| Country | Action | Action Date | Effective Date |
|---|
| AFGHANISTAN | Accession | 10/08/2004 | 10/08/2004 |
| ALBANIA | Accession | 31/08/1992 | 31/08/1992 |
| ALGERIA | Accession | 19/12/1966 | 19/12/1966 |
| ANDORRA | Accession | 03/09/1998 | 03/09/1998 |
| ARGENTINA | Accession | 01/07/1968 | 01/07/1968 |
| ARGENTINA | Communication | 21/03/2017 | |
| ARMENIA | Accession | 30/06/1992 | 30/06/1992 |
| AUSTRALIA | Accession | 05/01/1961 | 05/01/1961 |
| AUSTRIA | Accession | 21/01/1953 | 21/01/1953 |
| AUSTRIA | Declaration | 05/04/1960 | |
| AZERBAIJAN | Accession | 17/06/1992 | 17/06/1992 |
| Bahamas | Extension | 16/01/1964 | |
| BAHAMAS | Succession | 16/08/1974 | 16/08/1974 |
| BAHRAIN | Accession | 18/04/2001 | 18/04/2001 |
| BANGLADESH | Accession | 01/07/1978 | 01/07/1978 |
| BARBADOS | Accession | 07/01/1999 | 07/01/1999 |
| Basutoland | Extension | 16/01/1964 | |
| BELARUS | Accession | 16/12/1993 | 16/12/1993 |
| BELGIUM | Signature | 15/12/1950 | |
| BELGIUM | Ratification | 11/12/1952 | 11/12/1952 |
| BELIZE | Accession | 22/04/2008 | 22/04/2008 |
| BENIN | Accession | 09/11/1998 | 09/11/1998 |
| Bermuda | Application | 01/07/1990 | 01/07/1990 |
| BHUTAN | Accession | 12/02/2002 | 12/02/2002 |
| BOLIVIA | Accession | 14/08/1997 | 14/08/1997 |
| BOSNIA AND HERZEGOVINA | Accession | 04/07/2008 | 04/07/2008 |
| BOTSWANA | Accession | 25/08/1978 | 25/08/1978 |
| BRAZIL | Accession | 19/01/1981 | 19/01/1981 |
| British Guiana | Extension | 16/01/1964 | |
| BRUNEI DARUSSALAM | Accession | 01/07/1996 | 01/07/1996 |
| BULGARIA | Accession | 01/08/1973 | 01/08/1973 |
| BURKINA FASO | Accession | 16/09/1966 | 16/09/1966 |
| BURUNDI | Accession | 20/10/1964 | 20/10/1964 |
| CAMBODIA | Accession | 03/04/2001 | 03/04/2001 |
| CAMEROON | Accession | 09/04/1965 | 09/04/1965 |
| CANADA | Accession | 12/10/1971 | 12/10/1971 |
| CAPE VERDE | Accession | 01/07/1992 | 01/07/1992 |
| Cayman Islands | Extension | 16/01/1964 | |
| CENTRAL AFRICAN REPUBLIC | Accession | 08/04/1965 | 08/04/1965 |
| CENTRAL AFRICAN REPUBLIC | Denunciation | 31/03/1967 | 14/07/1967 |
| CENTRAL AFRICAN REPUBLIC | Re-Accession | 28/07/1985 | 28/07/1986 |
| CEYLON | Accession | 29/05/1967 | |
| CHAD | Accession | 16/02/2005 | 16/02/2005 |
| CHILE | Accession | 01/07/1966 | 01/07/1966 |
| CHILE | Accession | 20/12/1994 | 20/12/1994 |
| CHILE | Declaration | 16/08/1995 | |
| CHINA | Accession | 18/07/1983 | 18/07/1983 |
| CHINA | Declaration | 06/05/1993 | |
| CHINA | Declaration | 06/10/1993 | |
| COLOMBIA | Accession | 01/07/1993 | 01/07/1993 |
| COMOROS | Accession | 01/07/1993 | 01/07/1993 |
| CONGO, PEOPLES REPUBLIC OF | Accession | 02/09/1975 | 02/09/1975 |
| COSTA RICA | Accession | 29/08/2001 | 29/08/2001 |
| CROATIA | Accession | 01/07/1993 | 01/07/1993 |
| CUBA | Accession | 11/07/1988 | 11/07/1988 |
| CYPRUS | Accession | 31/08/1967 | 31/08/1967 |
| CZECH REPUBLIC | Succession | 01/01/1993 | 01/01/1993 |
| CZECHOSLOVAKIA | Accession | 23/09/1965 | 23/09/1965 |
| DENMARK | Signature | 30/03/1951 | |
| DENMARK | Ratification | 19/10/1951 | 04/11/1952 |
| DJIBOUTI | Accession | 19/03/2008 | 19/03/2008 |
