, 1979 | Details |
| New Zealand | November 12, 1968 | Ratification: December 28, 1978 | March 28, 1979 | Details |
| Nicaragua | | Accession: March 12, 1980 | June 12, 1980 | |
| Niger | | Accession: March 7, 1986 | June 7, 1986 | |
| Nigeria | | Accession: July 29, 1993 | October 29, 1993 | |
| Norway | March 20, 1968 | Ratification: September 13, 1972 | January 3, 1976 | Details |
| Pakistan | November 3, 2004 | Ratification: April 17, 2008 | July 17, 2008 | Details |
| Palau | September 20, 2011 | | | |
| Panama | July 27, 1976 | Ratification: March 8, 1977 | June 8, 1977 | |
| Papua New Guinea | | Accession: July 21, 2008 | October 21, 2008 | |
| Paraguay | | Accession: June 10, 1992 | September 10, 1992 | |
| Peru | August 11, 1977 | Ratification: April 28, 1978 | July 28, 1978 | |
| Philippines | December 19, 1966 | Ratification: June 7, 1974 | January 3, 1976 | |
| Poland | March 2, 1967 | Ratification: March 18, 1977 | June 18, 1977 | |
| Portugal | October 7, 1976 | Ratification: July 31, 1978 | October 31, 1978 | Details |
| Republic of Korea | | Accession: April 10, 1990 | July 10, 1990 | |
| Republic of Moldova | | Accession: January 26, 1993 | April 26, 1993 | |
| Romania | June 27, 1968 | Ratification: December 9, 1974 | January 3, 1976 | Details |
| Russian Federation | March 18, 1968 | Ratification: October 16, 1973 | January 3, 1976 | Details |
| Rwanda | | Accession: April 16, 1975 | January 3, 1976 | |
| Saint Vincent and the Grenadines | | Accession: November 9, 1981 | February 9, 1982 | |
| San Marino | | Accession: October 18, 1985 | January 18, 1986 | |
| Sao Tome and Principe | October 31, 1995 | | | |
| Senegal | July 6, 1970 | Ratification: February 13, 1978 | May 13, 1978 | |
| Serbia | | Declaration / Notification of Succession: March 12, 2001 | April 27, 1992 | |
| Seychelles | | Accession: May 5, 1992 | August 5, 1992 | |
| Sierra Leone | | Accession: August 23, 1996 | November 23, 1996 | |
| Slovakia | | Declaration / Notification of Succession: May 28, 1993 | January 1, 1993 | Details |
| Slovenia | | Declaration / Notification of Succession: July 6, 1992 | June 25, 1991 | |
| Solomon Islands | | Declaration / Notification of Succession: March 17, 1982 | July 7, 1978 | |
| Somalia | | Accession: January 24, 1990 | April 24, 1990 | |
| South Africa | October 3, 1994 | | | |
| Spain | September 28, 1976 | Ratification: April 27, 1977 | July 27, 1977 | Details |
| Sri Lanka | | Accession: June 11, 1980 | September 11, 1980 | |
| Sudan | | Accession: March 18, 1986 | June 18, 1986 | |
| Suriname | | Accession: December 28, 1976 | March 28, 1977 | |
| Swaziland | | Accession: March 26, 2004 | June 26, 2004 | |
| Sweden | September 29, 1967 | Ratification: December 6, 1971 | January 3, 1976 | Details |
| Switzerland | | Accession: June 18, 1992 | September 18, 1992 | |
| Syrian Arab Republic | | Accession: April 21, 1969 | January 3, 1976 | Details |
| Tajikistan | | Accession: January 4, 1999 | April 4, 1999 | |
| Thailand | | Accession: September 5, 1999 | December 5, 1999 | Details |
| the former Yugoslav Republic of Macedonia | | Declaration / Notification of Succession: January 18, 1994 | November 17, 1991 | |
| Timor-Leste | | Accession: April 16, 2003 | July 16, 2003 | |
| Togo | | Accession: May 24, 1984 | August 24, 1984 | |
| Trinidad and Tobago | | Accession: December 8, 1978 | March 8, 1979 | Details |
| Tunisia | April 30, 1968 | Ratification: March 18, 1969 | January 3, 1976 | |
| Turkey | August 15, 2000 | Ratification: September 23, 2003 | December 23, 2003 | Details |
| Turkmenistan | | Accession: May 1, 1997 | August 1, 1997 | |
| Uganda | | Accession: January 21, 1987 | April 21, 1987 | |
| Ukraine | March 20, 1968 | Ratification: November 12, 1973 | January 3, 1976 | Details |
| United Kingdom | September 16, 1968 | Ratification: May 20, 1976 | August 20, 1976 | Details |
| United Republic of Tanzania | | Accession: June 11, 1976 | September 11, 1976 | |
| United States of America | October 5, 1977 | | | |
| Uruguay | February 21, 1967 | Ratification: April 1, 1970 | January 3, 1976 | |
| Uzbekistan | | Accession: September 28, 1995 | December 28, 1995 | |
| Venezuela (Bolivarian Republic of) | June 24, 1969 | Ratification: May 10, 1978 | August 10, 1978 | |
| Viet Nam | | Accession: September 24, 1982 | December 24, 1982 | Details |
| Yemen | | Accession: February 9, 1987 | May 9, 1987 | Details |
| Zambia | | Accession: April 10, 1984 | August 10, 1984 | Details |
| Zimbabwe | | Accession: May 13, 1991 | August 13, 1991 | |
