| Contracting Parties/Signatories | Signature | Instrument | In Force | Details |
|---|
| Afghanistan | December 8, 1949 | Ratification: September 26, 1956 | March 26, 1957 | |
| Albania | December 12, 1949 | Ratification: May 27, 1957 | November 27, 1957 | Details |
| Algeria | | Accession: June 20, 1960 | December 20, 1960 | |
| Andorra | | Accession: September 17, 1993 | March 17, 1994 | |
| Angola | | Accession: September 20, 1984 | March 20, 1985 | |
| Antigua and Barbuda | | Declaration / Notification of Succession: October 6, 1986 | November 1, 1981 | |
| Argentina | December 8, 1949 | Ratification: September 18, 1956 | March 18, 1957 | |
| Armenia | | Accession: June 7, 1993 | December 7, 1993 | |
| Australia | January 4, 1950 | Ratification: October 14, 1958 | April 14, 1959 | |
| Austria | August 12, 1949 | Ratification: August 27, 1953 | February 27, 1954 | |
| Azerbaijan | | Accession: June 1, 1993 | December 1, 1993 | |
| Bahamas | | Declaration / Notification of Succession: July 11, 1975 | July 10, 1973 | |
| Bahrain | | Accession: November 30, 1971 | May 30, 1972 | |
| Bangladesh | | Declaration / Notification of Succession: April 4, 1972 | March 26, 1971 | Details |
| Barbados | | Declaration / Notification of Succession: September 10, 1968 | November 30, 1966 | |
| Belarus | December 12, 1949 | Ratification: August 3, 1954 | February 3, 1955 | Details |
| Belgium | December 8, 1949 | Ratification: September 3, 1952 | March 3, 1953 | |
| Belize | | Accession: June 29, 1984 | December 29, 1984 | |
| Benin | | Declaration / Notification of Succession: December 14, 1961 | August 1, 1960 | Details |
| Bhutan | | Accession: January 10, 1991 | July 10, 1991 | |
| Bolivia (Plurinational State of) | December 8, 1949 | Ratification: December 10, 1976 | June 10, 1977 | |
| Bosnia and Herzegovina | | Declaration / Notification of Succession: December 31, 1992 | March 6, 1992 | |
| Botswana | | Accession: March 29, 1968 | September 29, 1968 | |
| Brazil | December 8, 1949 | Ratification: June 29, 1957 | December 29, 1957 | |
| Brunei Darussalam | | Accession: October 14, 1991 | April 14, 1992 | |
| Bulgaria | December 28, 1949 | Ratification: July 22, 1954 | January 22, 1955 | |
| Burkina Faso | | Declaration / Notification of Succession: November 7, 1961 | August 5, 1960 | Details |
| Burundi | | Declaration / Notification of Succession: December 27, 1971 | July 1, 1962 | |
| Cambodia | | Accession: December 8, 1958 | June 8, 1959 | |
| Cameroon | | Declaration / Notification of Succession: September 16, 1963 | January 1, 1960 | |
| Canada | December 8, 1949 | Ratification: May 14, 1965 | November 14, 1965 | |
| Cape Verde | | Accession: May 11, 1984 | November 11, 1984 | |
| Central African Republic | | Declaration / Notification of Succession: August 1, 1966 | August 13, 1960 | |
| Chad | | Accession: August 5, 1970 | February 5, 1971 | |
| Chile | August 12, 1949 | Ratification: October 12, 1950 | April 12, 1951 | |
| China | December 10, 1949 | Ratification: December 28, 1956 | June 28, 1957 | Details |
| Colombia | August 12, 1949 | Ratification: November 8, 1961 | May 8, 1962 | |
| Comoros | | Accession: November 21, 1985 | May 21, 1986 | |
| Congo | | Declaration / Notification of Succession: February 4, 1967 | August 15, 1960 | |
| Cook Islands | | Declaration / Notification of Succession: May 7, 2002 | June 11, 2001 | |
| Costa Rica | | Accession: October 15, 1969 | April 15, 1970 | |
| Côte d'Ivoire | | Declaration / Notification of Succession: December 28, 1961 | August 7, 1960 | |
| Croatia | | Declaration / Notification of Succession: May 11, 1992 | October 8, 1991 | |
| Cuba | August 12, 1949 | Ratification: April 15, 1954 | October 15, 1954 | |
| Cyprus | | Accession: May 23, 1962 | November 23, 1962 | |
| Czech Republic | | Declaration / Notification of Succession: February 5, 1993 | January 1, 1993 | |
| Democratic People's Republic of Korea | | Accession: August 27, 1957 | February 27, 1958 | Details |
