| Country | Action | Action Date | Effective Date |
|---|
| Aden Colony | Extension | 27/03/1950 | |
| Algeria | Extension | 29/03/1930 | |
| ALGERIA | Ratification | 19/10/1962 | |
| ANGOLA | Ratification | 04/06/1976 | |
| Antigua | Extension | 27/03/1950 | |
| ANTIGUA AND BARBUDA | Ratification | 02/02/1983 | |
| ARGENTINA | Ratification | 14/03/1950 | |
| AUSTRALIA | Ratification | 12/06/1959 | |
| AUSTRALIA | Declaration | 08/02/1961 | |
| AUSTRALIA | Declaration | 15/06/1973 | |
| AUSTRALIA | Declaration | 08/02/1996 | 08/02/1996 |
| AUSTRIA | Ratification | 29/09/1928 | |
| Bahamas | Extension | 27/03/1950 | |
| BAHAMAS | Succession | 25/05/1976 | |
| BANGLADESH | Ratification | 22/06/1972 | |
| BARBADOS | Ratification | 08/05/1967 | |
| Basutoland | Extension | 27/03/1950 | |
| Bechuanaland | Extension | 27/03/1950 | |
| Belgian Congo | Extension | 07/11/1956 | |
| BELGIUM | Ratification | 03/10/1927 | |
| BELIZE | Ratification | 15/12/1983 | |
| Bermuda | Extension | 05/09/1966 | |
| BOLIVIA | Ratification | 19/07/1954 | |
| BOSNIA AND HERZEGOVINA | Ratification | 02/06/1993 | |
| BOTSWANA | Ratification | 03/02/1988 | |
| BRAZIL | Ratification | 25/04/1957 | |
| British Honduras | Extension | 27/03/1950 | |
| British Virgin Islands | Extension | 27/03/1950 | |
| Brunei | Decision Resvd. | 01/06/1960 | |
| BULGARIA | Ratification | 05/09/1929 | |
| BURKINA FASO | Ratification | 30/06/1969 | |
| BURMA | Ratification | 30/09/1927 | |
| BURUNDI | Ratification | 11/03/1963 | |
| CAMEROON | Ratification | 03/09/1962 | |
| CAPE VERDE | Ratification | 18/02/1987 | |
| CENTRAL AFRICAN REPUBLIC | Ratification | 09/06/1964 | |
| CHILE | Ratification | 08/10/1931 | |
| CHINA | Ratification | 27/04/1934 | |
| CHINA | Declaration | 20/10/1999 | |
| COLOMBIA | Ratification | 20/06/1933 | |
| COMOROS | Ratification | 23/10/1978 | |
| CROATIA | Ratification | 08/10/1991 | |
| CUBA | Ratification | 06/08/1928 | |
| Cyprus | Extension | 27/03/1950 | |
| CYPRUS | Ratification | 23/09/1960 | |
| CZECH REPUBLIC | Ratification | 01/01/1993 | |
| CZECHOSLOVAKIA | Ratification | 08/02/1927 | |
| DENMARK | Ratification | 31/03/1928 | |
| DENMARK | Declaration | 31/05/1954 | |
| DJIBOUTI | Ratification | 03/08/1978 | |
| Dominica | Extension | 27/03/1950 | |
| DOMINICA, COMMONWEALTH OF | Ratification | 28/02/1983 | |
| DOMINICAN REPUBLIC | Ratification | 05/11/1956 | |
| EGYPT | Ratification | 29/11/1948 | |
| ESTONIA | Ratification | 14/04/1930 | |
| Falkland Islands | Extension | 27/03/1950 | |
| Fiji | Extension | 27/03/1950 | |
| FIJI | Ratification | 19/04/1974 | |
| FINLAND | Ratification | 17/09/1927 | |
| FRANCE | Declaration | 01/01/1905 | |
| FRANCE | Ratification | 04/04/1928 | |
| FRANCE | Declaration | 29/03/1930 | |
| FRANCE | Declaration | 27/11/1974 | |
| GABON | Ratification | 13/06/1961 | |
