| Contracting Party | Signature | Instrument | In Force | Details |
| Afghanistan | | Accession: September 13, 2005 | December 13, 2005 | |
| Albania | | Accession: March 31, 1992 | June 30, 1992 | |
| Algeria | July 14, 1967 | Ratification: January 16, 1975 | April 16, 1975 | Details |
| Andorra | | Accession: July 28, 1994 | October 28, 1994 | |
| Angola | | Accession: January 15, 1985 | April 15, 1985 | |
| Antigua and Barbuda | | Accession: December 17, 1999 | March 17, 2000 | |
| Argentina | | Accession: July 8, 1980 | October 8, 1980 | Details |
| Armenia | | Accession: January 22, 1993 | April 22, 1993 | |
| Australia | | Accession: May 10, 1972 | August 10, 1972 | Details |
| Austria | July 14, 1967 | Ratification: May 11, 1973 | August 11, 1973 | |
| Azerbaijan | | Accession: September 25, 1995 | December 25, 1995 | |
| Bahamas | | Accession: October 4, 1976 | January 4, 1977 | |
| Bahrain | | Accession: March 22, 1995 | June 22, 1995 | |
| Bangladesh | | Accession: February 11, 1985 | May 11, 1985 | |
| Barbados | | Accession: July 5, 1979 | October 5, 1979 | |
| Belarus | November 16, 1967 | Ratification: March 19, 1969 | April 26, 1970 | Details |
| Belgium | July 14, 1967 | Ratification: October 31, 1974 | January 31, 1975 | Details |
| Belize | | Accession: March 17, 2000 | June 17, 2000 | |
| Benin | | Accession: December 9, 1974 | March 9, 1975 | Details |
| Bhutan | | Accession: December 16, 1993 | March 16, 1994 | |
| Bolivia (Plurinational State of) | | Accession: April 6, 1993 | July 6, 1993 | |
| Bosnia and Herzegovina | | Declaration of Continued Application: June 2, 1993 | March 1, 1992 | Details |
| Botswana | | Accession: January 15, 1998 | April 15, 1998 | |
| Brazil | | Accession: December 20, 1974 | March 20, 1975 | Details |
| Brunei Darussalam | | Accession: January 21, 1994 | April 21, 1994 | |
| Bulgaria | January 11, 1968 | Ratification: February 19, 1970 | May 19, 1970 | Details |
| Burkina Faso | | Accession: May 23, 1975 | August 23, 1975 | Details |
| Burundi | | Accession: December 30, 1976 | March 30, 1977 | |
| Cambodia | | Accession: April 25, 1995 | July 25, 1995 | |
| Cameroon | July 14, 1967 | Ratification: August 3, 1973 | November 3, 1973 | Details |
| Canada | | Accession: March 26, 1970 | June 26, 1970 | |
| Cape Verde | | Accession: April 7, 1997 | July 7, 1997 | |
| Central African Republic | July 14, 1967 | Ratification: May 23, 1978 | August 23, 1978 | Details |
| Chad | | Accession: June 26, 1970 | September 26, 1970 | |
| Chile | | Accession: March 25, 1975 | June 25, 1975 | Details |
| China | | Accession: March 3, 1980 | June 3, 1980 | |
| Colombia | | Accession: February 4, 1980 | May 4, 1980 | |
| Comoros | | Accession: January 3, 2005 | April 3, 2005 | |
| Congo | | Accession: September 2, 1975 | December 2, 1975 | Details |
| Costa Rica | | Accession: March 10, 1981 | June 10, 1981 | |
| Côte d'Ivoire | July 14, 1967 | Ratification: February 1, 1974 | May 1, 1974 | Details |
| Croatia | | Declaration / Notification of Succession: July 28, 1992 | October 8, 1991 | Details |
| Cuba | | Accession: December 27, 1974 | March 27, 1975 | Details |
| Cyprus | | Accession: July 26, 1984 | October 26, 1984 | Details |
| Czech Republic | | Declaration of Continued Application: December 18, 1992 | January 1, 1993 | Details |
| Democratic People's Republic of Korea | | Accession: May 17, 1974 | August 17, 1974 | |
| Democratic Republic of the Congo | July 14, 1967 | Ratification: October 28, 1974 | January 28, 1975 | Details |