| DOMINICAN REPUBLIC | Accession | 28/07/2004 | 28/07/2004 |
| ECUADOR | Accession | 16/12/1997 | 16/12/1997 |
| EGYPT | Accession | 26/10/1956 | |
| EL SALVADOR | Accession | 07/07/2005 | 07/07/2005 |
| ERITREA | Accession | 08/08/1995 | 08/08/1995 |
| ESTONIA | Accession | 18/06/1992 | 18/06/1992 |
| ETHIOPIA | Accession | 06/08/1973 | 06/08/1973 |
| Falkland Islands | Extension | 16/01/1964 | |
| Fiji | Extension | 16/01/1964 | |
| FIJI | Accession | 01/07/1997 | 01/07/1997 |
| FINLAND | Accession | 27/01/1961 | 27/01/1961 |
| FRANCE | Signature | 22/12/1950 | |
| FRANCE | Ratification | 06/10/1952 | 04/11/1952 |
| GABON | Accession | 18/02/1965 | 18/02/1965 |
| GAMBIA THE | Succession | 14/10/1987 | 14/10/1987 |
| GEORGIA | Accession | 26/10/1993 | 26/10/1993 |
| GEORGIA | Communication | 26/04/2017 | |
| GERMAN DEMOCRATIC REPUBLIC | Accession | 27/03/1990 | 27/03/1990 |
| GERMANY FEDERAL REPUBLIC | Signature | 30/03/1951 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 04/11/1952 | 04/11/1952 |
| GERMANY FEDERAL REPUBLIC | Declaration | 05/01/1954 | |
| GHANA | Accession | 01/08/1968 | 01/08/1968 |
| GREECE | Signature | 09/01/1951 | |
| GREECE | Ratification | 10/12/1951 | 04/11/1952 |
| GUATEMALA | Accession | 22/02/1985 | 22/02/1985 |
| GUINEA | Accession | 30/10/1991 | 30/10/1991 |
| GUINEA BISSAU | Accession | 19/08/2010 | 19/08/2010 |
| GUYANA | Accession | 29/07/1976 | 29/07/1976 |
| HAITI | Accession | 31/01/1958 | 31/01/1958 |
| HONDURAS | Accession | 08/12/2005 | 08/12/2005 |
| Hong Kong | Extension | 01/07/1987 | 01/07/1987 |
| HUNGARY | Accession | 16/09/1968 | 16/09/1968 |
| ICELAND | Signature | 20/12/1950 | |
| ICELAND | Ratification | 15/02/1971 | 15/02/1971 |
| INDIA | Accession | 15/02/1971 | 15/02/1971 |
| INDONESIA | Accession | 30/04/1957 | 30/04/1957 |
| IRAN | Accession | 16/10/1959 | 16/10/1959 |
| IRAQ | Accession | 06/06/1990 | 06/06/1990 |
| IRELAND, REPUBLIC OF | Accession | 23/09/1952 | 04/11/1952 |
| ISRAEL | Accession | 23/05/1958 | 23/05/1958 |
| ITALY | Signature | 10/01/1951 | |
| ITALY | Ratification | 20/11/1952 | 20/11/1952 |
| IVORY COAST | Accession | 02/09/1963 | 02/09/1963 |
| JAMAICA | Accession | 29/03/1963 | 29/03/1963 |
| JAPAN | Accession | 15/06/1964 | 15/06/1964 |
| JORDAN | Accession | 01/01/1964 | 01/01/1964 |
| KAZAKHSTAN | Accession | 30/06/1992 | 30/06/1992 |
| Kenya | Extension | 16/01/1964 | |
| KENYA | Succession | 24/05/1965 | 24/05/1965 |
| KOREA REPUBLIC OF | Accession | 02/07/1968 | 02/07/1968 |
| KOSOVO | Accession | 25/01/2017 | 25/01/2017 |
| KUWAIT | Accession | 04/10/1993 | 04/10/1993 |
| KYRGYZSTAN | Accession | 10/02/2000 | 10/02/2000 |
| Land Berlin | Extension | 05/01/1954 | 05/01/1954 |
| LAO PEOPLE'S DEMOCRATIC REPUBLIC | Accession | 16/01/2007 | 16/01/2007 |
| LATVIA | Accession | 22/06/1992 | 22/06/1992 |
| LEBANON | Accession | 20/05/1960 | 20/05/1960 |
| LEBANON | Communication | 13/11/2017 | |
| LESOTHO | Accession | 02/08/1978 | 02/08/1978 |
| LIBERIA | Accession | 07/01/1975 | 07/01/1975 |
| LIBYA | Accession | 11/01/1983 | 11/01/1983 |
| LITHUANIA | Accession | 18/06/1992 | 18/06/1992 |
