| 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 | ||
| Antigua and Barbuda | Accession : July 3, 2019 | October 3, 2019 | ||
| 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 | Details |
| 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 | Details | |
| 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 | Ratification : March 9, 2015 | June 9, 2015 | |
| 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 | Details | |
| 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 | ||
| Cabo Verde | Accession : August 6, 1993 | November 6, 1993 | ||
| 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 | Details | |
| 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 | Details | |
| Costa Rica | December 19, 1966 | Ratification : November 29, 1968 | June 3, 1976 | |
| Croatia | Declaration/Notification of Succession : October 12, 1992 | October 8, 1991 | Details | |
| 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 | |
| Côte d'Ivoire | Accession : March 26, 1992 | June 26, 1992 | ||
| 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 | Details | |
| Eswatini | Accession : March 26, 2004 | June 26, 2004 | ||
| Ethiopia | Accession : June 11, 1993 | September 11, 1993 | ||
| Fiji | Accession : August 16, 2018 | November 16, 2018 | ||
| 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 | |
| Haiti | Accession : October 8, 2013 | January 8, 2014 | ||
| 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 | Details | |
| 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 |
| Marshall Islands | Accession : March 12, 2018 | June 12, 2018 | ||
| 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 | Details | |
| Morocco | January 19, 1977 | Ratification : May 3, 1979 | August 3, 1979 | |
| Myanmar | July 16, 2015 | Ratification : October 6, 2017 | January 6, 2018 | Details |
| Namibia | Accession : November 28, 1994 | February 28, 1995 | ||
| Nepal | Accession : May 14, 1991 | August 14, 1991 | ||
| Netherlands (Kingdom of the) | 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 | ||
| North Macedonia | Declaration/Notification of Succession : January 18, 1994 | November 17, 1991 | Details | |
| Norway | March 20, 1968 | Ratification : September 13, 1972 | January 3, 1976 | Details |
| Oman | Accession : June 9, 2020 | September 9, 2020 | Details | |
| Pakistan | November 3, 2004 | Ratification : April 17, 2008 | July 17, 2008 | Details |
| Palau | September 20, 2011 | |||
| Palestine | Accession : April 2, 2014 | July 2, 2014 | ||
| 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 | Details |
| Portugal | October 7, 1976 | Ratification : July 31, 1978 | October 31, 1978 | Details |
| Qatar | Accession : May 21, 2018 | August 21, 2018 | Details | |
| Republic of Korea | Accession : April 10, 1990 | July 10, 1990 | ||
| Republic of Moldova | Accession : January 26, 1993 | April 26, 1993 | Details | |
| 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 | Details | |
| Saint Kitts and Nevis | Accession : November 1, 2024 | |||
| 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 | Ratification : January 10, 2017 | April 10, 2017 | |
| Senegal | July 6, 1970 | Ratification : February 13, 1978 | May 13, 1978 | |
| Serbia | Declaration/Notification of Succession : March 12, 2001 | April 27, 1992 | Details | |
| 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 | Details | |
| Solomon Islands | Declaration/Notification of Succession : March 17, 1982 | July 7, 1978 | Details | |
| Somalia | Accession : January 24, 1990 | April 24, 1990 | ||
| South Africa | October 3, 1994 | Ratification : January 12, 2015 | April 12, 2015 | Details |
| South Sudan | Accession : February 5, 2024 | May 5, 2024 | ||
| 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 | ||
| Sweden | September 29, 1967 | Ratification : December 6, 1971 | January 3, 1976 | Details |
| Switzerland | Accession : June 18, 1992 | September 18, 1992 | Details | |
| 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 | |
| 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 | |
| Turkmenistan | Accession : May 1, 1997 | August 1, 1997 | ||
| Türkiye | August 15, 2000 | Ratification : September 23, 2003 | December 23, 2003 | Details |
| 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 |