| Country | Action | Action Date | Effective Date |
|---|
| ALBANIA | Accession | 20/12/1960 | |
| ARMENIA | Succession | 05/09/1993 | |
| AUSTRIA | Signature | 14/05/1954 | |
| AUSTRIA | Ratification | 25/03/1964 | |
| AZERBAIJAN | Accession | 20/09/1993 | 20/12/1993 |
| BELGIUM | Signature | 14/05/1954 | |
| BELGIUM | Ratification | 16/09/1960 | |
| BENIN | Accession | 17/04/2012 | 17/07/2012 |
| BOSNIA AND HERZEGOVINA | Succession | 12/07/1993 | |
| BRAZIL | Signature | 14/05/1954 | |
| BRAZIL | Ratification | 12/09/1958 | |
| BULGARIA | Accession | 09/10/1958 | |
| BULGARIA | Objection | 27/05/1969 | |
| BURKINA FASO | Accession | 04/02/1987 | 04/05/1987 |
| BURMA | Signature | 14/05/1954 | 01/01/1900 |
| BURMA | Ratification | 10/02/1956 | |
| BYELORUSSIA S S R | Signature | 14/05/1954 | |
| BYELORUSSIA S S R | Ratification | 07/05/1957 | |
| CAMBODIA | Signature | 14/05/1954 | |
| CAMBODIA | Ratification | 04/04/1962 | |
| CAMEROON | Accession | 12/10/1961 | |
| CHINA | Signature | 14/05/1954 | |
| CHINA | Accession | 05/01/2000 | 05/04/2000 |
| CHINA | Declaration | 05/01/2000 | |
| COLOMBIA | Accession | 18/06/1998 | 18/09/1998 |
| CONGO | Accession | 18/04/1961 | |
| COSTA RICA | Accession | 03/06/1998 | 03/09/1998 |
| CUBA | Signature | 14/05/1954 | |
| CUBA | Ratification | 26/11/1957 | |
| CYPRUS | Accession | 09/09/1964 | |
| CZECH REPUBLIC | Succession | 26/03/1993 | 01/01/1993 |
| CZECHOSLOVAKIA | Signature | 14/05/1954 | |
| CZECHOSLOVAKIA | Ratification | 06/12/1957 | |
| DENMARK | Signature | 14/05/1954 | |
| DOMINICAN REPUBLIC | Accession | 21/03/2002 | 21/06/2002 |
| ECUADOR | Signature | 14/05/1954 | |
| ECUADOR | Ratification | 08/02/1961 | |
| EGYPT | Signature | 14/05/1954 | |
| EGYPT | Ratification | 17/08/1955 | |
| EL SALVADOR | Accession | 27/03/2002 | 27/06/2002 |
| ESTONIA | Accession | 17/01/2005 | 17/04/2005 |
| FINLAND | Accession | 16/09/1994 | 16/12/1994 |
| FRANCE | Signature | 14/05/1954 | |
| FRANCE | Ratification | 07/06/1957 | |
| GABON | Accession | 04/12/1961 | |
| GEORGIA | Succession | 04/11/1992 | |
| GERMAN DEMOCRATIC REPUBLIC | Objection | 15/12/1973 | |
| GERMAN DEMOCRATIC REPUBLIC | Non-acceptance | 15/12/1973 | |
| GERMAN DEMOCRATIC REPUBLIC | Accession | 16/01/1974 | 16/04/1974 |
| GERMANY FEDERAL REPUBLIC | Signature | 14/05/1954 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 11/08/1967 | |
| GHANA | Accession | 25/07/1960 | |
| GREECE | Signature | 14/05/1954 | |
| GREECE | Ratification | 09/02/1981 | 09/05/1981 |
| GUATEMALA | Accession | 19/05/1994 | 19/08/1994 |
| GUINEA | Accession | 11/12/1961 | |
| HUNGARY | Accession | 16/08/1956 | |
| INDIA | Signature | 14/05/1954 | |
| INDIA | Ratification | 16/06/1958 | |
| INDONESIA | Signature | 14/05/1954 | |
| INDONESIA | Ratification | 26/07/1967 | |
| IRAN | Signature | 14/05/1954 | |
| IRAN | Ratification | 22/06/1959 | |
| IRAQ | Signature | 14/05/1954 | |
| IRAQ | Ratification | 21/12/1967 | |
| ISRAEL | Accession | 01/04/1958 | |
