Pierre-Paul-Henri-Gaston Doumergue (August 11, 1863 at Aigues-Vives , France-June 18, 1937 at Aigues-Vives , France) was a French politician of the Third Republic.

Beginning as a Radical, Doumergue became conservative in his old age. He served as Prime Minister from December 9, 1913 to June 2, 1914, President from June 13, 1924 to June 13, 1931, and again as Prime Minister in a conservative national unity government in February 9 - November 8, 1934.

Doumergue's First Ministry, 9 December 1913 - 9 June 1914

• Gaston Doumergue - President of the Council and Minister of Foreign Affairs
• Joseph Noullens - Minister of War
• René Renoult - Minister of the Interior
• Joseph Caillaux - Minister of Finance
• Albert Métin - Minister of Labour and Social Security Provisions
• Jean-Baptiste Bienvenu-Martin - Minister of Justice
• Ernest Monis - Minister of Marine
• René Viviani - Minister of Public Instruction and Fine Arts
• Maurice Raynaud - Minister of Agriculture
• Albert Lebrun - Minister of Colonies
• Fernand David - Minister of Public Works
• Louis Malvy - Minister of Commerce, Industry, Posts, and Telegraphs

Changes

• 17 March 1914 - René Renoult succeeds Caillaux as Finance Minister. Louis Malvy succeeds Renoult as Minister of the Interior. Raoul Péret succeeds Malvy as Minister of Commerce, Industry, Posts, and Telegraphs.
• 20 March 1914 - Armand Gauthier de l'Aude succeeds Monis as Minister of Marine.

Doumergue's Second Ministry, 9 February - 8 November 1934

• Gaston Doumergue - President of the Council
• Louis Barthou - Minister of Foreign Affairs
• Philippe Pétain - Minister of War
• Albert Sarraut - Minister of the Interior
• Louis Germain-Martin - Minister of Finance
• Adrien Marquet - Minister of Labour
• Henri Chéron - Minister of Justice
• François Piétri - Minister of Military Marine
• William Bertrand - Minister of Merchant Marine
• Victor Denain - Minister of Air
• Aimé Berthod - Minister of National Education
• Georges Rivollet - Minister of Pensions
• Henri Queuille - Minister of Agriculture
• Pierre Laval - Minister of Colonies
• Pierre Étienne Flandin - Minister of Public Works
• Louis Marin - Minister of Public Health and Physical Education
• André Mallarmé - Minister of Posts, Telegraphs, and Telephones
• Lucien Lamoureux - Minister of Commerce and Industry
• Édouard Herriot - Minister of State
• André Tardieu - Minister of State

Changes

• 13 October 1934 - Pierre Laval succeeds Barthou (assassinated 9 October) as Minister of Foreign Affairs. Paul Marchandeau succeeds Sarraut as Minister of the Interior. Louis Rollin succeeds Laval as Minister of Colonies.
• 15 October 1934 - Henri Lémery succeeds Chéron as Minister of Finance.

|- style="text-align: center;" | width="30%" |Preceded by:
— | width="40%" style="text-align: center;" |Minister of Labour
1906 | width="30%" |Succeeded by:
René Viviani

|- style="text-align: center;" | width="30%" |Preceded by:
Georges Trouillot | width="40%" style="text-align: center;" |Minister of Commerce and Industry
1906–1908 | width="30%" |Succeeded by:
Jean Cruppi

|- style="text-align: center;" | width="30%" |Preceded by:
Aristide Briand | width="40%" style="text-align: center;" |Minister of Public Instruction and Fine Arts
1908–1910 | width="30%" |Succeeded by:
Maurice Faure

|- style="text-align: center;" | width="30%" |Preceded by:
Louis Barthou | width="40%" style="text-align: center;" |Prime Minister of France
1913–1914 | width="30%" |Succeeded by:
Alexandre Ribot

|- style="text-align: center;" | width="30%" |Preceded by:
Stéphen Pichon | width="40%" style="text-align: center;" |Minister of Foreign Affairs
1913–1914 | width="30%" |Succeeded by:
Léon Bourgeois

|- style="text-align: center;" | width="30%" |Preceded by:
René Viviani | width="40%" style="text-align: center;" |Minister of Foreign Affairs
1914 | width="30%" |Succeeded by:
Théophile Delcassé

|- style="text-align: center;" | width="30%" |Preceded by:
Maurice Raynaud | width="40%" style="text-align: center;" |Minister of Colonies
1914–1917 | width="30%" |Succeeded by:
André Maginot

|- style="text-align: center;" | width="30%" |Preceded by:
Léon Bourgeois | width="40%" style="text-align: center;" |President of the Senate
1923–1924 | width="30%" |Succeeded by:
Justin de Selves

|- style="text-align: center;" | width="30%" |Preceded by:
Alexandre Millerand | width="40%" style="text-align: center;" |President of France
1924–1931 | width="30%" |Succeeded by:
Paul Doumer

|- style="text-align: center;" | width="30%" |Preceded by:
Édouard Daladier | width="40%" style="text-align: center;" |Prime Minister of France
1934 | width="30%" |Succeeded by:
Pierre Étienne Flandin