List of State Leaders in 1966 - South America

South America

• Argentina
  • President -
    1. Arturo Umberto Illia, President of Argentina (1963–1966)
    2. Revolutionary junta, Head of State of Argentina (1966)
    3. Juan Carlos Onganía, President of Argentina (1966–1970)
• Bolivia
  • Head of State -
    1. René Barrientos + Alfredo Ovando Candía, Co-Chairmen of the Military Junta of Bolivia (1965–1966)
    2. Alfredo Ovando Candía, Chairman of the Military Junta of Bolivia (1966)
    3. René Barrientos, President of Bolivia (1966–1969)
• Brazil
  • President - Humberto de Alencar Castelo Branco, President of Brazil (1964–1967)
• Chile
  • President - Eduardo Frei Montalva, President of Chile (1964–1970)
• Colombia
  • President -
    1. Guillermo León Valencia, President of Colombia (1962–1966)
    2. Carlos Lleras Restrepo, President of Colombia (1966–1970)
• Ecuador
  • Head of State -
    1. Ramón Castro Jijón, Chairman of the Military Junta of Ecuador (1963–1966)
    2. Telmo Vargas, Chief of Staff of Armed Forces of Ecuador (1966)
    3. Clemente Yerovi, Interim President of Ecuador (1966)
    4. Otto Arosemena, Interim President of Ecuador (1966–1968)
• Guyana
  • British Guiana gained independence on 26 May 1966
  • Monarch - Elizabeth II, Queen of Guyana (1966–1970)
  • Governor-General -
    1. Sir Richard Luyt, Governor of British Guiana (1964–1966), Governor-General of Guyana (1966)
    2. Sir David Rose, Governor-General of Guyana (1966–1969)
  • Prime Minister - Forbes Burnham, Prime Minister of Guyana (1964–1980)
• Paraguay
  • President - Alfredo Stroessner, President of Paraguay (1954–1989)
• Peru
  • President - Fernando Belaúnde Terry, President of Peru (1963–1968)
  • Prime Minister - Daniel Becerra de la Flor, President of the Council of Ministers of Peru (1965–1967)
• Uruguay
  • Head of State -
    1. Washington Beltrán, President of the National Council of Government of Uruguay (1965–1966)
    2. Alberto Héber Usher, President of the National Council of Government of Uruguay (1966–1967)
• Venezuela
  • President - Raúl Leoni, President of Venezuela (1964–1969)