| ITALY | Signature | 14/05/1954 | |
| ITALY | Ratification | 09/05/1958 | |
| JAPAN | Signature | 14/05/1954 | |
| JORDAN | Signature | 14/05/1954 | |
| JORDAN | Ratification | 02/10/1957 | |
| KAZAKHSTAN | Succession | 14/03/1997 | |
| KUWAIT | Accession | 11/02/1970 | 11/05/1970 |
| Land Berlin | Extension | 11/08/1967 | |
| LEBANON | Signature | 14/05/1954 | |
| LEBANON | Ratification | 01/06/1960 | |
| LIBYA | Signature | 14/05/1954 | |
| LIBYA | Ratification | 19/11/1957 | |
| LIECHTENSTEIN | Accession | 28/04/1960 | |
| LITHUANIA | Accession | 27/07/1998 | 27/10/1998 |
| LUXEMBOURG | Signature | 14/05/1954 | |
| LUXEMBOURG | Ratification | 29/09/1961 | |
| MALAGASY REPUBLIC | Accession | 03/11/1961 | |
| MALAYSIA | Accession | 12/12/1960 | |
| MALI | Accession | 18/05/1961 | |
| MEXICO | Signature | 14/05/1954 | |
| MEXICO | Ratification | 07/05/1956 | |
| MOLDOVA REPUBLIC OF | Accession | 09/12/1999 | 09/03/2000 |
| MONACO | Signature | 14/05/1954 | |
| MONACO | Ratification | 10/12/1957 | |
| MOROCCO | Accession | 30/08/1968 | |
| NETHERLANDS THE | Signature | 14/05/1954 | |
| NETHERLANDS THE | Ratification | 14/10/1958 | |
| NICARAGUA | Signature | 14/05/1954 | |
| NICARAGUA | Ratification | 25/11/1959 | |
| NIGER | Accession | 06/12/1976 | 06/03/1977 |
| NIGERIA | Accession | 05/06/1961 | |
| NORWAY | Signature | 14/05/1954 | |
| NORWAY | Ratification | 19/09/1961 | |
| NORWAY | Reservation | 19/09/1961 | |
| NORWAY | Withdrawal Res. | 03/10/1979 | |
| PAKISTAN | Accession | 27/03/1959 | |
| PERU | Accession | 21/07/1989 | 21/10/1989 |
| PHILIPPINES | Signature | 14/05/1954 | |
| POLAND | Signature | 14/05/1954 | |
| POLAND | Ratification | 06/08/1956 | |
| PORTUGAL | Accession | 18/02/2005 | 18/05/2005 |
| ROMANIA | Accession | 21/03/1958 | |
| SALVADOR | Signature | 14/05/1954 | |
| SAN MARINO | Signature | 14/05/1954 | |
| SAN MARINO | Ratification | 09/02/1956 | |
| SENEGAL | Accession | 17/06/1987 | 17/09/1987 |
| SLOVAK REPUBLIC | Succession | 31/03/1993 | 01/01/1993 |
| SLOVENIA | Succession | 28/10/1992 | |
| SOVIET UNION | Signature | 14/05/1954 | |
| SOVIET UNION | Ratification | 04/01/1957 | |
| SPAIN | Accession | 26/06/1992 | 26/09/1992 |
| SWEDEN | Accession | 22/01/1985 | 22/04/1985 |
| SWITZERLAND | Accession | 15/05/1962 | |
| SYRIA | Signature | 14/05/1954 | |
| SYRIA | Ratification | 06/03/1958 | |
| TAJIKISTAN | Succession | 11/08/1992 | |
| THAILAND | Accession | 02/05/1958 | |
| TUNISIA | Accession | 28/01/1981 | 28/04/1981 |
| TURKEY | Accession | 15/12/1965 | |
| UKRAINE | Signature | 14/05/1954 | |
| UKRAINE | Ratification | 06/02/1957 | 06/02/1957 |
| UNITED KINGDOM | Accession | 12/09/2017 | |
| UNITED KINGDOM | Declaration | 12/09/2017 | |
| URUGUAY | Signature | 14/05/1954 | |
| UZBEKISTAN | Succession | 21/02/1996 | |
| VATICAN CITY | Accession | 24/02/1958 | |
| YEMEN | Accession | 06/02/1970 | 06/05/1970 |
| YUGOSLAVIA, FEDERAL REPUBLIC OF | Accession | 11/09/2001 | 27/04/1992 |