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Founding members
Argentina (left in 1921 on rejection of an Argentine resolution that all sovereign states be admitted to the League.[1] It resumed full membership in 1933 [2])
Belgium
Bolivia
Brazil (withdrew 14 June 1926)
British Empire separate membership for:[3]
United Kingdom
Australia
Canada
India (then under British rule and including the region of present-day India, Bangladesh, Burma, and Pakistan).[3]
New Zealand
South Africa
Chile (withdrew 14 May 1938)
China
Colombia
Cuba -
Period: to
League of Nations
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Countries joined in 1920
Austria (joined 15 December 1920; left 13 March 1938)
Bulgaria (joined 16 December 1920)
Costa Rica (joined 16 December 1920; withdrew 22 January 1925)
Finland (joined 16 December 1920)
Luxembourg (joined 16 December 1920)
Albania (joined 17 December 1920) -
Countries joined in 1921
Estonia (joined 22 September 1921)
Latvia (joined 22 September 1921)
Lithuania (joined 22 September 1921) -
Hungary joined in 1922
Hungary (joined 18 September 1922; withdrew 14 April 1939) -
Countries joined in 1923
Irish Free State (joined 10 September 1923, known as Ireland from 1937)
Abyssinia (joined 28 September 1923) -
Dominican Republic joinged in 1924
Dominican Republic (joined 29 September 1924) -
Germnay joined in 1926
Germany (joined 8 September 1926; withdrew 19 October 1933) -
Mexico joined in 1931
Mexico (joined 23 September 1931) -
Countries joined in 1932
Turkey (joined 18 July 1932)
Kingdom of Iraq (joined 3 October 1932) -
Countries joined in 1934
Union of Soviet Socialist Republics (joined 18 September 1934; expelled 14 December 1939)
Afghanistan (joined 27 September 1934)
Ecuador (joined 28 September 1934) -
Kingdom Of Egypt joined in 1937
Kingdom of Egypt (joined 26 May 1937) -
Countries at end of league
Abyssinia
Afghanistan
Argentina
Belgium
Bolivia
British Empire separate membership for:[3]
United Kingdom
Australia
Canada
India
New Zealand
South Africa
Bulgaria
China
Colombia
Cuba
Czechoslovakia
Dominican Republic
Ecuador
Egypt
Estonia
France
Greece
Iraq
Iran
Ireland
Latvia
Liberia
Lithuania
Mexico
Netherlands
Norway
Panama
Poland Portugal
Thailand
Turkey
Sweden
Switzerland
Uruguay
Yugoslavia