| Denmark | July 14, 1967 | Ratification: January 26, 1970 | April 26, 1970 | |
| Djibouti | | Accession: February 13, 2002 | May 13, 2002 | |
| Dominica | | Accession: June 26, 1998 | September 26, 1998 | |
| Dominican Republic | | Accession: March 27, 2000 | June 27, 2000 | |
| Ecuador | July 14, 1967 | Ratification: February 22, 1988 | May 22, 1988 | |
| Egypt | | Accession: January 21, 1975 | April 21, 1975 | Details |
| El Salvador | | Accession: June 18, 1979 | September 18, 1979 | |
| Equatorial Guinea | | Accession: March 26, 1997 | June 26, 1997 | |
| Eritrea | | Accession: November 20, 1996 | February 20, 1997 | |
| Estonia | | Accession: November 5, 1993 | February 5, 1994 | |
| Ethiopia | | Accession: November 19, 1997 | February 19, 1998 | |
| Fiji | | Accession: December 11, 1971 | March 11, 1972 | |
| Finland | July 14, 1967 | Ratification: June 8, 1970 | September 8, 1970 | |
| France | July 14, 1967 | Ratification: July 18, 1974 | October 18, 1974 | Details |
| Gabon | July 14, 1967 | Ratification: March 6, 1975 | June 6, 1975 | Details |
| Gambia | | Accession: September 10, 1980 | December 10, 1980 | |
| Georgia | | Declaration of Continued Application: January 18, 1994 | December 25, 1991 | Details |
| Germany | July 14, 1967 | Ratification: June 19, 1970 | September 19, 1970 | Details |
| Ghana | | Accession: March 12, 1976 | June 12, 1976 | |
| Greece | July 14, 1967 | Ratification: December 4, 1975 | March 4, 1976 | Details |
| Grenada | | Accession: June 22, 1998 | September 22, 1998 | |
| Guatemala | | Accession: January 31, 1983 | April 30, 1983 | |
| Guinea | | Accession: August 13, 1980 | November 13, 1980 | |
| Guinea-Bissau | | Accession: March 28, 1988 | June 28, 1988 | |
| Guyana | | Accession: July 25, 1994 | October 25, 1994 | |
| Haiti | | Accession: August 2, 1983 | November 2, 1983 | |
| Holy See | July 14, 1967 | Ratification: January 20, 1975 | April 20, 1975 | Details |
| Honduras | | Accession: August 15, 1983 | November 15, 1983 | |
| Hungary | January 12, 1968 | Ratification: December 18, 1969 | April 26, 1970 | Details |
| Iceland | July 14, 1967 | Ratification: June 13, 1986 | September 13, 1986 | |
| India | | Accession: January 31, 1975 | May 1, 1975 | Details |
| Indonesia | January 12, 1968 | Ratification: September 18, 1979 | December 18, 1979 | Details |
| Iran (Islamic Republic of) | July 14, 1967 | Ratification: December 14, 2001 | March 14, 2002 | |
| Iraq | | Accession: October 21, 1975 | January 21, 1976 | |
| Ireland | January 12, 1968 | | April 26, 1970 | Details |
| Israel | July 14, 1967 | Ratification: July 30, 1969 | April 26, 1970 | |
| Italy | July 14, 1967 | Ratification: January 20, 1977 | April 20, 1977 | Details |
| Jamaica | | Accession: September 25, 1978 | December 25, 1978 | |
| Japan | July 14, 1967 | Ratification: January 20, 1975 | April 20, 1975 | Details |
| Jordan | | Accession: April 12, 1972 | July 12, 1972 | |
| Kazakhstan | | Declaration of Continued Application: February 16, 1993 | December 25, 1991 | Details |
| Kenya | July 14, 1967 | Ratification: July 5, 1971 | October 5, 1971 | |
| Kiribati | | Accession: April 19, 2013 | July 19, 2013 | |
| Kuwait | | Accession: April 14, 1998 | July 14, 1998 | |
| Kyrgyzstan | | Declaration of Continued Application: February 14, 1994 | December 25, 1991 | Details |
| Lao People's Democratic Republic | | Accession: October 17, 1994 | January 17, 1995 | |
| Latvia | | Accession: October 21, 1992 | January 21, 1993 | |
| Lebanon | | Accession: September 30, 1986 | December 30, 1986 | |
