| Contracting Parties/Signatories | Signature | Instrument | In Force | Details |
| Albania | | Accession: July 29, 1999 | October 2, 2005 | |
| Algeria | | Accession: October 1, 1985 | October 2, 2005 | |
| Antigua and Barbuda | | Accession: January 24, 2006 | January 24, 2006 | |
| Argentina | | Accession: September 23, 1954 | October 2, 2005 | |
| Armenia | | Accession: June 9, 2006 | June 9, 2006 | |
| Australia | April 30, 1952 | Ratification: August 27, 1952 | October 2, 2005 | Details |
| Austria | December 6, 1951 | Ratification: October 22, 1952 | October 2, 2005 | |
| Azerbaijan | | Accession: August 18, 2000 | October 2, 2005 | |
| Bahamas | | Accession: September 19, 1997 | October 2, 2005 | |
| Bahrain | | Accession: March 29, 1971 | October 2, 2005 | |
| Bangladesh | | Accession: September 1, 1978 | October 2, 2005 | |
| Barbados | | Accession: December 6, 1976 | October 2, 2005 | |
| Belarus | | Accession: February 21, 2005 | October 2, 2005 | |
| Belgium | December 6, 1951 | Ratification: July 22, 1952 | October 2, 2005 | |
| Belize | | Accession: May 14, 1987 | October 2, 2005 | |
| Benin | | Accession: October 12, 2010 | October 12, 2010 | |
| Bhutan | | Accession: June 20, 1994 | October 2, 2005 | |
| Bolivia (Plurinational State of) | | Accession: October 27, 1960 | October 2, 2005 | |
| Bosnia and Herzegovina | | Accession: July 30, 2003 | October 2, 2005 | |
| Botswana | | Accession: June 30, 2009 | June 30, 2009 | |
| Brazil | December 6, 1951 | Ratification: September 14, 1961 | October 2, 2005 | |
| Bulgaria | | Accession: November 8, 1991 | October 2, 2005 | |
| Burkina Faso | | Accession: June 8, 1995 | October 2, 2005 | |
| Burundi | | Accession: April 3, 2006 | April 3, 2006 | |
| Cambodia | | Accession: June 10, 1952 | October 2, 2005 | |
| Cameroon | | Accession: April 5, 2006 | April 5, 2006 | |
| Canada | December 6, 1951 | Ratification: July 10, 1953 | October 2, 2005 | |
| Cape Verde | | Accession: March 19, 1980 | October 2, 2005 | |
| Central African Republic | | Accession: October 27, 2004 | October 2, 2005 | |
| Chad | | Accession: March 15, 2004 | October 2, 2005 | |
| Chile | | Ratification: April 3, 1952 | October 2, 2005 | |
| China | | Accession: October 20, 2005 | October 20, 2005 | Details |
| Colombia | April 29, 1952 | Ratification: January 26, 1970 | October 2, 2005 | |
| Comoros | | Accession: January 17, 2007 | January 17, 2007 | |
| Congo | | Accession: December 14, 2004 | October 2, 2005 | |
| Cook Islands | | Accession: December 2, 2004 | October 2, 2005 | |
| Costa Rica | April 28, 1952 | Ratification: July 23, 1973 | October 2, 2005 | |
| Côte d'Ivoire | | Accession: December 17, 2004 | October 2, 2005 | |
| Croatia | | Accession: May 14, 1999 | October 2, 2005 | |
| Cuba | December 6, 1951 | Ratification: April 14, 1976 | October 2, 2005 | Details |
| Cyprus | | Accession: February 11, 1999 | October 2, 2005 | |
| Czech Republic | | Accession: August 5, 1983 | October 2, 2005 | Details |
| Democratic People's Republic of Korea | | Accession: August 25, 2003 | October 2, 2005 | |
| Denmark | December 6, 1951 | Ratification: February 13, 1953 | October 2, 2005 | Details |
| Djibouti | | Accession: March 25, 2008 | March 25, 2008 | |
| Dominica | | Accession: March 30, 2006 | March 30, 2006 | |
| Dominican Republic | | Accession: June 20, 1952 | October 2, 2005 | |
| Ecuador | March 12, 1952 | Ratification: May 9, 1956 | October 2, 2005 | |
| Egypt | December 6, 1951 | Ratification: July 22, 1953 | October 2, 2005 | |
| El Salvador | December 6, 1951 | Ratification: February 12, 1953 | October 2, 2005 | |
| Equatorial Guinea | | Accession: August 27, 1991 | October 2, 2005 | |
| Eritrea | | Accession: April 6, 2001 | October 2, 2005 | |
| Estonia | | Accession: December 7, 2000 | October 2, 2005 | |
| Ethiopia | | Accession: June 20, 1977 | October 2, 2005 | |
| European Union (EU) | | Accession: October 6, 2005 | October 6, 2005 | |
| Fiji | | Accession: August 10, 2005 | October 2, 2005 | |
| Finland | | Accession: June 22, 1960 | October 2, 2005 | |
| France | December 6, 1951 | Ratification: August 20, 1957 | October 2, 2005 | |
