| Country | Action | Action Date | Effective Date |
|---|
| AFGHANISTAN | Ratification | 04/06/1947 | |
| ANTIGUA AND BARBUDA | Acceptance | 16/02/1982 | |
| ARMENIA | Accession | 26/11/1992 | 26/11/1992 |
| AUSTRALIA | Acceptance | 21/04/1948 | |
| AUSTRIA | Acceptance | 24/06/1947 | |
| AZERBAIJAN | Acceptance | 09/05/1992 | 19/05/1992 |
| BAHRAIN | Acceptance | 18/04/1977 | |
| BARBADOS | Acceptance | 08/05/1967 | |
| BELGIUM | Ratification | 15/01/1948 | |
| BELIZE | Acceptance | 17/11/1981 | |
| BOLIVIA | Ratification | 22/05/1947 | |
| BOSNIA AND HERZEGOVINA | Acceptance | 02/06/1993 | 02/06/1993 |
| BOTSWANA | Acceptance | 27/02/1978 | |
| BRAZIL | Ratification | 13/04/1948 | |
| BURMA | Ratification | 18/05/1948 | |
| BURUNDI | Acceptance | 11/03/1963 | |
| CAMBODIA | Acceptance | 24/02/1969 | |
| CAMEROON | Acceptance | 07/06/1960 | |
| CANADA | Ratification | 31/07/1947 | |
| CAPE VERDE | Acceptance | 03/04/1979 | |
| CENTRAL AFRICAN REPUBLIC | Acceptance | 27/10/1960 | |
| CEYLON | Accession | 28/06/1948 | |
| CHAD | Acceptance | 10/11/1960 | |
| CHINA | Ratification | 04/08/1947 | |
| COLOMBIA | Acceptance | 07/05/1947 | |
| COMOROS | Acceptance | 23/10/1978 | |
| CONGO, DEMOCRATIC REPUBLIC OF | Acceptance | 20/09/1960 | |
| CONGO, REPUBLIC OF | Acceptance | 10/11/1960 | |
| CROATIA | Acceptance | 30/06/1992 | 30/06/1992 |
| CYPRUS | Acceptance | 23/09/1960 | |
| CZECH REPUBLIC | Acceptance | 05/02/1993 | 05/02/1993 |
| DAHOMEY | Acceptance | 12/12/1960 | |
| DENMARK | Ratification | 28/06/1947 | |
| DJIBOUTI | Acceptance | 03/05/1978 | |
| DOMINICA, COMMONWEALTH OF | Acceptance | 17/06/1982 | |
| DOMINICAN REPUBLIC | Ratification | 29/08/1947 | |
| ECUADOR | Acceptance | 15/05/1947 | |
| EQUATORIAL GUINEA | Accession | 30/01/1981 | |
| ERITREA | Acceptance | 07/06/1993 | 07/06/1993 |
| ESTONIA | Acceptance | 13/01/1992 | |
| ETHIOPIA | Ratification | 31/07/1947 | |
| FIJI | Acceptance | 19/04/1974 | |
| FINLAND | Ratification | 28/06/1947 | |
| FRANCE | Ratification | 20/01/1948 | |
| GABON | Acceptance | 14/10/1960 | |
| GAMBIA THE | Acceptance | 29/05/1995 | 29/05/1995 |
| GEORGIA | Acceptance | 22/06/1993 | 22/06/1993 |
| GERMAN DEMOCRATIC REPUBLIC | Acceptance | | 01/01/1974 |
| GREECE | Ratification | 11/12/1947 | |
| GRENADA | Acceptance | 09/07/1979 | |
| GUATEMALA | Ratification | 01/10/1947 | |
| HAYTI | Ratification | 05/07/1948 | |
| HONDURAS | Acceptance | 22/09/1954 | 01/01/1955 |
| ICELAND | Ratification | 17/04/1948 | |
| INDIA | Ratification | 17/11/1947 | |
| INDONESIA | Acceptance | 12/06/1950 | |
| IRAN | Acceptance | 30/04/1947 | |
| IRAQ | Acceptance | 09/09/1947 | |
| IRELAND, REPUBLIC OF | Ratification | 14/06/1947 | |
| ISRAEL | Acceptance | 13/05/1949 | |
| ITALY | Ratification | 11/12/1947 | |
| IVORY COAST | Acceptance | 21/11/1960 | |
| JAMAICA | Acceptance | 26/12/1962 | |
| KAZAKHSTAN | Acceptance | 31/05/1993 | 31/05/1993 |
| KOREA REPUBLIC OF | Acceptance | 09/12/1991 | |
| KYRGYZSTAN | Acceptance | 31/03/1992 | |
