Óscar Únzaga de la Vega (19 April 1916 – 19 April 1959) was a Bolivian political figure and rebel. He, most significantly, founded the Bolivian Socialist Falange movement in 1937, and ran for President in the 1956 elections, when his party became the main opposition movement to the Movimiento Nacionalista Revolucionario (MNR). Unzaga, originally an educator, was assassinated in 1959, ostensibly as he planned to enlist military help in an attempt to dislodge the MNR from power. He is revered as a hero/martyr by some factions of the well-to-do Bolivian political elites.