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Party Signature Provisional
application
RatificationS=Signature without reservation or requirement of ratification R=Ratification, Acceptance, Approval or Notification A=Accession Su=Succession NK=Not Known Entry into force Renunciation Termination
Albania 20-04-1921 08-10-1921 (R) 08-10-1921
Antigua and Barbuda 25-10-1988 (Su) 01-11-1981
Australia 31-10-1922 (A) 31-10-1922
Austria 20-04-1921 10-07-1924 (R) 10-07-1924
Belgium 20-04-1921 16-05-1927 (R) 16-05-1927
Bolivia 20-04-1921
Bulgaria 20-04-1921 11-07-1922 (R) 11-07-1922
Canada 31-10-1922 (A) 31-10-1922
Chile 20-04-1921 19-03-1928 (R) 19-03-1928
China 20-04-1921
Croatia 03-08-1992 (Su) 08-10-1991
Czech Republic 09-02-1996 (Su) 01-01-1993
Czechoslovakia (<01-01-1993) 20-04-1921 08-09-1924 (R) 08-09-1924
Denmark 20-04-1921 13-11-1922 (R) 13-11-1922
Estonia 20-04-1921 (S) 20-04-1921
Eswatini 16-10-1970 (A) 16-10-1970
Fiji 15-03-1972 (Su) 10-10-1970
Finland 22-09-1922 (A) 22-09-1922
France 20-04-1921 (S) 20-04-1921
Germany 10-11-1931 (A) 10-11-1931
Greece 20-04-1921 03-01-1928 (R) 03-01-1928
Guatemala 20-04-1921
Hungary 18-05-1928 (A) 18-05-1928
India 20-04-1921 09-10-1922 (R) 09-10-1922
Iran 20-04-1921
Iraq 17-04-1935 (A) 17-04-1935
Italy 20-04-1921 (S) 20-04-1921
Japan 20-04-1921 20-02-1924 (R) 20-02-1924
Latvia 20-04-1921 12-02-1924 (R) 12-02-1924
Lesotho 23-10-1973 (Su) 04-10-1966
Lithuania 20-04-1921
Malawi 11-06-1969 (Su) 01-01-1964
Malta 21-09-1966 (Su) 21-09-1964
Mauritius 18-07-1969 (Su) 12-03-1968
Mexico 17-10-1935 (A) 17-10-1935
Mongolia 15-10-1976 (A) 15-10-1976
Netherlands, the Kingdom of the 28-11-1921 (S) 28-11-1921
New Zealand 20-04-1921 09-10-1922 (R) 09-10-1922
Norway 20-04-1921 04-09-1923 (R) 04-09-1923
Panama 20-04-1921
Peru 15-09-1924 (A)
Poland 20-04-1921 20-12-1924 (R) 20-12-1924
Portugal 20-04-1921
Romania 22-02-1923 (A) 22-02-1923
Russian Federation 16-05-1935 (A) 16-05-1935
Rwanda 10-02-1965 (Su) 01-07-1962
Saint Vincent and the Grenadines 05-09-2001 (Su) 27-10-1979
Slovakia 28-05-1993 (Su) 01-01-1993
Solomon Islands 03-09-1981 (Su) 07-07-1978
South Africa 31-10-1922 (A) 31-10-1922
Spain 20-04-1921 01-07-1929 (R) 01-07-1929
Sweden 20-04-1921 19-01-1925 (R) 19-01-1925
Switzerland 20-04-1921 (S) 20-04-1921
Thailand 29-11-1922 (A) 29-11-1922
Türkiye 27-06-1933 (A) 27-06-1933
United Kingdom 20-04-1921 09-10-1922 (R) 09-10-1922
Uruguay 20-04-1921
Yugoslavia (< 25-06-1991) 20-04-1921 07-05-1930 (R) 07-05-1930
Zimbabwe 01-12-1998 (Su) 18-04-1980