The leaders of the League of Nations consisted of a Secretary General and a President of the Assembly selected from member states

League of Nations members

Between 1920 and 1946, a total of 63 countries became member states of the League of Nations. The Covenant forming the League of Nations was included in the Treaty of Versailles and came into force on 10 January 1920...

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Secretaries Generals

— Sir James Eric Drummond, 16th Earl of Perth (1920–1933) — Joseph Avenol (1933–1940) — Seán Lester

Seán Lester

Seán Lester was an Irish diplomat and the last Secretary General of the League of Nations, from 31 August 1940 to 18 April 1946.-Early life:...

 (1940–1946)

Presidents of the Assembly

- Léon Bourgeois

Léon Bourgeois

-Biography:He was born in Paris, and was trained in law. After holding a subordinate office in the department of public works, he became successively prefect of the Tarn and the Haute-Garonne , and then returned to Paris to enter the ministry of the interior...

 1920 — Paul Hymans

Paul Hymans

Paul Louis Adrien Henri Hymans , was a Belgian politician associated with the Liberal Party. He was the first President of the League of Nations, and served again as its president in 1932-33....

 (1st time) 1920–1921 — Herman Adriaan van Karnebeek

Herman Adriaan van Karnebeek

Herman Adriaan van Karnebeek was a Dutch politician. He was Dutch Minister of Foreign Affairs and president of the League of Nations from 1921 until 1922.-Notes:...

 1921–1922 — Agustín Edwards

Agustín Edwards Mac Clure

Agustín Edwards McClure was a Chilean lawyer, diplomat and businessman, and founder of the Santiago edition of El Mercurio newspaper....

 1922–1923 — Cosme de la Torriente y Peraza

Cosme de la Torriente y Peraza

Cosme de la Torriente y Peraza was a Cuban soldier, politician, lawyer and statesman....

 1923–1924 — Giuseppe Motta

Giuseppe Motta

Giuseppe Motta was a Swiss politician, member of the Swiss Federal Council and President of the League of Nations .-Commemoration:...

  1924–1925 — Raoul Dandurand

Raoul Dandurand

Raoul Dandurand, PC was a Canadian politician and longtime organizer in Quebec for the Liberal Party of Canada....

  1925–1926 — Afonso Augusto da Costa  1926–1926 — Momčilo Ninčić

Momcilo Nincic

Momčilo Ninčić was a Serbian politician and economist, and president of the League of Nations 1926-27.He finished school in law and completed a doctorate in Paris...

 1926–1927 — Alberto Guani

Alberto Guani

Alberto Guani was an Uruguayan jurist, diplomat and the Vice President from 1943 to 1947.Alberto Guani was born in Montevideo in 1877...

  1927–1928 — Herluf Zahle

Herluf Zahle

Herluf Zahle was a Danish barrister with the Supreme Court, a career diplomat and the President of the League of Nations from 1928 to 1929.- References :* at Dansk Biografisk Haandleksikon...

  1928–1929 — Jose Gustavo Guerrero

José Gustavo Guerrero

José Gustavo Guerrero , was a Salvadoran diplomat and jurist. He served as the last president of the Permanent Court of International Justice from 1937 to 1945; he was also the first president of the International Court of Justice from 1946 to 1949, and remained on the Court as a regular judge...

 1929–1930 — Nicolae Titulescu

Nicolae Titulescu

Nicolae Titulescu was a well-known Romanian diplomat, at various times government minister, finance and foreign minister, and for two terms President of the General Assembly of the League of Nations . He was a member of the Freemasonry.-Early years:...

 1930–1932 — Paul Hymans

Paul Hymans

Paul Louis Adrien Henri Hymans , was a Belgian politician associated with the Liberal Party. He was the first President of the League of Nations, and served again as its president in 1932-33....

 (2nd time) 1932–1933 — Charles Theodore Te Water

Charles Theodore Te Water

Charles Theodore Te Water was a South African diplomat. He was president of the League of Nations from 1933 until 1934.-Notes:...

 1933–1934 — Rickard Sandler

Rickard Sandler

Rickard Johannes Sandler was a Swedish Social Democratic politician. He served asMinister without Portfolio in the Swedish government from 10 March 1920 to 30 June 1920, Minister for Finance from 1 July 1920 to 27 October 1920, Minister without Portfolio from 13 October 1921 to 19 April 1923,...

  1934 — Francisco Castillo Najera

Francisco Castillo Nájera

Francisco Castillo Nájera was a Mexican diplomat and politician. He was president of the Assembly of League of Nations from 1934 to 1935, ambassador to China and the United States, and Secretary of Foreign Affairs from 1945 to 1946.-References:...

 1934–1935 — Edvard Beneš

Edvard Beneš

Edvard Beneš was a leader of the Czechoslovak independence movement, Minister of Foreign Affairs and the second President of Czechoslovakia. He was known to be a skilled diplomat.- Youth :...

 1935–1936 — Carlos Saavedra Lamas

Carlos Saavedra Lamas

Carlos Saavedra Lamas was an Argentine academic and politician, and in 1936, the first Latin American Nobel Peace Prize recipient.-Biography:...

  1936–1937 — Tevfik Rustu Aras

Tevfik Rüstü Aras

Tevfik Rüştü Aras was a Turkish politician, serving as deputy and foreign minister of Turkey during the Atatürk era .-Early years:...

  1937–1937 — Sir Muhammad Shah Aga Khan

Aga Khan III

Sir Sultan Muhammed Shah, Aga Khan III, GCSI, GCMG, GCIE, GCVO, PC was the 48th Imam of the Shia Ismaili Muslims. He was one of the founders and the first president of the All-India Muslim League, and served as President of the League of Nations from 1937-38. He was nominated to represent India to...

 1937–1938 — Éamon de Valera

Éamon de Valera

Éamon de Valera was one of the dominant political figures in twentieth century Ireland, serving as head of government of the Irish Free State and head of government and head of state of Ireland...

  1938–1939 — Carl Joachim Hambro

Carl Joachim Hambro (1885-1964)

Carl Joachim "C. J." Hambro was a Norwegian journalist, author and leading politician representing the Conservative Party. A ten-term member of the Parliament of Norway, Hambro served as President of the Parliament for twenty of his thirty-eight years in the legislature...

1939–1946