1904 state leaders - Events of 1905 - 1906 state leaders - State leaders by year
Africa
Asia
Australia and Oceania
Europe
North America and Caribbean
- Canada
- Costa Rica - Ascensión Esquivel Ibarra, President of Costa Rica (1902–1906)
- Cuba - Tomás Estrada Palma, President of Cuba (1902-1906)
- Dominican Republic - Carlos Felipe Morales, President of the Dominican Republic (1903-1906)
- El Salvador - Pedro José Escalón, President of El Salvador (1903-1907)
- Guatemala - Manuel Estrada Cabrera, President of Guatemala (1898-1920)
- Haiti - Pierre Nord Alexis, President of Haiti (1902-1908)
- Honduras - Manuel Bonilla, President of Honduras (1903-1907)
- México: Porfirio Díaz, President of Mexico (1884 - 1911)
- Nicaragua - José Santos Zelaya, President of Nicaragua (1893-1909)
- Panama - Manuel Amador Guerrero, President of Panama (1904-1908)
- United States - Theodore Roosevelt, President of the United States (1901-1909)
South America
- Argentina: Manuel A. Quintana, President of Argentina (1904–1906)
- Bolivia: Ismael Montes, President of Bolivia (1904–1909)
- Brazil: Francisco de Paula Rodrigues Alves, President of Brazil (1902–1906)
- Chile: Germán Riesco, President of Chile (1901–1906)
- Colombia: Rafael Reyes, President of Colombia (1904–1909)
- Ecuador:
- Leónidas Plaza, President of Ecuador (1901–1905)
- Lizardo García, President of Ecuador (1905–1906)
- Paraguay:
- Juan Bautista Gaona, Provisional President of Paraguay (1904–1905)
- Cecilio Báez, Provisional President of Paraguay (1905–1906)
- Peru: José Pardo y Barreda, President of Peru (1904–1908)
- Uruguay - José Batlle y Ordóñez, President of Uruguay (1903-1907)
- Venezuela: Cipriano Castro, President of Venezuela (1899–1908)
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