| GERMANY | Ratification | 18/09/1928 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 01/01/1905 | |
| GHANA | Ratification | 20/05/1957 | |
| Gibraltar | Extension | 29/12/1958 | |
| Gilbert And Ellice Islands | Decision Resvd. | 27/03/1950 | |
| Gold Coast | Extension | 27/03/1950 | |
| GREECE | Ratification | 30/05/1936 | |
| Greenland | Extension | 31/05/1954 | |
| Grenada | Ratification | 27/03/1950 | |
| GRENADA | Ratification | 09/07/1979 | |
| GUATEMALA | Ratification | 02/08/1961 | |
| Guernsey | Extension | 06/10/1926 | |
| GUINEA BISSAU | Ratification | 21/02/1977 | |
| GUYANA | Ratification | 08/06/1966 | |
| HAITI | Ratification | 19/04/1955 | |
| Hong Kong | Extension | 27/03/1950 | |
| HUNGARY | Ratification | 19/04/1928 | |
| INDIA | Ratification | 30/09/1927 | |
| INDONESIA | Ratification | 12/06/1950 | |
| IRAN | Ratification | 10/06/1972 | |
| IRAQ | Ratification | 30/04/1940 | |
| IRELAND, REPUBLIC OF | Ratification | 05/07/1930 | |
| Isle of Man | Extension | 06/10/1926 | |
| ISRAEL | Ratification | 05/05/1958 | |
| ITALY | Declaration | 01/01/1905 | |
| ITALY | Ratification | 15/03/1928 | |
| IVORY COAST | Ratification | 05/05/1961 | |
| Jamaica | Extension | 27/03/1950 | |
| JAMAICA | Ratification | 26/12/1962 | |
| JAPAN | Ratification | 08/10/1928 | |
| Jersey | Extension | 06/10/1926 | |
| Kenya | Extension | 27/03/1950 | |
| KENYA | Ratification | 13/01/1964 | |
| KOREA REPUBLIC OF | Ratification | 29/03/2001 | 29/03/2002 |
| LATVIA | Ratification | 29/05/1928 | |
| LEBANON | Ratification | 01/06/1977 | |
| Leeward Islands | Extension | 27/03/1950 | |
| LESOTHO | Ratification | 31/10/1966 | |
| LITHUANIA | Ratification | 28/09/1934 | |
| LUXEMBOURG | Ratification | 16/04/1928 | |
| MADAGASCAR | Ratification | 10/08/1962 | |
| MALAWI | Ratification | 22/03/1965 | |
| Malaya | Extension | 27/03/1950 | |
| MALAYSIA | Ratification | 11/11/1957 | |
| MALI | Ratification | 17/08/1964 | |
| MALTA | Ratification | 04/01/1965 | |
| MAURITANIA | Ratification | 08/11/1963 | |
| Mauritius | Extension | 27/03/1950 | |
| MAURITIUS | Ratification | 02/12/1969 | |
| MEXICO | Ratification | 12/05/1934 | |
| Montserrat | Extension | 27/03/1950 | |
| Morocco | Extension | 01/01/1905 | |
| MOROCCO | Ratification | 13/06/1956 | |
| Nauru | Extension | 08/02/1961 | |
| NETHERLANDS THE | Ratification | 13/09/1927 | |
| NETHERLANDS THE | Declaration | 13/07/1951 | |
| New Guinea | Extension | 08/02/1961 | |
| NICARAGUA | Ratification | 12/04/1934 | |
| Nigeria | Extension | 27/03/1950 | |
| NIGERIA | Ratification | 17/10/1960 | |
| Norfolk Island | Decision Resvd. | 15/06/1973 | |
| Norfolk Island | Extension | 08/02/1996 | |
| North Borneo | Extension | 27/03/1950 | |
| Northern Rhodesia | Extension | 27/03/1950 | |
| NORWAY | Ratification | 11/06/1929 | |
| Nyasaland | Extension | 27/03/1950 | |
| PAKISTAN | Ratification | 30/09/1927 | |
