List of State Leaders in 1978 - South America

South America

• Argentina
  • President - Jorge Rafael Videla, President of Argentina (1976–1981)
• Bolivia
  • President -
    1. Hugo Banzer, President of Bolivia (1971–1978)
    2. Víctor González Fuentes, Chairman of the Military Junta of Bolivia (1978)
    3. Juan Pereda, President of Bolivia (1978)
    4. David Padilla, Chairman of the Military Junta of Bolivia (1978–1979)
• Brazil
  • President - Ernesto Geisel, President of Brazil (1974–1979)
• Chile
  • President - Augusto Pinochet, President of Chile (1974–1990)
• Colombia
  • President -
    1. Alfonso López Michelsen, President of Colombia (1974–1978)
    2. Julio César Turbay Ayala, President of Colombia (1978–1982)
• Ecuador
  • Head of State - Alfredo Poveda, President of the Supreme Government Council of Ecuador (1976–1979)
• Falkland Islands (British crown colony)
  • Governor - 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 -
    1. Guillermo Arbulú Galliani, President of the council of ministers of Peru (1976–1978)
    2. Óscar Molina Pallochia, President of the council of ministers of Peru (1978–1979)
• 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)