| LATVIA | Acceptance | 03/12/1991 | |
| LESOTHO | Acceptance | 02/06/1980 | |
| LITHUANIA | Acceptance | 04/10/1991 | |
| LUXEMBOURG | Ratification | 29/10/1948 | |
| MACEDONIA THE FYR OF | Acceptance | 28/05/1993 | 28/05/1993 |
| MALAGASY REPUBLIC | Acceptance | 01/11/1960 | |
| MALTA | Acceptance | 29/12/1964 | |
| MEXICO | Ratification | 20/04/1948 | |
| MOLDOVA REPUBLIC OF | Acceptance | 28/05/1992 | 08/06/1992 |
| MONGOLIA | Acceptance | 24/05/1968 | |
| NAMIBIA | Acceptance | 03/10/1978 | |
| NEPAL | Acceptance | 30/08/1966 | |
| NETHERLANDS THE | Ratification | 15/01/1948 | |
| NEW ZEALAND | Ratification | 08/07/1947 | |
| NIGERIA | Acceptance | 17/10/1960 | |
| NORWAY | Ratification | 27/11/1947 | |
| OMAN | Acceptance | 31/01/1994 | 31/01/1994 |
| PAKISTAN | Acceptance | 31/10/1947 | |
| PANAMA | Ratification | 13/05/1954 | |
| PARAGUAY | Acceptance | 05/09/1956 | |
| PHILIPPINES | Acceptance | 15/06/1948 | |
| PORTUGAL | Ratification | 11/12/1947 | |
| ROUMANIA | Acceptance | 11/05/1956 | |
| SAINT LUCIA | Acceptance | 09/04/1980 | |
| SALVADOR | Ratification | 21/06/1948 | |
| SAN MARINO | Membership | 18/06/1982 | |
| SAO TOME AND PRINCIPE | Acceptance | 01/06/1982 | |
| SENEGAL | Acceptance | 04/11/1960 | |
| SEYCHELLES | Acceptance | 25/04/1977 | |
| SIAM | Ratification | 25/02/1947 | |
| SINGAPORE | Acceptance | 25/10/1965 | |
| SLOVAK REPUBLIC | Acceptance | 22/01/1993 | 22/01/1993 |
| SLOVENIA | Acceptance | 25/05/1992 | 29/05/1992 |
| SOLOMON ISLANDS | Acceptance | 28/05/1984 | |
| SOMALIA | Acceptance | 18/11/1960 | |
| SOUTH AFRICA | Ratification | 19/06/1947 | |
| SOUTH AFRICA | Acceptance | 26/05/1994 | 26/05/1994 |
| SOUTH AFRICA | Letter | 26/05/1994 | |
| SPAIN | Acceptance | 28/05/1956 | |
| ST KITTS AND NEVIS | Acceptance | 12/06/1996 | 19/06/1996 |
| ST VINCENT AND THE GRENADINES | Acceptance | 31/05/1995 | 31/05/1995 |
| SWEDEN | Ratification | 29/05/1947 | |
| SWITZERLAND | Ratification | 22/08/1947 | |
| SYRIA | Acceptance | 04/12/1947 | |
| TAJIKISTAN | Acceptance | 26/11/1993 | 26/11/1993 |
| TANGANYIKA | Acceptance | 30/01/1962 | |
| TRINIDAD AND TOBAGO | Acceptance | 24/05/1963 | |
| TURKEY | Ratification | 23/02/1948 | |
| TURKMENISTAN | Acceptance | 24/09/1993 | 24/09/1993 |
| UGANDA | Acceptance | 25/03/1963 | |
| UNITED KINGDOM | Signature | 09/10/1946 | |
| UNITED KINGDOM | Ratification | 28/05/1947 | |
| UNITED STATES OF AMERICA | Withdrawal | | 06/11/1977 |
| UNITED STATES OF AMERICA | Acceptance | 02/08/1948 | |
| UNITED STATES OF AMERICA | Re-Accession | 18/02/1980 | |
| UPPER VOLTA | Acceptance | 21/11/1960 | |
| UZBEKISTAN | Acceptance | 13/07/1992 | 13/07/1992 |
| VENEZUELA | Ratification | 13/06/1947 | |
| VIETNAM, SOCIALIST REP OF | Acceptance | 17/01/1980 | |
| VIETNAM, SOCIALIST REP OF | Acceptance | 19/05/1992 | 20/05/1992 |
| YEMEN ARAB REPUBLIC | Acceptance | 20/05/1965 | |
| YEMEN, PEOPLES'S DEMOCRATIC REPUBLIC OF | Acceptance | 14/04/1969 | |
| ZAMBIA | Acceptance | 02/12/1964 | |
| ZIMBABWE | Acceptance | 06/06/1980 | |