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)
- Mexico - 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)
- 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 Ordóńez, President of Uruguay (1903-1907)
- Venezuela - Cipriano Castro, President of Venezuela (1899-1909)
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