| Country | Action | Action Date | Effective Date |
|---|
| ARGENTINA | Accession | 10/06/1967 | 10/06/1967 |
| AUSTRALIA | Accession | 01/06/1969 | 01/06/1969 |
| AUSTRALIA | Declaration | 01/06/1969 | |
| AUSTRIA | Signature | 26/06/1948 | |
| AUSTRIA | Accession | 14/09/1953 | 14/08/1953 |
| Bahamas | Extension | | 19/08/1963 |
| BAHAMAS | Succession | 27/07/1976 | 10/07/1973 |
| Belgian Congo | Extension | 14/01/1952 | |
| Belgian Congo | Accession | 05/06/1962 | |
| BELGIUM | Signature | 26/06/1948 | |
| BELGIUM | Ratification | 20/06/1951 | |
| BELGIUM | Declaration | 14/01/1952 | |
| Bermuda | Extension | | 28/01/1963 |
| BRAZIL | Signature | 26/06/1948 | |
| BRAZIL | Accession | 09/05/1952 | |
| British Honduras | Extension | | 16/10/1966 |
| British Virgin Islands | Extension | | 19/08/1963 |
| BULGARIA | Objection | 23/08/1967 | |
| CAMEROON | Accession | 21/09/1964 | |
| CANADA | Signature | 26/06/1948 | |
| Cayman Islands | Extension | | 16/10/1966 |
| CHILE | Accession | 05/06/1970 | 05/06/1970 |
| Comoro Islands | Extension | 22/04/1952 | 22/05/1952 |
| CONGO | Accession | 07/12/1963 | |
| CZECHOSLOVAKIA | Signature | 26/06/1948 | |
| CZECHOSLOVAKIA | Objection | 23/08/1967 | |
| DAHOMEY | Accession | 05/02/1961 | |
| DENMARK | Signature | 26/06/1948 | |
| DENMARK | Accession | 19/02/1962 | 19/02/1962 |
| Falkland Islands | Extension | | 18/10/1963 |
| Fiji | Extension | | 01/01/1753 |
| FIJI | Accession | 10/10/1970 | 10/10/1970 |
| FINLAND | Signature | 16/06/1948 | |
| FINLAND | Accession | 28/12/1962 | |
| FRANCE | Signature | 26/06/1948 | |
| FRANCE | Ratification | 14/03/1951 | |
| FRANCE | Declaration | 22/04/1952 | 22/05/1952 |
| French Cameroons | Extension | 22/04/1952 | 22/05/1952 |
| French Equatorial Africa | Extension | 22/04/1952 | 22/05/1952 |
| French Settlements In India | Extension | 22/04/1952 | 22/05/1952 |
| French Settlements In Oceania | Extension | 22/04/1952 | 22/05/1952 |
| French Somaliland | Extension | 22/04/1952 | 22/05/1952 |
| French Togoland | Extension | 22/04/1952 | 22/05/1952 |
| French West Africa | Extension | 22/04/1952 | 22/05/1952 |
| GABON | Accession | 26/03/1962 | 26/03/1962 |
| GERMANY FEDERAL REPUBLIC | Accession | 27/06/1966 | |
| Gibraltar | Extension | | 06/03/1962 |
| GREECE | Signature | 26/06/1948 | |
| GREECE | Accession | 06/12/1956 | |
| Grenada | Extension | | 16/10/1966 |
| HOLY SEE | Signature | 26/06/1948 | |
| HOLY SEE | Ratification | 20/06/1951 | |
| Hong Kong | Extension | | 05/05/1973 |
| HUNGARY | Signature | 26/06/1948 | |
| HUNGARY | Objection | 23/08/1967 | |
| ICELAND | Signature | 26/06/1948 | |
| INDIA | Accession | 21/09/1958 | |
| IRELAND, REPUBLIC OF | Signature | 26/06/1948 | |
| IRELAND, REPUBLIC OF | Accession | 05/06/1959 | |
| Isle of Man | Extension | | 06/03/1962 |
| ISRAEL | Accession | 24/03/1950 | 24/03/1950 |
| ITALY | Signature | 26/06/1948 | |
| ITALY | Accession | 17/06/1953 | 12/07/1953 |
| IVORY COAST | Accession | 01/01/1962 | 01/01/1962 |
| JAPAN | Accession | 04/06/1974 | 12/07/1974 |
| JAPAN | Declaration | 04/06/1974 | |
| Kenya | Extension | | 18/10/1963 |
| Land Berlin | Extension | 27/06/1966 | |
| LEBANON | Signature | 26/06/1948 | |
| LIECHTENSTEIN | Signature | 26/06/1948 | |
