| Country | Action | Action Date | Effective Date |
|---|
| Antigua | Extension | 01/06/1961 | |
| Antilles | Extension | 21/11/1975 | |
| AUSTRALIA | Acceptance | 15/06/1984 | |
| Bahamas | Extension | 01/06/1961 | |
| Barbados | Extension | 01/06/1961 | |
| BELARUS | Ratification | 10/12/1962 | |
| BELGIUM | Ratification | 22/10/1975 | 22/10/1976 |
| Bermuda | Extension | 01/06/1961 | |
| British Guiana | Extension | 01/06/1961 | |
| British Virgin Islands | Extension | 01/06/1961 | |
| BRUNEI DARUSSALAM | Succession | 25/01/1985 | |
| BULGARIA | Ratification | 04/03/1963 | |
| CENTRAL AFRICAN REPUBLIC | Ratification | 20/07/1973 | 20/07/1974 |
| CEYLON | Ratification | 07/12/1959 | |
| CHINA | Ratification | 26/04/1961 | |
| CUBA | Ratification | 01/08/1963 | |
| CZECH REPUBLIC | Succession | 26/03/1993 | 01/01/1993 |
| CZECHOSLOVAKIA | Acceptance | 29/11/1963 | |
| DENMARK | Ratification | 10/11/1964 | |
| Dominica | Extension | 01/06/1961 | |
| DOMINICA, COMMONWEALTH OF | Provisional application | 26/06/1983 | |
| DOMINICAN REPUBLIC | Ratification | 24/08/1972 | 24/08/1973 |
| ECUADOR | Ratification | 08/02/1961 | |
| EGYPT | Ratification | 22/10/1962 | |
| FINLAND | Ratification | 26/05/1967 | |
| FRANCE | Ratification | 30/05/1960 | |
| GEORGIA | Succession | 04/11/1992 | |
| GERMAN DEMOCRATIC REPUBLIC | Accession | 19/02/1975 | 19/02/1976 |
| GERMANY FEDERAL REPUBLIC | Ratification | 03/10/1969 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 03/10/1969 | |
| GHANA | Ratification | 06/12/1963 | |
| Gilbert And Ellice Islands | Extension | 01/06/1961 | |
| Grenada | Extension | 01/06/1961 | |
| GUATEMALA | Ratification | 23/11/1960 | |
| Guernsey, Bailiwick of | Extension | 01/06/1961 | |
| HUNGARY | Acceptance | 10/12/1962 | |
| INDONESIA | Acceptance | 10/01/1967 | |
| IRAQ | Accession | 27/12/1973 | 27/12/1974 |
| Isle of Man | Extension | 01/06/1961 | |
| ISRAEL | Ratification | 04/01/1960 | |
| ITALY | Acceptance | 02/08/1961 | |
| Jamaica | Extension | 01/06/1961 | |
| JAPAN | Acceptance | 29/05/1984 | |
| Jersey | Extension | 01/06/1961 | |
| Land Berlin | Extension | 03/10/1969 | |
| LIBYA | Ratification | 09/01/1973 | 09/01/1974 |
| LUXEMBOURG | Ratification | 13/12/1967 | |
| MALAWI | Withdrawal | 08/03/1968 | |
| Malta | Extension | 01/06/1961 | |
| MALTA | Accession | 18/05/1966 | |
| Montserrat | Extension | 01/06/1961 | |
| MOROCCO | Acceptance | 30/08/1968 | |
| NETHERLANDS THE | Acceptance | 21/11/1975 | |
| NEW ZEALAND | Ratification | 05/02/1963 | |
| NIGERIA | Acceptance | 22/07/1970 | 22/07/1971 |
| NORWAY | Acceptance | 19/09/1968 | |
| PANAMA | Ratification | 17/07/1962 | |
| POLAND | Ratification | 12/02/1970 | 12/02/1971 |
| Rhodesia And Nyasaland | Extension | 01/06/1961 | |
| ROMANIA | Ratification | 09/06/1965 | |
| Seychelles | Extension | 01/06/1961 | |
| Singapore | Extension | 01/06/1961 | |
| SLOVAK REPUBLIC | Succession | 31/01/1993 | 01/01/1993 |
| Solomon Islands | Extension | 01/06/1961 | |
| SOLOMON ISLANDS | Succession | 06/10/1981 | 07/07/1978 |
| SOVIET UNION | Ratification | 08/10/1962 | |
| SPAIN | Ratification | 01/02/1963 | |
| St Kitts Nevis Anguilla | Extension | 01/06/1961 | |
| St Lucia | Extension | 01/06/1961 | |
| St Vincent | Extension | 01/06/1961 | |
| ST VINCENT AND THE GRENADINES | Succession | 22/01/1985 | |
| Surinam | Extension | 21/11/1975 | |
| SWEDEN | Approval | 10/06/1980 | |
| TAJIKISTAN | Succession | 11/08/1992 | |
| Trinidad And Tobago | Extension | 01/06/1961 | |
| UKRAINE | Ratification | 19/12/1962 | |
| UNITED KINGDOM | Acceptance | 01/06/1961 | |
| UNITED STATES OF AMERICA | Ratification | 09/06/1967 | |