| LUXEMBOURG | Signature | 08/01/1951 | |
| LUXEMBOURG | Ratification | 23/01/1953 | 26/01/1953 |
| Macao | Extension | 07/07/1993 | 07/07/1993 |
| MACEDONIA THE FYR OF | Accession | 01/07/1994 | 01/07/1994 |
| MADAGASCAR | Accession | 18/02/1964 | 18/02/1964 |
| MALAGASY REPUBLIC | Accession | 18/02/1964 | |
| MALAWI | Accession | 06/06/1966 | 06/06/1966 |
| MALAYSIA | Accession | 30/06/1964 | 30/06/1964 |
| MALDIVES | Accession | 08/09/1995 | 08/09/1995 |
| MALI | Accession | 07/08/1987 | 07/08/1987 |
| Malta | Extension | 16/01/1964 | |
| MALTA | Accession | 06/07/1968 | 06/07/1968 |
| MAURITANIA | Accession | 02/10/1979 | 02/10/1979 |
| Mauritius | Extension | 16/01/1964 | |
| MAURITIUS | Succession | 29/03/1973 | 29/03/1973 |
| MAURITIUS | Communication | 05/07/2017 | |
| MEXICO | Accession | 08/02/1988 | 08/02/1988 |
| MOLDOVA REPUBLIC OF | Accession | 28/10/1994 | 28/10/1994 |
| MONGOLIA | Accession | 17/09/1991 | 17/09/1991 |
| MONTENEGRO | Accession | 24/10/2006 | 24/10/2006 |
| Montserrat | Extension | 16/01/1964 | |
| Morocco | Extension | 13/07/1952 | |
| MOROCCO | Succession | 01/07/1968 | 01/07/1968 |
| MOZAMBIQUE | Accession | 01/07/1987 | 01/07/1987 |
| MYANMAR | Accession | 25/03/1991 | 25/03/1991 |
| NAMIBIA | Accession | 30/06/1992 | 30/06/1992 |
| NEPAL | Accession | 22/07/1985 | 22/07/1985 |
| Netherlands Antilles | Extension | 01/07/2001 | 01/07/2001 |
| NETHERLANDS THE | Signature | 29/12/1950 | |
| NETHERLANDS THE | Ratification | 23/01/1953 | 23/01/1953 |
| Netherlands West Indies | Extension | 16/01/1964 | |
| NEW ZEALAND | Accession | 16/05/1963 | 16/05/1963 |
| NICARAGUA | Accession | 24/09/1998 | 24/09/1998 |
| NIGER | Accession | 01/07/1981 | 01/07/1981 |
| NIGERIA | Accession | 21/08/1963 | 21/08/1963 |
| NORWAY | Signature | 28/03/1951 | |
| NORWAY | Ratification | 06/08/1951 | 04/11/1952 |
| OMAN | Accession | 11/09/2000 | 11/09/2000 |
| PAKISTAN | Accession | 16/11/1955 | 16/11/1955 |
| PALESTINE (INCL. PLO) | Accession | 24/03/2015 | 24/03/2015 |
| PANAMA | Accession | 08/03/1996 | 08/03/1996 |
| PAPUA NEW GUINEA | Accession | 18/03/2002 | 18/03/2002 |
| PARAGUAY | Accession | 03/10/1969 | 03/10/1969 |
| PERU | Accession | 27/01/1970 | 27/01/1970 |
| PHILIPPINES | Accession | 01/10/1980 | 01/10/1980 |
| POLAND | Accession | 17/07/1974 | 17/07/1974 |
| PORTUGAL | Signature | 29/03/1951 | |
| PORTUGAL | Ratification | 26/01/1953 | 26/01/1953 |
| PORTUGAL | Declaration | 06/05/1993 | |
| PORTUGAL | Declaration | 06/10/1993 | |
| QATAR | Accession | 04/05/1992 | 04/05/1992 |
| ROMANIA | Accession | 15/01/1969 | 15/01/1969 |
| ROMANIA | Objection | 15/01/1969 | |
| ROMANIA | Communication | 07/04/2017 | |
| RUSSIA | Accession | 08/07/1991 | 08/07/1991 |
| RWANDA | Accession | 03/03/1964 | 03/03/1964 |
| SAINT LUCIA | Accession | 12/05/2005 | 12/05/2005 |
| SAMOA | Accession | 01/10/2001 | 01/10/2001 |
| SAO TOME AND PRINCIPE | Accession | 23/09/2009 | 23/09/2009 |
| SAUDI ARABIA | Accession | 08/05/1973 | 08/05/1973 |
| SENEGAL | Accession | 10/03/1976 | 10/03/1976 |
| SERBIA | Accession | 27/03/2001 | |
