1963 state leaders - Events of 1964 - 1965 state leaders - State leaders by year
Africa
Asia
Australia and Oceania
Europe
Middle East
North America and the Caribbean
South America
- Argentina - Arturo Umberto Illia, President of Argentina (1963–1966)
- Bolivia -
- Víctor Paz Estenssoro, President of Bolivia (1960–1964)
- Alfredo Ovando Candía, President of Bolivia (1964)
- René Barrientos Ortuño, President of Bolivia (1964–1965)
- Brazil -
- João Goulart, President of Brazil (1961-1964)
- Pascoal Ranieri Mazzilli, Acting President of Brazil (1964)
- Humberto de Alencar Castelo Branco, President of Brazil (1964-1967)
- Chile -
- Jorge Alessandri Rodríguez, President of Chile (1958–1964)
- Eduardo Frei Montalva, President of Chile (1964–1970)
- Colombia - Guillermo León Valencia, President of Colombia (1962–1966)
- Ecuador - Ramón Castro Jijón, President of Ecuador (1963–1966)
- British Guiana
- Paraguay - Alfredo Stroessner, President of Paraguay (1954-1989)
- Peru - Fernando Belaunde Terry, President of Peru (1963-1968)
- Suriname -
- Uruguay -
- Daniel Fernández Crespo, President of Uruguay (1963–1964)
- Luis Giannattasio, President of Uruguay (1964–1965)
- Venezuela -
- Rómulo Betancourt, President of Venezuela (1959–1964)
- Raúl Leoni, President of Venezuela (1964–1969)
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