| Lesotho | | Accession: August 18, 1986 | November 18, 1986 | |
| Liberia | | Accession: December 8, 1988 | March 8, 1989 | |
| Libya | | Accession: June 28, 1976 | September 28, 1976 | Details |
| Liechtenstein | July 14, 1967 | Ratification: February 21, 1972 | May 21, 1972 | |
| Lithuania | | Accession: January 30, 1992 | April 30, 1992 | |
| Luxembourg | July 14, 1967 | Ratification: December 19, 1974 | March 19, 1975 | Details |
| Madagascar | July 14, 1967 | Ratification: September 22, 1989 | December 22, 1989 | Details |
| Malawi | | Accession: March 11, 1970 | June 11, 1970 | |
| Malaysia | | Accession: October 1, 1988 | January 1, 1989 | |
| Maldives | | Accession: February 12, 2004 | May 12, 2004 | |
| Mali | | Accession: May 14, 1982 | August 14, 1982 | |
| Malta | | Accession: September 7, 1977 | December 7, 1977 | Details |
| Mauritania | | Accession: June 17, 1976 | September 17, 1976 | Details |
| Mauritius | | Accession: June 21, 1976 | September 21, 1976 | |
| Mexico | July 14, 1967 | Ratification: March 14, 1975 | June 14, 1975 | Details |
| Monaco | July 14, 1967 | Ratification: December 3, 1974 | March 3, 1975 | |
| Mongolia | | Accession: November 28, 1978 | February 28, 1979 | Details |
| Montenegro | | Declaration of Continued Application: December 4, 2006 | June 3, 2006 | Details |
| Morocco | July 14, 1967 | Ratification: April 27, 1971 | July 27, 1971 | Details |
| Mozambique | | Accession: September 23, 1996 | December 23, 1996 | |
| Myanmar | | Accession: February 15, 2001 | May 15, 2001 | |
| Namibia | | Accession: September 23, 1991 | December 23, 1991 | |
| Nepal | | Accession: November 4, 1996 | February 4, 1997 | |
| Netherlands | July 14, 1967 | Ratification: October 9, 1974 | January 9, 1975 | Details |
| New Zealand | | Accession: March 14, 1984 | June 20, 1984 | Details |
| Nicaragua | | Accession: February 5, 1985 | May 5, 1985 | |
| Niger | July 14, 1967 | Ratification: February 18, 1975 | May 18, 1975 | Details |
| Nigeria | | Accession: January 9, 1995 | April 9, 1995 | |
| Norway | July 14, 1967 | Ratification: March 8, 1974 | June 8, 1974 | Details |
| Oman | | Accession: November 19, 1996 | February 19, 1997 | |
| Pakistan | | Accession: October 6, 1976 | January 6, 1977 | |
| Panama | | Accession: June 17, 1983 | September 17, 1983 | |
| Papua New Guinea | | Accession: April 10, 1997 | July 10, 1997 | |
| Paraguay | | Accession: March 20, 1987 | June 20, 1987 | |
| Peru | July 14, 1967 | Ratification: June 4, 1980 | September 4, 1980 | |
| Philippines | July 14, 1967 | Ratification: April 14, 1980 | July 14, 1980 | |
| Poland | January 10, 1968 | Ratification: December 23, 1974 | March 23, 1975 | Details |
| Portugal | July 14, 1967 | Ratification: January 27, 1975 | April 27, 1975 | Details |
| Qatar | | Accession: June 3, 1976 | September 3, 1976 | |
| Republic of Korea | | Accession: December 1, 1978 | March 1, 1979 | |
| Republic of Moldova | | Declaration of Continued Application: June 3, 1993 | December 25, 1991 | Details |
| Romania | July 14, 1967 | Ratification: February 28, 1969 | April 26, 1970 | Details |
| Russian Federation | October 12, 1967 | Ratification: December 4, 1968 | April 26, 1970 | Details |
| Rwanda | | Accession: November 3, 1983 | February 3, 1984 | |
| Saint Kitts and Nevis | | Accession: August 16, 1995 | November 16, 1995 | |
| Saint Lucia | | Accession: May 21, 1993 | August 21, 1993 | |
| Saint Vincent and the Grenadines | | Accession: May 29, 1995 | August 29, 1995 | |