| Gabon | | Accession: April 23, 2008 | April 23, 2008 | |
| Georgia | | Accession: March 8, 2007 | March 8, 2007 | |
| Germany | April 30, 1952 | Ratification: May 3, 1957 | October 2, 2005 | Details |
| Ghana | | Accession: February 22, 1991 | October 2, 2005 | |
| Greece | | Accession: December 9, 1954 | October 2, 2005 | |
| Grenada | | Accession: November 27, 1985 | October 2, 2005 | |
| Guatemala | April 23, 1952 | Ratification: May 25, 1955 | October 2, 2005 | |
| Guinea | | Accession: May 22, 1991 | October 2, 2005 | |
| Guinea-Bissau | | Accession: October 24, 2007 | October 24, 2007 | |
| Guyana | | Accession: August 31, 1970 | October 2, 2005 | |
| Haiti | | Accession: November 6, 1970 | October 2, 2005 | |
| Honduras | | Accession: July 30, 2003 | October 2, 2005 | |
| Hungary | | Accession: May 17, 1960 | October 2, 2005 | |
| Iceland | | Accession: April 11, 2005 | October 2, 2005 | |
| India | April 30, 1952 | Ratification: June 9, 1952 | October 2, 2005 | |
| Indonesia | December 6, 1951 | Ratification: June 21, 1977 | October 2, 2005 | |
| Iran (Islamic Republic of) | | Accession: September 18, 1972 | October 2, 2005 | |
| Iraq | | Accession: July 1, 1954 | October 2, 2005 | |
| Ireland | December 6, 1951 | Ratification: March 31, 1955 | October 2, 2005 | |
| Israel | December 6, 1951 | Ratification: September 3, 1956 | October 2, 2005 | |
| Italy | February 2, 1952 | Ratification: August 3, 1955 | October 2, 2005 | |
| Jamaica | | Accession: November 24, 1969 | October 2, 2005 | |
| Japan | December 6, 1951 | Ratification: August 11, 1952 | October 2, 2005 | |
| Jordan | | Accession: April 24, 1970 | October 2, 2005 | |
| Kazakhstan | | Accession: September 13, 2010 | September 13, 2010 | |
| Kenya | | Accession: May 7, 1974 | October 2, 2005 | |
| Kuwait | | Accession: September 12, 2007 | September 12, 2007 | |
| Kyrgyzstan | | Accession: December 11, 2003 | October 2, 2005 | |
| Lao People's Democratic Republic | | Accession: February 28, 1955 | October 2, 2005 | |
| Latvia | | Accession: August 18, 2003 | October 2, 2005 | |
| Lebanon | | Accession: September 18, 1970 | October 2, 2005 | |
| Liberia | | Accession: July 2, 1986 | October 2, 2005 | |
| Libya | | Accession: July 9, 1970 | October 2, 2005 | |
| Lithuania | | Accession: January 12, 2000 | October 2, 2005 | |
| Luxembourg | January 16, 1952 | Ratification: January 13, 1955 | October 2, 2005 | |
| Madagascar | | Accession: May 24, 2006 | May 24, 2006 | |
| Malawi | | Accession: May 21, 1974 | October 2, 2005 | |
| Malaysia | | Accession: May 17, 1991 | October 2, 2005 | |
| Maldives | | Accession: October 3, 2006 | October 3, 2006 | |
| Mali | | Accession: August 31, 1987 | October 2, 2005 | |
| Malta | | Accession: May 13, 1975 | October 2, 2005 | |
| Mauritania | | Accession: April 29, 2002 | October 2, 2005 | |
| Mauritius | | Accession: June 11, 1971 | October 2, 2005 | |
| Mexico | | Accession: May 26, 1976 | October 2, 2005 | |
| Micronesia (Federated States of) | | Accession: July 6, 2007 | July 6, 2007 | |
| Mongolia | | Accession: May 26, 2009 | May 26, 2009 | |
| Montenegro | | Accession: July 27, 2009 | July 27, 2009 | |
| Morocco | | Accession: October 12, 1972 | October 2, 2005 | |
| Mozambique | | Accession: May 15, 2008 | May 15, 2008 | |
| Myanmar | | Accession: May 26, 2006 | May 26, 2006 | |
| Namibia | | Accession: February 23, 2007 | February 23, 2007 | |
| Nepal | | Accession: May 8, 2006 | May 8, 2006 | |
| Netherlands | December 6, 1951 | Ratification: October 29, 1954 | October 2, 2005 | |
| New Zealand | December 6, 1951 | Ratification: September 16, 1952 | October 2, 2005 | |
| Nicaragua | | Accession: August 2, 1956 | October 2, 2005 | |
| Niger | | Accession: June 4, 1985 | October 2, 2005 | |
| Nigeria | | | October 2, 2005 | |
| Niue | | Accession: October 27, 2005 | October 27, 2005 | |
| Norway | | Accession: April 23, 1956 | October 2, 2005 | |
| Oman | | Accession: January 23, 1989 | October 2, 2005 | |
| Pakistan | | Accession: November 10, 1954 | October 2, 2005 | |
| Palau | | Accession: June 23, 2006 | June 23, 2006 | |
