| Afghanistan | 16 May 1963 | In Force | |
| Albania | 27 Feb 1997 | In Force | |
| Algeria | 12 Jun 1969 | In Force | |
| Angola | 04 Jun 1976 | In Force | |
| Antigua and Barbuda | 02 Feb 1983 | In Force | |
| Argentina | 18 Jan 1960 | In Force | |
| Armenia | 17 Dec 2004 | In Force | |
| Australia | 07 Jun 1960 | In Force | |
| Austria | 05 Mar 1958 | In Force | |
| Azerbaijan | 09 Aug 2000 | In Force | |
| Bahamas | 25 May 1976 | In Force | |
| Bahrain | 14 Jul 1998 | In Force | |
| Bangladesh | 22 Jun 1972 | In Force | |
| Barbados | 08 May 1967 | In Force | |
| Belarus | 25 Sep 1995 | In Force | |
| Belgium | 23 Jan 1961 | In Force | |
| Belize | 15 Dec 1983 | In Force | |
| Benin | 22 May 1961 | In Force | |
| Bolivia (Plurinational State of) | 11 Jun 1990 | In Force | |
| Bosnia and Herzegovina | 15 Nov 2000 | In Force | |
| Botswana | 05 Jun 1997 | In Force | |
| Brazil | 18 Jun 1965 | In Force | |
| Bulgaria | 23 Mar 1999 | In Force | |
| Burkina Faso | 25 Aug 1997 | In Force | |
| Burundi | 11 Mar 1963 | In Force | |
| Cabo Verde | 03 Apr 1979 | In Force | |
| Cambodia | 23 Aug 1999 | In Force | |
| Cameroon | 03 Sep 1962 | In Force | |
| Canada | 14 Jul 1959 | In Force | |
| Central African Republic | 09 Jun 1964 | In Force | |
| Chad | 08 Jun 1961 | In Force | |
| Chile | 01 Feb 1999 | In Force | |
| China | 12 Aug 2022 | In Force | |
| Colombia | 07 Jun 1963 | In Force | |
| Comoros | 23 Oct 1978 | In Force | |
| Congo | 26 Nov 1999 | In Force | |
| Cook Islands | 12 Jun 2015 | In Force | |
| Costa Rica | 04 May 1959 | In Force | |
| Croatia | 05 Mar 1997 | In Force | |
| Cuba | 02 Jun 1958 | In Force | |
| Cyprus | 23 Sep 1960 | In Force | |
| Czechia | 06 Aug 1996 | In Force | |
| Côte d'Ivoire | 05 May 1961 | In Force | |
| Democratic Republic of the Congo | 20 Jun 2001 | In Force | |
| Denmark | 17 Jan 1958 | In Force | |
| Djibouti | 03 Aug 1978 | In Force | |
| Dominica | 28 Feb 1983 | In Force | |
| Dominican Republic | 23 Jun 1958 | In Force | |
| Ecuador | 05 Feb 1962 | In Force | |
| Egypt | 23 Oct 1958 | In Force | |
| El Salvador | 18 Nov 1958 | In Force | |
| Equatorial Guinea | 13 Aug 2001 | In Force | |
| Eritrea | 22 Feb 2000 | In Force | |
| Estonia | 07 Feb 1996 | In Force | |
| Eswatini | 28 Feb 1979 | In Force | |
| Ethiopia | 24 Mar 1999 | In Force | |
| Fiji | 19 Apr 1974 | In Force | |
| Finland | 27 May 1960 | In Force | |
| France | 18 Dec 1969 | In Force | |
| Gabon | 29 May 1961 | In Force | |
| Gambia | 04 Sep 2000 | In Force | |
| Georgia | 23 Sep 1996 | In Force | |
| Germany | 22 Jun 1959 | In Force | |
| Ghana | 15 Dec 1958 | In Force | |
| Greece | 30 Mar 1962 | In Force | |
| Grenada | 09 Jul 1979 | In Force | |
| Guatemala | 09 Dec 1959 | In Force | |
| Guinea | 11 Jul 1961 | In Force | |
| Guinea-Bissau | 21 Feb 1977 | In Force | |
| Guyana | 08 Jun 1966 | In Force | |
| Haiti | 04 Mar 1958 | In Force | |
| Honduras | 04 Aug 1958 | In Force | |
| Hungary | 04 Jan 1994 | In Force | |
| Iceland | 29 Nov 1960 | In Force | |
| India | 18 May 2000 | In Force | |
| Indonesia | 07 Jun 1999 | In Force | |
| Iran (Islamic Republic of) | 13 Apr 1959 | In Force | |
| Iraq | 15 Jun 1959 | In Force | |
| Ireland | 11 Jun 1958 | In Force | |
| Israel | 10 Apr 1958 | In Force | |
| Italy | 15 Mar 1968 | In Force | |
| Jamaica | 26 Dec 1962 | In Force | |
| Japan | 19 Jul 2022 | In Force | |
| Jordan | 31 Mar 1958 | In Force | |
| Kazakhstan | 18 May 2001 | In Force | |
| Kenya | 13 Jan 1964 | In Force | |
| Kiribati | 03 Feb 2000 | In Force | |
| Kuwait | 21 Sep 1961 | In Force | |
| Kyrgyzstan | 18 Feb 1999 | In Force | |
| Latvia | 27 Jan 1992 | In Force | |
| Lebanon | 01 Jun 1977 | In Force | |
| Lesotho | 14 Jun 2001 | In Force | |
