List of State Leaders in 1977 - South America

South America

• Argentina
  • President - Jorge Rafael Videla, President of Argentina (1976–1981)
• Bolivia
  • President - Hugo Banzer, President of Bolivia (1971–1978)
• Brazil
  • President - Ernesto Geisel, President of Brazil (1974–1979)
• Chile
  • President - Augusto Pinochet, President of Chile (1974–1990)
• Colombia
  • President - Alfonso López Michelsen, President of Colombia (1974–1978)
• Ecuador
  • Head of State - Alfredo Poveda, President of the Supreme Government Council of Ecuador (1976–1979)
• Falkland Islands (British crown colony)
  • Governor -
    1. Sir Neville Arthur Irwin French, Governor of the Falkland Islands (1975–1977)
    2. Sir James Roland Walter Parker, Governor of the Falkland Islands (1977–1980)
• Guyana
  • President - Arthur Chung, President of Guyana (1970–1980)
  • Prime Minister - Forbes Burnham, Prime Minister of Guyana (1964–1980)
• Paraguay
  • President - Alfredo Stroessner, President of Paraguay (1954–1989)
• Peru
  • Head of State - Francisco Morales Bermúdez, President of the Revolutionary Government of the Armed Forces of Peru (1975–1980)
  • Prime Minister - Guillermo Arbulú Galliani, President of the council of ministers of Peru (1976–1978)
• Suriname
  • President - Johan Ferrier, President of Suriname (1968–1980)
  • Prime Minister - Henck Arron, Prime Minister of Suriname (1973–1980)
• Uruguay
  • President - Aparicio Méndez, President of Uruguay (1976–1981)
• Venezuela
  • President - Carlos Andrés Pérez, President of Venezuela (1974–1979)