| Democratic Republic of the Congo | | Declaration / Notification of Succession: February 24, 1961 | June 30, 1960 | Details |
| Denmark | August 12, 1949 | Ratification: June 27, 1951 | December 27, 1951 | |
| Djibouti | | Declaration / Notification of Succession: March 6, 1978 | June 27, 1977 | |
| Dominica | | Declaration / Notification of Succession: September 28, 1981 | November 3, 1978 | |
| Dominican Republic | | Accession: January 22, 1958 | July 22, 1958 | |
| Ecuador | August 12, 1949 | Ratification: August 11, 1954 | February 11, 1955 | |
| Egypt | December 8, 1949 | Ratification: November 10, 1952 | May 10, 1953 | |
| El Salvador | December 8, 1949 | Ratification: June 17, 1953 | December 17, 1953 | |
| Equatorial Guinea | | Accession: July 24, 1986 | January 24, 1987 | |
| Eritrea | | Accession: August 14, 2000 | August 14, 2000 | |
| Estonia | | Accession: January 18, 1993 | July 18, 1993 | |
| Ethiopia | December 8, 1949 | Ratification: October 2, 1969 | April 2, 1970 | |
| Fiji | | Declaration / Notification of Succession: August 9, 1971 | October 10, 1970 | |
| Finland | December 8, 1949 | Ratification: February 22, 1955 | August 22, 1955 | |
| France | December 8, 1949 | Ratification: June 28, 1951 | December 28, 1951 | |
| Gabon | | Declaration / Notification of Succession: February 26, 1965 | August 17, 1960 | |
| Gambia | | Declaration / Notification of Succession: October 20, 1966 | February 18, 1965 | |
| Georgia | | Accession: September 14, 1993 | March 14, 1994 | |
| Germany | | Accession: September 3, 1954 | March 3, 1955 | Details |
| Ghana | | Accession: August 2, 1958 | February 2, 1959 | |
| Greece | December 22, 1949 | Ratification: June 5, 1956 | December 5, 1956 | |
| Grenada | | Declaration / Notification of Succession: April 13, 1981 | February 7, 1974 | |
| Guatemala | August 12, 1949 | Ratification: May 14, 1952 | November 14, 1952 | |
| Guinea | | Accession: July 11, 1984 | January 11, 1985 | |
| Guinea-Bissau | | Accession: February 21, 1974 | August 21, 1974 | Details |
| Guyana | | Declaration / Notification of Succession: July 22, 1968 | May 26, 1966 | |
| Haiti | | Accession: April 11, 1957 | October 11, 1957 | |
| Holy See | December 8, 1949 | Ratification: February 22, 1951 | August 22, 1951 | |
| Honduras | | Accession: December 31, 1965 | June 30, 1966 | |
| Hungary | December 8, 1949 | Ratification: August 3, 1954 | February 3, 1955 | |
| Iceland | | Accession: August 10, 1965 | February 10, 1966 | |
| India | December 16, 1949 | Ratification: November 9, 1950 | May 9, 1951 | |
| Indonesia | | Accession: September 30, 1958 | March 30, 1959 | |
| Iran (Islamic Republic of) | December 8, 1949 | Ratification: February 20, 1957 | August 20, 1957 | Details |
| Iraq | | Accession: February 14, 1956 | August 14, 1956 | |
| Ireland | December 19, 1949 | Ratification: September 27, 1962 | March 27, 1963 | |
| Israel | December 8, 1949 | Ratification: July 6, 1951 | January 6, 1952 | Details |
| Italy | December 8, 1949 | Ratification: December 17, 1951 | June 17, 1952 | |
| Jamaica | | Declaration / Notification of Succession: July 20, 1964 | August 6, 1962 | |
| Japan | | Accession: April 21, 1953 | October 21, 1953 | |
| Jordan | | Accession: May 29, 1951 | November 29, 1951 | |
| Kazakhstan | | Declaration / Notification of Succession: May 5, 1992 | December 21, 1991 | |
| Kenya | | Accession: September 20, 1966 | March 20, 1967 | |
| Kiribati | | Declaration / Notification of Succession: January 5, 1989 | July 12, 1979 | |
| Kuwait | | Accession: September 2, 1967 | March 2, 1968 | Details |
| Kyrgyzstan | | Declaration / Notification of Succession: September 18, 1992 | December 21, 1991 | |
| Lao People's Democratic Republic | | Accession: October 29, 1956 | April 29, 1957 | |
| Latvia | | Accession: December 24, 1991 | June 24, 1992 | |
| Lebanon | December 8, 1949 | Ratification: April 10, 1951 | October 10, 1951 | |
| Lesotho | | Declaration / Notification of Succession: May 20, 1968 | October 4, 1966 | |