| Liberia | 25 May 1962 | In Force | |
| Libya | 13 Jun 1961 | In Force | |
| Lithuania | 26 Sep 1994 | In Force | |
| Luxembourg | 24 Jul 1964 | In Force | |
| Madagascar | 06 Jun 2007 | In Force | |
| Malawi | 19 Nov 1999 | In Force | |
| Malaysia | 13 Oct 1958 | Not in force | Denounced on 10 Jan 1990 |
| Maldives | 04 Jan 2013 | In Force | |
| Mali | 28 May 1962 | In Force | |
| Malta | 04 Jan 1965 | In Force | |
| Mauritania | 03 Apr 1997 | In Force | |
| Mauritius | 02 Dec 1969 | In Force | |
| Mexico | 01 Jun 1959 | In Force | |
| Mongolia | 15 Mar 2005 | In Force | |
| Montenegro | 03 Jun 2006 | In Force | |
| Morocco | 01 Dec 1966 | In Force | |
| Mozambique | 06 Jun 1977 | In Force | |
| Namibia | 15 Nov 2000 | In Force | |
| Nepal | 30 Aug 2007 | In Force | |
| Netherlands (Kingdom of the) | 18 Feb 1959 | In Force | |
| New Zealand | 14 Jun 1968 | In Force | |
| Nicaragua | 31 Oct 1967 | In Force | |
| Niger | 23 Mar 1962 | In Force | |
| Nigeria | 17 Oct 1960 | In Force | |
| North Macedonia | 15 Jul 2003 | In Force | |
| Norway | 14 Apr 1958 | In Force | |
| Oman | 21 Jul 2005 | In Force | |
| Pakistan | 15 Feb 1960 | In Force | |
| Panama | 16 May 1966 | In Force | |
| Papua New Guinea | 01 May 1976 | In Force | |
| Paraguay | 16 May 1968 | In Force | |
| Peru | 06 Dec 1960 | In Force | |
| Philippines | 17 Nov 1960 | In Force | |
| Poland | 30 Jul 1958 | In Force | |
| Portugal | 23 Nov 1959 | In Force | |
| Qatar | 02 Feb 2007 | In Force | |
| Republic of Moldova | 10 Mar 1993 | In Force | |
| Romania | 03 Aug 1998 | In Force | |
| Russian Federation | 02 Jul 1998 | In Force | |
| Rwanda | 18 Sep 1962 | In Force | |
| Saint Kitts and Nevis | 12 Oct 2000 | In Force | |
| Saint Lucia | 14 May 1980 | In Force | |
| Saint Vincent and the Grenadines | 21 Oct 1998 | In Force | |
| Samoa | 30 Jun 2008 | In Force | |
| San Marino | 01 Feb 1995 | In Force | |
| Sao Tome and Principe | 04 May 2005 | In Force | |
| Saudi Arabia | 15 Jun 1978 | In Force | |
| Senegal | 28 Jul 1961 | In Force | |
| Serbia | 10 Jul 2003 | In Force | |
| Seychelles | 06 Feb 1978 | In Force | |
| Sierra Leone | 13 Jun 1961 | In Force | |
| Singapore | 25 Oct 1965 | Not in force | Denounced on 19 Apr 1979 |
| Slovakia | 29 Sep 1997 | In Force | |
| Slovenia | 24 Jun 1997 | In Force | |
| Solomon Islands | 13 Apr 2012 | In Force | |
| Somalia | 08 Dec 1961 | In Force | |
| South Africa | 05 Mar 1997 | In Force | |
| South Sudan | 29 Apr 2012 | In Force | |
| Spain | 06 Nov 1967 | In Force | |
| Sri Lanka | 07 Jan 2003 | In Force | |
| Sudan | 22 Oct 1970 | In Force | |
| Suriname | 15 Jun 1976 | In Force | |
| Sweden | 02 Jun 1958 | In Force | |
| Switzerland | 18 Jul 1958 | In Force | |
| Syrian Arab Republic | 23 Oct 1958 | In Force | |
| Tajikistan | 23 Sep 1999 | In Force | |
| Thailand | 02 Dec 1969 | In Force | |
| Togo | 10 Jul 1999 | In Force | |
| Trinidad and Tobago | 24 May 1963 | In Force | |
| Tunisia | 12 Jan 1959 | In Force | |
| Turkmenistan | 15 May 1997 | In Force | |
| Türkiye | 29 Mar 1961 | In Force | |
| Uganda | 04 Jun 1963 | In Force | |
| Ukraine | 14 Dec 2000 | In Force | |
| United Arab Emirates | 24 Feb 1997 | In Force | |
| United Kingdom of Great Britain and Northern Ireland | 30 Dec 1957 | In Force | |
| United Republic of Tanzania | 30 Jan 1962 | In Force | |
| United States of America | 25 Sep 1991 | In Force | |
| Uruguay | 22 Nov 1968 | In Force | |
| Uzbekistan | 15 Dec 1997 | In Force | |
| Vanuatu | 28 Aug 2006 | In Force | |
| Venezuela (Bolivarian Republic of) | 16 Nov 1964 | In Force | |
| Viet Nam | 14 Jul 2020 | In Force | |
| Yemen | 14 Apr 1969 | In Force | |
| Zambia | 22 Feb 1965 | In Force | |
| Zimbabwe | 27 Aug 1998 | In Force | |