| PANAMA | Ratification | 19/06/1970 | |
| Papua | Extension | 08/02/1961 | |
| PAPUA NEW GUINEA | Ratification | 01/05/1976 | |
| PERU | Ratification | 08/11/1945 | |
| PHILIPPINES | Ratification | 26/04/1994 | |
| POLAND | Ratification | 28/02/1928 | |
| PORTUGAL | Ratification | 27/03/1929 | |
| PORTUGAL | Declaration | 04/10/1999 | |
| Ruanda Urundi | Extension | 07/11/1956 | |
| RWANDA | Ratification | 18/09/1962 | |
| SAINT LUCIA | Ratification | 14/05/1980 | |
| SAO TOME AND PRINCIPE | Ratification | 01/06/1982 | |
| Sarawak | Decision Resvd. | 27/03/1950 | |
| SARAWAK | Ratification | 03/03/1964 | |
| SENEGAL | Ratification | 22/10/1962 | |
| Seychelles | Decision Resvd. | 27/03/1950 | |
| Sierra Leone | Extension | 27/03/1950 | |
| SIERRA LEONE | Ratification | 13/06/1961 | |
| Singapore | Extension | 27/03/1950 | |
| SINGAPORE | Ratification | 25/10/1965 | |
| SLOVAK REPUBLIC | Ratification | 01/01/1993 | |
| SLOVENIA | Ratification | 09/06/1992 | |
| Solomon Islands | Extension | 27/02/1959 | |
| SOLOMON ISLANDS | Ratification | 06/08/1985 | |
| SOMALI DEMOCRATIC REPUBLIC | Ratification | 11/06/1975 | |
| SOMALIA | Ratification | 18/11/1960 | |
| Somaliland | Ratification | 01/01/1905 | |
| SOUTH AFRICA | Ratification | 30/11/1926 | |
| Southern Rhodesia | Extension | 27/03/1950 | |
| SPAIN | Ratification | 22/02/1929 | |
| St Christopher, Nevis and Anguilla | Extension | 27/03/1950 | |
| St Helena | Extension | 27/03/1950 | |
| St Lucia | Extension | 27/03/1950 | |
| St Vincent | Extension | 27/03/1950 | |
| ST VINCENT AND THE GRENADINES | Ratification | 21/10/1998 | 31/05/1995 |
| SUDAN | Ratification | 18/06/1957 | |
| Surinam | Extension | 13/07/1951 | |
| SURINAME | Ratification | 15/06/1976 | |
| Swaziland | Extension | 27/03/1950 | |
| SWAZILAND | Ratification | 26/04/1978 | |
| SWEDEN | Ratification | 08/09/1926 | |
| SWITZERLAND | Ratification | 01/02/1929 | |
| SYRIA | Ratification | 26/07/1960 | |
| Tanganyika | Extension | 27/03/1950 | |
| TANZANIA | Ratification | 30/01/1962 | |
| THAILAND | Ratification | 05/04/1968 | |
| The Gambia | Extension | 27/03/1950 | |
| Trinidad | Extension | 27/03/1950 | |
| TRINIDAD AND TOBAGO | Ratification | 24/05/1963 | |
| TUNISIA | Ratification | 12/06/1956 | |
| Uganda | Extension | 27/03/1950 | |
| UGANDA | Ratification | 04/06/1963 | |
| UNITED KINGDOM | Ratification | 06/10/1926 | |
| UNITED KINGDOM | Declaration | 27/03/1950 | |
| URUGUAY | Ratification | 06/06/1933 | |
| VENEZUELA | Ratification | 20/11/1944 | |
| YEMEN | Ratification | 14/04/1969 | |
| YUGOSLAVIA | Ratification | 01/04/1927 | |
| YUGOSLAVIA, FEDERAL REPUBLIC OF | Ratification | 24/11/2000 | 24/11/2001 |
| ZAIRE | Ratification | 20/09/1960 | |
| ZAMBIA | Ratification | 02/12/1964 | |
| Zanzibar | Extension | 27/03/1950 | |
| ZANZIBAR | Ratification | 22/06/1964 | |
| ZIMBABWE | Ratification | 06/06/1980 | |