| Samoa | | Accession: July 11, 1997 | October 11, 1997 | Details |
| San Marino | | Accession: March 26, 1991 | June 26, 1991 | |
| Sao Tome and Principe | | Accession: February 12, 1998 | May 12, 1998 | |
| Saudi Arabia | | Accession: February 22, 1982 | May 22, 1982 | |
| Senegal | July 14, 1967 | Ratification: September 19, 1968 | April 26, 1970 | |
| Serbia | | Declaration of Continued Application: September 19, 2006 | April 27, 1992 | Details |
| Seychelles | | Accession: December 16, 1999 | March 16, 2000 | |
| Sierra Leone | | Accession: February 18, 1986 | May 18, 1986 | |
| Singapore | | Accession: September 10, 1990 | December 10, 1990 | |
| Slovakia | | Declaration of Continued Application: December 30, 1992 | January 1, 1993 | Details |
| Slovenia | | Declaration of Continued Application: June 12, 1992 | June 25, 1991 | Details |
| Somalia | | Accession: August 18, 1982 | November 18, 1982 | Details |
| South Africa | July 14, 1967 | Ratification: December 23, 1974 | March 23, 1975 | Details |
| Spain | July 14, 1967 | Ratification: June 6, 1969 | April 26, 1970 | |
| Sri Lanka | | Accession: June 20, 1978 | September 20, 1978 | |
| Sudan | | Accession: November 15, 1973 | February 15, 1974 | |
| Suriname | | Declaration of Continued Application: November 16, 1976 | November 25, 1975 | Details |
| Swaziland | | Accession: May 18, 1988 | August 18, 1988 | |
| Sweden | July 14, 1967 | Ratification: August 12, 1969 | April 26, 1970 | |
| Switzerland | July 14, 1967 | Ratification: January 26, 1970 | April 26, 1970 | |
| Syrian Arab Republic | | Accession: August 18, 2004 | November 18, 2004 | Details |
| Tajikistan | | Declaration of Continued Application: February 14, 1994 | December 25, 1991 | Details |
| Thailand | | Accession: September 25, 1989 | December 25, 1989 | Details |
| the former Yugoslav Republic of Macedonia | | Declaration / Notification of Succession: July 23, 1993 | September 8, 1991 | Details |
| Togo | | Accession: January 28, 1975 | April 28, 1975 | Details |
| Tonga | | Accession: March 14, 2001 | June 14, 2001 | |
| Trinidad and Tobago | | Accession: May 16, 1988 | August 16, 1988 | |
| Tunisia | July 14, 1967 | Ratification: August 28, 1975 | November 28, 1975 | Details |
| Turkey | | Accession: February 12, 1976 | May 12, 1976 | Details |
| Turkmenistan | | Declaration of Continued Application: March 1, 1995 | December 25, 1991 | Details |
| Uganda | | Accession: July 18, 1973 | October 18, 1973 | |
| Ukraine | November 16, 1967 | Ratification: February 12, 1969 | April 26, 1970 | Details |
| United Arab Emirates | | Accession: June 24, 1974 | September 24, 1974 | |
| United Kingdom | July 14, 1967 | Ratification: February 26, 1969 | April 26, 1970 | |
| United Republic of Tanzania | | Accession: September 30, 1983 | December 30, 1983 | |
| United States of America | July 14, 1967 | Ratification: May 25, 1970 | August 25, 1970 | |
| Uruguay | | Accession: September 21, 1979 | December 21, 1979 | |
| Uzbekistan | | Declaration of Continued Application: May 5, 1993 | December 25, 1991 | Details |
| Vanuatu | | Accession: December 2, 2011 | March 2, 2012 | |
| Venezuela (Bolivarian Republic of) | | Accession: August 23, 1984 | November 23, 1984 | Details |
| Viet Nam | | Declaration of Continued Application: April 7, 1981 | July 2, 1976 | Details |
| Yemen | | Accession: December 29, 1978 | March 29, 1979 | Details |
| Zambia | | Accession: February 14, 1977 | May 14, 1977 | |
| Zimbabwe | | Accession: September 29, 1981 | December 29, 1981 | |