| LIECHTENSTEIN | Ratification | 10/10/1950 | |
| LUXEMBOURG | Signature | 26/06/1948 | |
| LUXEMBOURG | Ratification | 08/04/1950 | |
| Madagascar And Dependencies | Extension | 22/04/1952 | 22/05/1952 |
| MALAGASY REPUBLIC | Accession | 11/02/1966 | |
| MALI | Accession | 05/06/1962 | |
| Mauritania | Extension | 22/04/1952 | 22/05/1952 |
| Mauritius | Extension | | 27/12/1964 |
| MAURITIUS | Withdrawal | 08/08/1970 | 18/08/1971 |
| MEXICO | Accession | 11/06/1967 | 11/06/1967 |
| MEXICO | Reservation | 11/06/1967 | |
| MONACO | Signature | 26/06/1948 | |
| MONACO | Ratification | 27/06/1951 | |
| MONTENEGRO | Declaration | | 03/06/2006 |
| Montserrat | Extension | | 27/12/1964 |
| MOROCCO | Signature | 26/06/1948 | |
| Morocco | Extension | 22/04/1952 | 22/05/1952 |
| NETHERLANDS THE | Signature | 26/06/1948 | |
| NETHERLANDS THE | Accession | 16/11/1972 | 07/01/1973 |
| New Caledonia And Dependences | Extension | 22/04/1952 | 22/05/1952 |
| New Hebrides Condominium | Extension | 22/04/1952 | 22/05/1952 |
| NEW ZEALAND | Signature | 26/06/1948 | |
| NIGER | Accession | 02/05/1962 | |
| North Borneo | Extension | | 28/01/1963 |
| NORWAY | Signature | 26/06/1948 | |
| NORWAY | Accession | 28/12/1962 | |
| PAKISTAN | Signature | 26/06/1948 | |
| PHILIPPINES | Accession | 01/08/1951 | 01/08/1951 |
| POLAND | Objection | 23/08/1967 | |
| PORTUGAL | Signature | 26/06/1948 | |
| PORTUGAL | Ratification | 01/07/1951 | |
| PORTUGAL | Declaration | 03/08/1956 | |
| ROMANIA | Objection | 23/08/1967 | |
| Ruanda Urundi | Extension | 14/01/1952 | |
| Sarawak | Extension | | 06/03/1962 |
| SENEGAL | Accession | 25/08/1962 | 25/08/1962 |
| Seychelles | Extension | | 18/10/1963 |
| SOUTH AFRICA | Signature | 26/06/1948 | |
| SOUTH AFRICA | Ratification | 29/03/1950 | |
| SPAIN | Signature | 26/06/1948 | |
| SPAIN | Ratification | 30/06/1951 | |
| St Helena | Extension | | 18/10/1963 |
| St Lucia | Extension | | 01/11/1967 |
| St Pierre and Miquelon | Extension | 22/04/1952 | 22/05/1952 |
| St Vincent | Extension | | 01/11/1967 |
| SWEDEN | Signature | 26/06/1948 | |
| SWEDEN | Accession | 01/07/1961 | 01/07/1961 |
| SWITZERLAND | Signature | 26/06/1948 | |
| SWITZERLAND | Accession | 02/01/1956 | 02/01/1956 |
| SYRIA | Signature | 26/06/1948 | |
| TUNIS | Signature | 26/06/1948 | |
| Tunisia | Extension | 22/04/1952 | 22/05/1952 |
| TURKEY | Accession | 27/11/1951 | 27/11/1951 |
| UNITED KINGDOM | Accession | 15/11/1957 | |
| UNITED KINGDOM | Declaration | 06/03/1962 | 06/03/1962 |
| UNITED KINGDOM | Declaration | 28/01/1963 | 28/01/1963 |
| UNITED KINGDOM | Declaration | 19/08/1963 | 19/08/1963 |
| UNITED KINGDOM | Declaration | 18/10/1963 | 18/10/1963 |
| UNITED KINGDOM | Declaration | 04/11/1963 | 04/11/1963 |
| UNITED KINGDOM | Declaration | 27/12/1964 | 27/12/1964 |
| UNITED KINGDOM | Declaration | 16/10/1966 | 16/10/1966 |
| UNITED KINGDOM | Declaration | 01/11/1967 | 01/11/1967 |
| UNITED KINGDOM | Declaration | 05/05/1973 | 05/05/1973 |
| UNITED KINGDOM | Declaration | 31/10/2013 | |
| UPPER VOLTA | Accession | 19/07/1963 | |
| UPPER VOLTA | Withdrawal | 20/09/1969 | |
| URUGUAY | Accession | 10/07/1967 | 10/07/1967 |
| YUGOSLAVIA | Signature | 26/06/1948 | |
| YUGOSLAVIA | Ratification | 28/06/1951 | |
| Zanzibar | Extension | | 28/01/1963 |