| Liberia | | Accession: March 29, 1954 | September 29, 1954 | |
| Libya | | Accession: May 22, 1956 | November 22, 1956 | |
| Liechtenstein | August 12, 1949 | Ratification: September 21, 1950 | March 21, 1951 | |
| Lithuania | | Accession: October 3, 1996 | April 3, 1997 | |
| Luxembourg | December 8, 1949 | Ratification: July 1, 1953 | January 1, 1954 | |
| Madagascar | | Declaration / Notification of Succession: July 18, 1963 | June 26, 1960 | |
| Malawi | | Declaration / Notification of Succession: January 5, 1968 | July 5, 1968 | |
| Malaysia | | Accession: August 24, 1962 | February 24, 1963 | |
| Maldives | | Accession: June 18, 1991 | December 18, 1991 | |
| Mali | | Accession: May 24, 1965 | November 24, 1965 | |
| Malta | | Declaration / Notification of Succession: August 22, 1968 | September 21, 1964 | |
| Marshall Islands | | Accession: June 1, 2004 | December 1, 2004 | |
| Mauritania | | Declaration / Notification of Succession: October 30, 1962 | November 28, 1960 | |
| Mauritius | | Declaration / Notification of Succession: August 18, 1970 | March 12, 1968 | |
| Mexico | December 8, 1949 | Ratification: October 29, 1952 | April 29, 1953 | |
| Micronesia (Federated States of) | | Accession: September 19, 1995 | March 19, 1996 | |
| Monaco | August 12, 1949 | Ratification: July 5, 1950 | January 5, 1951 | |
| Mongolia | | Accession: December 20, 1958 | June 20, 1959 | |
| Montenegro | | Accession: August 2, 2006 | February 2, 2007 | |
| Morocco | | Accession: July 26, 1956 | January 26, 1957 | |
| Mozambique | | Accession: March 14, 1983 | September 14, 1983 | |
| Myanmar | | Accession: August 25, 1992 | February 25, 1993 | |
| Namibia | | Declaration / Notification of Succession: August 22, 1991 | March 21, 1990 | |
| Nauru | | Accession: June 27, 2006 | December 27, 2006 | |
| Nepal | | Accession: February 7, 1964 | August 7, 1964 | |
| Netherlands | December 8, 1949 | Ratification: August 3, 1954 | February 3, 1955 | |
| New Zealand | February 11, 1950 | Ratification: May 2, 1959 | November 2, 1959 | Details |
| Nicaragua | August 12, 1949 | Ratification: December 17, 1953 | June 17, 1954 | |
| Niger | | Declaration / Notification of Succession: April 21, 1964 | August 3, 1960 | |
| Nigeria | | Declaration / Notification of Succession: June 20, 1961 | October 1, 1960 | |
| Norway | August 12, 1949 | Ratification: August 3, 1951 | February 3, 1952 | |
| Oman | | Accession: January 31, 1974 | July 31, 1974 | |
| Pakistan | August 12, 1949 | Ratification: June 12, 1951 | December 12, 1951 | Details |
| Palau | | Accession: June 25, 1996 | December 25, 1996 | |
| Palestine | | | | Details |
| Panama | | Accession: February 10, 1956 | August 10, 1956 | |
| Papua New Guinea | | Declaration / Notification of Succession: May 26, 1976 | September 16, 1975 | |
| Paraguay | December 10, 1949 | Ratification: October 23, 1961 | April 23, 1962 | |
| Peru | August 12, 1949 | Ratification: February 15, 1956 | August 15, 1956 | |
| Philippines | December 8, 1949 | Ratification: October 6, 1952 | April 6, 1953 | |
| Poland | December 8, 1949 | Ratification: November 26, 1954 | May 26, 1955 | |
| Portugal | February 11, 1950 | Ratification: March 14, 1961 | September 14, 1961 | Details |
| Qatar | | Accession: October 15, 1975 | April 15, 1976 | |
| Republic of Korea | | Accession: August 16, 1966 | August 16, 1966 | Details |
| Republic of Moldova | | Accession: May 24, 1993 | November 24, 1993 | |
| Romania | February 10, 1950 | Ratification: June 1, 1954 | December 1, 1954 | |
| Russian Federation | December 12, 1949 | Ratification: May 10, 1954 | November 10, 1954 | Details |
| Rwanda | | Declaration / Notification of Succession: May 5, 1964 | July 1, 1962 | |
| Saint Kitts and Nevis | | Declaration / Notification of Succession: February 14, 1986 | September 19, 1983 | |
| Saint Lucia | | Declaration / Notification of Succession: September 18, 1981 | February 22, 1979 | |
| Saint Vincent and the Grenadines | | Accession: April 1, 1981 | October 1, 1981 | |