| SERBIA | Communication | 07/03/2017 | |
| Seychelles | Extension | 16/01/1964 | |
| SEYCHELLES | Accession | 25/07/2000 | 25/07/2000 |
| SIERRA LEONE | Accession | 06/11/1975 | 06/11/1975 |
| SINGAPORE | Accession | 09/07/1975 | 09/07/1975 |
| SLOVAK REPUBLIC | Succession | 01/01/1993 | 01/01/1993 |
| SLOVENIA | Accession | 07/09/1992 | 07/09/1992 |
| SOMALIA | Accession | 04/10/2012 | 04/10/2012 |
| SOUTH AFRICA | Accession | 24/03/1964 | |
| SOUTH SUDAN | Accession | 18/07/2012 | 18/07/2012 |
| SPAIN | Accession | 13/07/1952 | 04/11/1952 |
| SPAIN | Declaration | 13/07/1952 | |
| SPAIN | Communication | 13/03/2017 | |
| Spain, Territories In Africa | Extension | 13/07/1952 | 04/11/1952 |
| SRI LANKA | Accession | 29/05/1967 | 29/05/1967 |
| St Kitts Nevis Anguilla | Extension | 16/01/1964 | |
| SUDAN | Accession | 08/06/1960 | 08/06/1960 |
| Swaziland | Extension | 16/01/1964 | |
| SWAZILAND | Accession | 15/05/1981 | 15/05/1981 |
| SWEDEN | Signature | 03/03/1951 | |
| SWEDEN | Ratification | 17/10/1952 | 04/11/1952 |
| SWITZERLAND | Accession | 19/12/1952 | 19/12/1952 |
| SYRIA | Accession | 03/11/1959 | 03/11/1959 |
| TAJIKISTAN | Accession | 01/07/1997 | 01/07/1997 |
| TANZANIA | Accession | 17/11/1964 | 17/11/1964 |
| THAILAND | Accession | 04/02/1972 | 04/02/1972 |
| The Gambia | Extension | 16/01/1964 | |
| TIMOR-LESTE | Accession | 19/09/2003 | 19/09/2003 |
| TOGO | Accession | 12/02/1990 | 12/02/1990 |
| TOGO | Accession | 01/07/2005 | |
| Tonga | Extension | 16/01/1964 | |
| TONGA | Accession | 01/07/2005 | 01/07/2005 |
| TRINIDAD AND TOBAGO | Accession | 15/10/1973 | 15/10/1973 |
| Tunisia | Extension | 13/07/1952 | |
| TUNISIA | Accession | 20/07/1966 | 20/07/1966 |
| TURKEY | Accession | 06/06/1951 | 04/11/1952 |
| TURKMENISTAN | Accession | 17/05/1993 | 17/05/1993 |
| UGANDA | Accession | 03/11/1964 | 03/11/1964 |
| UKRAINE | Accession | 26/06/1992 | 26/06/1992 |
| UNITED ARAB EMIRATES | Accession | 07/02/1979 | 07/02/1979 |
| UNITED ARAB REPUBLIC | Accession | 26/10/1956 | 26/10/1956 |
| UNITED ARAB REPUBLIC | Declaration | 03/11/1959 | |
| UNITED KINGDOM | Signature | 21/02/1951 | |
| UNITED KINGDOM | Ratification | 12/09/1952 | 04/11/1952 |
| UNITED KINGDOM | Notification | 15/12/1953 | |
| UNITED KINGDOM | Declaration | 18/08/1958 | |
| UNITED KINGDOM | Declaration | 14/01/1964 | |
| UNITED STATES OF AMERICA | Accession | 05/11/1970 | 05/11/1970 |
| UPPER VOLTA | Accession | 16/09/1966 | |
| URUGUAY | Accession | 16/09/1977 | 16/09/1977 |
| UZBEKISTAN | Accession | 28/07/1992 | 28/07/1992 |
| VANUATU | Accession | 17/11/2009 | 17/11/2009 |
| VENEZUELA | Accession | 01/07/1996 | 01/07/1996 |
| VIETNAM, REPUBLIC OF | Accession | 01/07/1993 | 01/07/1993 |
| Western Pacific High Commsn Territories | Extension | 16/01/1964 | |
| YEMEN, REPUBLIC OF | Accession | 01/07/1993 | 01/07/1993 |
| YUGOSLAVIA | Accession | 26/04/1960 | 26/04/1960 |
| YUGOSLAVIA, FEDERAL REPUBLIC OF | Accession | 27/03/2001 | 27/03/2001 |
| ZAIRE | Accession | 26/07/1972 | 26/07/1972 |
| ZAMBIA | Accession | 27/09/1978 | 27/09/1978 |
| ZIMBABWE | Accession | 19/03/1981 | 19/03/1981 |