| Contracting Parties/Signatories | Signature | Instrument | In Force | Details |
| Albania | | Accession: December 20, 1960 | March 20, 1961 | |
| Andorra | May 14, 1954 | | | Details |
| Angola | | Accession: February 7, 2012 | May 7, 2012 | |
| Argentina | | Accession: March 22, 1989 | June 22, 1989 | |
| Armenia | | Declaration / Notification of Succession: September 5, 1993 | September 23, 1991 | |
| Australia | May 14, 1954 | Ratification: September 19, 1984 | December 19, 1984 | |
| Austria | December 31, 1954 | Ratification: March 25, 1964 | June 25, 1964 | |
| Azerbaijan | | Accession: September 20, 1993 | December 20, 1993 | |
| Bahrain | | Accession: August 26, 2008 | November 26, 2008 | |
| Bangladesh | | Accession: June 23, 2006 | September 23, 2006 | |
| Barbados | | Accession: April 9, 2002 | July 9, 2002 | |
| Belarus | December 30, 1954 | Ratification: May 7, 1957 | August 7, 1957 | Details |
| Belgium | May 14, 1954 | Ratification: September 16, 1960 | December 16, 1960 | |
| Benin | | Accession: April 17, 2012 | July 17, 2012 | |
| Bolivia (Plurinational State of) | | Accession: November 17, 2004 | February 17, 2005 | |
| Bosnia and Herzegovina | | Declaration / Notification of Succession: July 12, 1993 | March 6, 1992 | |
| Botswana | | Accession: January 3, 2002 | April 3, 2002 | |
| Brazil | December 31, 1954 | Ratification: September 12, 1958 | December 12, 1958 | |
| Bulgaria | | Accession: August 7, 1956 | November 7, 1956 | |
| Burkina Faso | | Accession: December 18, 1969 | March 18, 1970 | Details |
| Cambodia | December 17, 1954 | Ratification: April 4, 1962 | July 4, 1962 | Details |
| Cameroon | | Accession: October 12, 1961 | January 12, 1962 | |
| Canada | | Accession: December 11, 1998 | March 11, 1999 | |
| Chad | | Accession: June 17, 2008 | September 17, 2008 | |
| Chile | | Accession: September 11, 2008 | December 11, 2008 | |
| China | May 14, 1954 | Accession: January 5, 2000 | April 5, 2000 | Details |
| Colombia | | Accession: June 18, 1998 | September 18, 1998 | |
| Costa Rica | | Accession: June 3, 1998 | September 3, 1998 | |
| Côte d'Ivoire | | Accession: January 24, 1980 | April 24, 1980 | |
| Croatia | | Declaration / Notification of Succession: July 6, 1992 | October 8, 1991 | |
| Cuba | May 14, 1954 | Ratification: November 26, 1957 | February 26, 1958 | |
| Cyprus | | Accession: September 9, 1964 | December 9, 1964 | |
| Czech Republic | | Declaration / Notification of Succession: March 26, 1993 | January 1, 1993 | |
| Democratic Republic of the Congo | | Accession: April 18, 1961 | July 18, 1961 | Details |
| Denmark | October 18, 1954 | Ratification: March 26, 2003 | June 26, 2003 | |
| Dominican Republic | | Accession: January 5, 1960 | April 5, 1960 | |
| Ecuador | December 30, 1954 | Ratification: October 2, 1956 | January 2, 1957 | |
| Egypt | December 30, 1954 | Ratification: August 17, 1955 | November 17, 1955 | |
| El Salvador | May 14, 1954 | Ratification: July 19, 2001 | October 19, 2001 | |
| Equatorial Guinea | | Accession: November 19, 2003 | February 19, 2004 | |
| Eritrea | | Accession: August 6, 2004 | November 6, 2004 | |
| Estonia | | Accession: April 4, 1995 | July 4, 1995 | |
