| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| Anguilla | Extension | 27/03/1950 | |
| ARGENTINA | Signature | 10/07/1948 | |
| ARGENTINA | Ratification | 24/09/1956 | |
| BANGLADESH | Signature | 10/07/1948 | |
| BANGLADESH | Ratification | 22/06/1972 | |
| BARBADOS | Accession | 15/01/1976 | |
| Bermuda | Extension | 27/03/1950 | |
| BOLIVIA | Signature | 10/07/1948 | |
| BOLIVIA | Ratification | 15/11/1973 | |
| BOSNIA AND HERZEGOVINA | Ratification | 02/06/1993 | 02/06/1993 |
| British Virgin Islands | Extension | 27/03/1950 | |
| BURUNDI | Signature | 10/07/1948 | |
| BURUNDI | Ratification | 30/07/1971 | |
| BYELORUSSIA S S R | Signature | 10/07/1948 | |
| BYELORUSSIA S S R | Ratification | 06/11/1956 | |
| CAMEROON | Signature | 10/07/1948 | |
| CAMEROON | Ratification | 25/05/1970 | |
| CEYLON | Signature | 10/07/1948 | |
| CEYLON | Ratification | 18/05/1959 | |
| COSTA RICA | Signature | 10/07/1948 | |
| COSTA RICA | Ratification | 02/06/1960 | |
| CUBA | Signature | 10/07/1948 | |
| CUBA | Ratification | 29/04/1952 | |
| CYPRUS | Ratification | 18/10/1965 | |
| CZECH REPUBLIC | Accession | 01/01/1993 | 01/01/1993 |
| CZECHOSLOVAKIA | Signature | 10/07/1948 | |
| CZECHOSLOVAKIA | Ratification | 12/06/1950 | |
| DOMINICAN REPUBLIC | Signature | 10/07/1948 | |
| DOMINICAN REPUBLIC | Ratification | 12/08/1957 | |
| Falkland Islands | Extension | 27/03/1950 | |
| FRANCE | Ratification | 30/07/1985 | 30/07/1986 |
| GHANA | Statement | 10/07/1948 | |
| GHANA | Ratification | 04/04/1961 | |
| Gibraltar | Extension | 27/03/1950 | |
| GREECE | Signature | 10/07/1948 | |
| GREECE | Ratification | 30/03/1962 | |
| GUATEMALA | Signature | 10/07/1948 | |
| GUATEMALA | Ratification | 13/02/1952 | |
| GUINEA | Ratification | 12/12/1966 | |
| HAITI | Signature | 10/07/1948 | |
| HAITI | Ratification | 12/04/1957 | |
| Hong Kong | Extension | 09/08/1978 | 09/08/1978 |
| Hong Kong | Extension | 11/08/1980 | |
| Hong Kong | Extension | 09/04/1981 | |
| INDIA | Signature | 10/07/1948 | |
| INDIA | Ratification | 27/02/1950 | |
| ISRAEL | Signature | 10/07/1948 | |
| ISRAEL | Ratification | 23/12/1953 | |
| ITALY | Signature | 10/07/1948 | |
| ITALY | Ratification | 22/10/1952 | |
| KYRGYZSTAN | Ratification | 31/03/1992 | 31/03/1992 |
| LEBANON | Signature | 10/07/1948 | |
| LEBANON | Ratification | 26/07/1962 | |
| LITHUANIA | Accession | 26/09/1994 | 26/09/1995 |
| LUXEMBOURG | Signature | 10/07/1948 | |
| LUXEMBOURG | Ratification | 03/03/1958 | |
| MAURITANIA | Ratification | 08/11/1963 | |
| MEXICO | Signature | 10/07/1948 | |
| MEXICO | Ratification | 20/06/1956 | |
| Montserrat | Extension | 27/03/1950 | |
| NETHERLANDS THE | Signature | 10/07/1948 | |
| NETHERLANDS THE | Ratification | 27/10/1954 | |
| NETHERLANDS THE | Declaration | 01/01/1986 | 01/01/1986 |
| NORWAY | Signature | 10/07/1948 | |
| NORWAY | Ratification | 20/05/1957 | |
| PAKISTAN | Signature | 10/07/1948 | |
| PAKISTAN | Ratification | 14/02/1951 | |
| PARAGUAY | Ratification | 21/03/1966 | |
| PERU | Signature | 10/07/1948 | |
| PERU | Ratification | 04/04/1962 | |
| PHILIPPINES | Signature | 10/07/1948 | |
| PHILIPPINES | Ratification | 29/12/1953 | |
| POLAND | Ratification | 26/06/1968 | |
| SAUDI ARABIA | Signature | 10/07/1948 | |
| SAUDI ARABIA | Ratification | 15/06/1978 | 15/06/1979 |
| SLOVAK REPUBLIC | Ratification | 01/01/1993 | 01/01/1993 |
| SOVIET UNION | Signature | 10/07/1948 | |
| SOVIET UNION | Ratification | 10/08/1956 | |
| SPAIN | Signature | 10/07/1948 | |
| SPAIN | Ratification | 05/05/1971 | |
| St Helena Dependencies | Extension | 27/03/1950 | |
| SWAZILAND | Signature | 10/07/1948 | |
| SWAZILAND | Ratification | 05/06/1981 | 05/06/1982 |
| TAJIKISTAN | Ratification | 26/11/1993 | 26/11/1993 |
| TUNISIA | Signature | 10/07/1948 | |
| TUNISIA | Ratification | 26/04/1961 | |
| UKRAINE | Signature | 10/07/1948 | |
| UKRAINE | Ratification | 14/09/1956 | |
| UNITED KINGDOM | |||
| URUGUAY | Signature | 10/07/1948 | |
| URUGUAY | Ratification | 18/03/1954 | |
| YUGOSLAVIA | Signature | 10/07/1948 | |
| YUGOSLAVIA | Ratification | 20/02/1957 | |
| YUGOSLAVIA, FEDERAL REPUBLIC OF | Ratification | 24/11/2000 | 24/11/2000 |