List of State Leaders in 1946

South America

Argentina
- President -
  1. Edelmiro Julián Farrell, President of Argentina (1944–1946)
  2. Juan Perón, President of Argentina (1946–1955)
Bolivia
- President -
  1. Gualberto Villarroel, President of Bolivia (1944–1946)
  2. Néstor Guillén, Chairman of the Provisional Government Junta of Bolivia (1946)
  3. Tomás Monje, Chairman of the Provisional Government Junta of Bolivia (1946–1947)
Brazil
- President -
  1. José Linhares, President of Brazil (1945–1946)
  2. Eurico Gaspar Dutra, President of Brazil (1946–1951)
Chile
- President -
  1. Juan Antonio Ríos, President of Chile (1942–1946)
  2. Alfredo Duhalde, Acting President of Chile (1946)
  3. Vicente Merino, Acting President of Chile (1946)
  4. Juan Antonio Iribarren, Acting President of Chile (1946)
  5. Gabriel González Videla, President of Chile (1946–1952)
Colombia
- President -
  1. Alberto Lleras Camargo, President of Colombia (1945–1946)
  2. Mariano Ospina Pérez, President of Colombia (1946–1950)
Ecuador
- President - José María Velasco Ibarra, President of Ecuador (1944–1947)
Paraguay
- President - Higinio Moríñigo, President of Paraguay (1940–1948)
Peru
- President - José Bustamante y Rivero, President of Peru (1945–1948)
- Prime Minister -
  1. Rafael Belaúnde Diez Canseco, President of the council of ministers of Peru (1945–1946)
  2. Julio Ernesto Portugal Escobedo, President of the council of ministers of Peru (1946–1947)
Uruguay
- President - Juan José de Amézaga, President of Uruguay (1943–1947)
Venezuela
- President - Romulo Betancourt, President of Venezuela (1945–1948)