| Finland | | Accession: September 16, 1994 | December 16, 1994 | |
| France | May 14, 1954 | Ratification: June 7, 1957 | September 7, 1957 | |
| Gabon | | Accession: December 4, 1961 | March 4, 1962 | |
| Georgia | | Declaration / Notification of Succession: November 4, 1992 | April 9, 1991 | |
| Germany | May 14, 1954 | Ratification: August 11, 1967 | November 11, 1967 | Details |
| Ghana | | Accession: July 25, 1960 | October 25, 1960 | |
| Greece | May 14, 1954 | Ratification: February 9, 1981 | May 9, 1981 | |
| Guatemala | | Accession: October 2, 1985 | January 2, 1986 | |
| Guinea | | Accession: September 20, 1960 | December 20, 1960 | |
| Holy See | | Accession: February 24, 1958 | May 24, 1958 | Details |
| Honduras | | Accession: October 25, 2002 | January 25, 2003 | |
| Hungary | May 14, 1954 | Ratification: May 17, 1956 | August 17, 1956 | |
| India | May 14, 1954 | Ratification: June 16, 1958 | September 16, 1958 | |
| Indonesia | December 24, 1954 | Ratification: January 10, 1967 | April 10, 1967 | |
| Iran (Islamic Republic of) | May 14, 1954 | Ratification: June 22, 1959 | September 22, 1959 | |
| Iraq | May 14, 1954 | Ratification: December 21, 1967 | March 21, 1967 | |
| Israel | May 14, 1954 | Ratification: October 3, 1957 | January 3, 1958 | |
| Italy | May 14, 1954 | Ratification: May 9, 1958 | August 9, 1958 | |
| Japan | September 6, 1954 | Ratification: September 10, 2007 | December 10, 2007 | |
| Jordan | December 22, 1954 | Ratification: October 2, 1957 | January 2, 1958 | |
| Kazakhstan | | Declaration / Notification of Succession: March 14, 1997 | December 16, 1991 | |
| Kuwait | | Accession: June 6, 1969 | September 6, 1969 | |
| Kyrgyzstan | | Accession: July 3, 1995 | October 3, 1995 | |
| Latvia | | Accession: December 19, 2003 | March 19, 2004 | |
| Lebanon | May 25, 1954 | Ratification: June 1, 1960 | September 1, 1960 | |
| Libya | May 14, 1954 | Ratification: November 19, 1957 | February 19, 1958 | |
| Liechtenstein | | Accession: April 28, 1960 | July 28, 1960 | |
| Lithuania | | Accession: July 27, 1998 | October 27, 1998 | |
| Luxembourg | May 14, 1954 | Ratification: September 29, 1961 | December 29, 1961 | |
| Madagascar | | Accession: November 3, 1961 | February 3, 1962 | |
| Malaysia | | Accession: December 12, 1960 | March 12, 1961 | Details |
| Mali | | Accession: May 18, 1961 | August 18, 1961 | |
| Mauritius | | Accession: September 22, 2006 | December 22, 2006 | Details |
| Mexico | December 29, 1954 | Ratification: May 7, 1956 | August 7, 1956 | |
| Monaco | May 14, 1954 | Ratification: December 10, 1957 | March 10, 1958 | |
| Mongolia | | Accession: November 4, 1964 | February 4, 1965 | |
| Montenegro | | Declaration / Notification of Succession: April 26, 2007 | June 3, 2006 | |
| Morocco | | Accession: August 30, 1968 | November 30, 1968 | |
| Myanmar | December 31, 1954 | Ratification: February 10, 1956 | May 10, 1956 | |
| Netherlands | May 14, 1954 | Ratification: October 14, 1958 | January 14, 1959 | Details |
| New Zealand | December 20, 1954 | Ratification: July 24, 2008 | October 24, 2008 | Details |
| Nicaragua | May 14, 1954 | Ratification: November 25, 1959 | February 25, 1960 | |
