René Barrientos Ortuño (30 May 1919 – 27 April 1969) was a Bolivian military officer and politician who served as his country's vice president in 1964 and as its president from 1966 to 1969.
General Barrientos came to power after the 1964 Bolivian coup d'état which overthrew of the government of Paz Estenssoro.
During his three-year rule, Barrientos and the army suppressed leftist opposition to his regime, including a guerrilla group led by Che Guevara in 1967.