| Panama | | Accession: February 14, 1968 | October 2, 2005 | |
| Papua New Guinea | | Accession: June 1, 1976 | October 2, 2005 | |
| Paraguay | | Accession: April 5, 1968 | October 2, 2005 | |
| Peru | | Accession: July 1, 1975 | October 2, 2005 | |
| Philippines | December 6, 1951 | Ratification: December 3, 1953 | October 2, 2005 | |
| Poland | | Accession: May 29, 1996 | October 2, 2005 | |
| Portugal | December 6, 1951 | | October 2, 2005 | |
| Qatar | | Accession: June 8, 2006 | June 8, 2006 | |
| Republic of Korea | | Accession: December 8, 1953 | October 2, 2005 | |
| Republic of Moldova | | Accession: January 25, 2001 | October 2, 2005 | |
| Romania | | Accession: November 17, 1971 | October 2, 2005 | Details |
| Russian Federation | | Accession: April 24, 1956 | October 2, 2005 | |
| Rwanda | | Accession: August 26, 2008 | August 26, 2008 | |
| Saint Kitts and Nevis | | Accession: April 17, 1990 | October 2, 2005 | |
| Saint Lucia | | Accession: October 23, 2002 | October 2, 2005 | |
| Saint Vincent and the Grenadines | | Accession: November 15, 2001 | October 2, 2005 | |
| Samoa | | Accession: March 2, 2005 | October 2, 2005 | |
| Sao Tome and Principe | | Accession: April 7, 2006 | April 7, 2006 | |
| Saudi Arabia | | Accession: August 7, 2000 | October 2, 2005 | |
| Senegal | | Accession: March 3, 1975 | October 2, 2005 | |
| Serbia | | Declaration / Notification of Succession: April 27, 1992 | October 2, 2005 | Details |
| Seychelles | | Accession: October 31, 1996 | October 2, 2005 | |
| Sierra Leone | | Accession: June 23, 1981 | October 2, 2005 | |
| Singapore | | Accession: August 18, 2010 | August 18, 2010 | |
| Slovakia | | Accession: March 24, 2006 | March 24, 2006 | |
| Slovenia | | Accession: May 27, 1998 | October 2, 2005 | |
| Solomon Islands | | Accession: October 18, 1978 | October 2, 2005 | |
| South Africa | December 6, 1951 | Ratification: September 21, 1956 | October 2, 2005 | |
| Spain | December 10, 1951 | Ratification: February 18, 1952 | October 2, 2005 | |
| Sri Lanka | December 7, 1951 | Ratification: February 12, 1952 | October 2, 2005 | |
| Sudan | | Accession: July 16, 1971 | October 2, 2005 | |
| Suriname | October 29, 1954 | | October 2, 2005 | Details |
| Swaziland | | Accession: July 12, 2005 | October 2, 2005 | |
| Sweden | December 11, 1951 | Ratification: May 30, 1952 | October 2, 2005 | |
| Switzerland | December 6, 1951 | Ratification: September 26, 1996 | October 2, 2005 | |
| Syrian Arab Republic | | Accession: November 5, 2003 | October 2, 2005 | |
| Tajikistan | | Accession: October 4, 2010 | October 4, 2010 | |
| Thailand | December 6, 1951 | Ratification: August 16, 1978 | October 2, 2005 | |
| the former Yugoslav Republic of Macedonia | | Accession: August 9, 2004 | October 2, 2005 | |
| Togo | | Accession: April 2, 1986 | October 2, 2005 | |
| Tonga | | Accession: November 23, 2005 | November 23, 2005 | |
| Trinidad and Tobago | | Accession: June 30, 1970 | October 2, 2005 | |
| Tunisia | | Accession: July 22, 1971 | October 2, 2005 | |
| Turkey | | Accession: July 29, 1988 | October 2, 2005 | |
| Tuvalu | | Accession: December 15, 2006 | December 15, 2006 | |
| Uganda | | Accession: August 29, 2007 | August 29, 2007 | |
| Ukraine | | Accession: May 31, 2006 | May 31, 2006 | |
| United Arab Emirates | | Accession: April 2, 2001 | October 2, 2005 | |
| United Kingdom | December 6, 1951 | Ratification: September 7, 1953 | October 2, 2005 | Details |
| United Republic of Tanzania | | Accession: February 21, 2005 | October 2, 2005 | |
| United States of America | December 6, 1951 | Ratification: August 18, 1972 | October 2, 2005 | Details |
| Uruguay | April 30, 1952 | Ratification: July 15, 1970 | October 2, 2005 | |
| Vanuatu | | Accession: August 2, 2007 | August 2, 2007 | |
| Venezuela (Bolivarian Republic of) | | Accession: May 12, 1966 | October 2, 2005 | |
| Viet Nam | | Accession: February 22, 2005 | October 2, 2005 | |
| Yemen | | Accession: December 20, 1990 | October 2, 2005 | Details |
| Zambia | | Accession: June 24, 1986 | October 2, 2005 | |
| Zimbabwe | | Accession: November 30, 2012 | November 30, 2012 | |