| Niger | | Accession: December 6, 1976 | March 6, 1977 | |
| Nigeria | | Accession: June 5, 1961 | September 5, 1961 | |
| Norway | May 14, 1954 | Ratification: September 19, 1961 | December 19, 1961 | Details |
| Oman | | Accession: October 26, 1977 | January 26, 1978 | |
| Pakistan | | Accession: March 27, 1959 | June 27, 1959 | |
| Palestine | | Accession: March 22, 2012 | June 22, 2012 | |
| Panama | | Accession: July 17, 1962 | October 17, 1962 | |
| Paraguay | | Accession: November 9, 2004 | February 9, 2005 | |
| Peru | | Accession: July 21, 1989 | October 21, 1989 | |
| Poland | May 14, 1954 | Ratification: August 6, 1956 | November 6, 1956 | |
| Portugal | May 14, 1954 | Ratification: August 4, 2000 | November 4, 2000 | |
| Qatar | | Accession: July 31, 1973 | October 31, 1973 | |
| Republic of Moldova | | Accession: December 9, 1999 | March 9, 2000 | |
| Romania | May 14, 1954 | Ratification: March 21, 1958 | June 21, 1958 | |
| Russian Federation | May 14, 1954 | Ratification: January 4, 1957 | April 4, 1957 | Details |
| Rwanda | | Accession: December 28, 2000 | March 28, 2001 | |
| San Marino | May 14, 1954 | Ratification: February 9, 1956 | May 9, 1956 | |
| Saudi Arabia | | Accession: January 20, 1971 | April 20, 1971 | |
| Senegal | | Accession: June 17, 1987 | September 17, 1987 | |
| Serbia | | Declaration / Notification of Succession: September 11, 2001 | April 27, 1992 | |
| Seychelles | | Accession: October 8, 2003 | January 8, 2004 | |
| Slovakia | | Declaration / Notification of Succession: March 31, 1993 | January 1, 1993 | |
| Slovenia | | Declaration / Notification of Succession: November 5, 1992 | October 28, 1992 | |
| South Africa | | Accession: December 18, 2003 | March 18, 2004 | |
| Spain | May 14, 1954 | Ratification: July 7, 1960 | October 7, 1960 | |
| Sri Lanka | | Accession: May 11, 2004 | August 11, 2004 | |
| Sudan | | Accession: July 23, 1970 | October 23, 1970 | Details |
| Sweden | | Accession: January 22, 1985 | April 22, 1985 | |
| Switzerland | | Accession: May 15, 1962 | August 15, 1962 | |
| Syrian Arab Republic | May 14, 1954 | Ratification: March 6, 1958 | June 6, 1958 | |
| Tajikistan | | Declaration / Notification of Succession: August 28, 1992 | September 9, 1991 | |
| Thailand | | Accession: May 2, 1958 | August 2, 1958 | |
| the former Yugoslav Republic of Macedonia | | Declaration / Notification of Succession: April 30, 1997 | November 17, 1991 | |
| Tunisia | | Accession: January 28, 1981 | April 28, 1981 | |
| Turkey | | Accession: December 15, 1965 | March 15, 1966 | |
| Ukraine | May 14, 1954 | Ratification: February 6, 1957 | May 6, 1957 | Details |
| United Republic of Tanzania | | Accession: September 23, 1971 | December 23, 1971 | |
| United States of America | May 14, 1954 | Ratification: March 13, 2009 | June 13, 2009 | Details |
| Uruguay | May 14, 1954 | Ratification: September 24, 1999 | December 24, 1999 | |
| Uzbekistan | | Accession: February 21, 1996 | May 21, 1996 | |
| Venezuela (Bolivarian Republic of) | | Accession: May 9, 2005 | August 9, 2005 | |
| Yemen | | Accession: February 6, 1970 | May 6, 1970 | |
| Zimbabwe | | Accession: June 9, 1998 | September 9, 1998 | |