| Samoa | | Declaration / Notification of Succession: August 23, 1984 | January 1, 1962 | |
| San Marino | | Accession: August 29, 1953 | February 28, 1954 | |
| Sao Tome and Principe | | Accession: May 21, 1976 | November 21, 1976 | |
| Saudi Arabia | | Accession: May 18, 1963 | November 18, 1963 | |
| Senegal | | Declaration / Notification of Succession: May 18, 1963 | August 20, 1960 | |
| Serbia | | Declaration / Notification of Succession: October 16, 2001 | April 27, 1992 | |
| Seychelles | | Accession: November 8, 1984 | May 8, 1985 | |
| Sierra Leone | | Declaration / Notification of Succession: June 10, 1965 | April 27, 1961 | |
| Singapore | | Accession: April 27, 1973 | October 27, 1973 | |
| Slovakia | | Declaration / Notification of Succession: April 2, 1993 | January 1, 1993 | |
| Slovenia | | Declaration / Notification of Succession: March 26, 1992 | June 25, 1991 | |
| Solomon Islands | | Declaration / Notification of Succession: July 6, 1981 | July 7, 1978 | |
| Somalia | | Accession: July 12, 1962 | January 12, 1963 | |
| South Africa | | Accession: March 31, 1952 | September 30, 1952 | |
| South Sudan | | Accession: January 25, 2013 | July 25, 2013 | |
| Spain | December 8, 1949 | Ratification: August 4, 1952 | February 4, 1953 | |
| Sri Lanka | December 8, 1949 | Ratification: February 23, 1959 | August 23, 1959 | Details |
| Sudan | | Accession: September 23, 1957 | March 23, 1958 | |
| Suriname | | Declaration / Notification of Succession: October 13, 1976 | November 25, 1975 | Details |
| Swaziland | | Accession: June 28, 1973 | December 28, 1973 | |
| Sweden | December 8, 1949 | Ratification: December 28, 1953 | June 28, 1954 | |
| Switzerland | August 12, 1949 | Ratification: March 31, 1950 | October 21, 1950 | |
| Syrian Arab Republic | August 12, 1949 | Ratification: November 2, 1953 | May 2, 1954 | |
| Tajikistan | | Declaration / Notification of Succession: January 13, 1993 | December 21, 1991 | |
| Thailand | | Accession: December 29, 1954 | June 29, 1955 | |
| the former Yugoslav Republic of Macedonia | | Declaration / Notification of Succession: September 1, 1993 | September 8, 1991 | Details |
| Timor-Leste | | Accession: May 8, 2003 | November 8, 2003 | |
| Togo | | Declaration / Notification of Succession: January 6, 1962 | April 27, 1960 | |
| Tonga | | Declaration / Notification of Succession: April 13, 1978 | June 4, 1970 | |
| Trinidad and Tobago | | Accession: September 24, 1963 | March 24, 1964 | |
| Tunisia | | Accession: May 4, 1957 | November 4, 1957 | |
| Turkey | August 12, 1949 | Ratification: February 10, 1954 | August 10, 1954 | |
| Turkmenistan | | Declaration / Notification of Succession: April 10, 1992 | December 26, 1991 | |
| Tuvalu | | Declaration / Notification of Succession: February 19, 1981 | October 1, 1978 | |
| Uganda | | Accession: May 18, 1964 | November 18, 1964 | |
| Ukraine | December 12, 1949 | Ratification: August 3, 1954 | February 3, 1955 | Details |
| United Arab Emirates | | Accession: May 10, 1972 | November 10, 1972 | |
| United Kingdom | December 8, 1949 | Ratification: September 23, 1957 | March 23, 1958 | Details |
| United Republic of Tanzania | | Declaration / Notification of Succession: December 12, 1962 | December 9, 1961 | Details |
| United States of America | August 12, 1949 | Ratification: August 2, 1955 | February 2, 1956 | Details |
| Uruguay | August 12, 1949 | Ratification: March 5, 1969 | September 5, 1969 | Details |
| Uzbekistan | | Accession: October 8, 1993 | April 8, 1994 | |
| Vanuatu | | Accession: October 27, 1982 | April 27, 1983 | |
| Venezuela (Bolivarian Republic of) | February 10, 1950 | Ratification: February 13, 1956 | August 13, 1956 | |
| Viet Nam | | Accession: June 28, 1957 | December 28, 1957 | Details |
| Yemen | | Accession: July 16, 1970 | January 16, 1971 | Details |
| Zambia | | Accession: October 19, 1966 | April 19, 1967 | |
| Zimbabwe | | Accession: March 7, 1983 | September 7, 1983 | |
