Allied leaders of World War I

The Allied leaders of World War I consists of the political and military figures that fought for or supported the Allies during World War I.

Russia

 * Nicholas II – last Czar of Russia, titular King of Poland, and Grand Duke of Finland. His rule ended with the Russian Revolution. Nicholas was killed on 17 July 1918.
 * Grand Duke Nicholas Nikolaevich – Commander-in-chief and viceroy in the Caucasus
 * Alexander Samsonov – Commander of the Russian Second Army for the invasion of East Prussia
 * Paul von Rennenkampf – Commander of the Russian First Army for the invasion of East Prussia
 * Nikolai Ivanov – Commander of the Russian army on the Southwestern Front, responsible for much of the action in Galicia
 * Aleksei Brusilov – Commander of the south, then provisional Commander-in-Chief after the Tsar's abdication

[[france|🇫🇷]] France

 * Raymond Poincaré – President of France, 1913–1920
 * Georges Clemenceau – Prime Minister of France
 * Joseph Joffre – Commander-in-Chief of the French Army and Marshal of France
 * Ferdinand Foch – Commander-in-Chief of the French Army and Marshal of France, "Generalissimo of the Allied Armies" from spring 1918.
 * Robert Nivelle – Commander-in-Chief of the French Army
 * Philippe Pétain – Commander-in-Chief of the French Army and Marshal of France

United Kingdom

 * George V – King of the United Kingdom and the other Commonwealth Realms, Emperor of India
 * H. H. Asquith – Prime Minister of the United Kingdom (until 1916)
 * David Lloyd George – Prime Minister of the United Kingdom (from 1916 to 1922)
 * Douglas Haig – Commander-in-Chief of the BEF
 * John Jellicoe – Commanding officer of the Grand Fleet (1914–1916), First Sea Lord (1916–1917)
 * Horatio Herbert Kitchener – Secretary of State for War (5 August 1914 – 5 June 1916)

Serbia

 * Peter I – King of Serbia
 * Crown Prince Alexander – Regent, Commander-in-Chief
 * Nikola Pašić – Prime Minister

[[belgium|🇧🇪]] Belgium

 * Albert I of Belgium – King of Belgium
 * Gerard Leman - Belgian general in the Battle of Liege

Italy

 * Victor Emmanuel III – King of Italy
 * Vittorio Orlando - Prime Minister of Italy at the end of the war.
 * Luigi Cadorna – Commander-in-Chief of the Italian army
 * Armando Diaz – Chief of General Staff of the Italian army
 * Lugi Amedeo – Commander-in-Chief of the Adriatic Fleet of Italy

Romania

 * Constantin Prezan – Chief of the General Staff of Romania
 * Alexandru Averescu – Prime Minister of Romania

[[united states|🇺🇸]] United States of America

 * Woodrow Wilson – President of the United States
 * Thomas R. Marshall – Vice President of the United States
 * John J. Pershing – Commander of the American Expeditionary Force

Japan

 * Emperor Taishō – Emperor of Japan
 * Ōkuma Shigenobu – Prime Minister of Japan (16 April 1914 – 9 October 1916)
 * Terauchi Masatake – Prime Minister of Japan (9 October 1916 – 29 September 1918)
 * Hara Takashi – Prime Minister of Japan (29 September 1918 – 4 November 1921)

[[brazil|🇧🇷]] Brazil

 * Venceslau Bras – President of Brazil
 * Pedro Frontin – Brazilian Admiral
 * Dr. Nabuco Gouveia – Chief of the Brazilian Medical Delegation

Greece

 * Eleftherios Venizelos – Prime Minister
 * Pavlos Kountouriotis
 * Panagiotis Danglis

[[thailand|🇹🇭]] Siam

 * Rama VI – King of Siam