Pedro Eugenio Aramburu Silveti was an Argentine Army general who was the dictator of Argentina from November 13, 1955, to May 1, 1958. He was a major figure behind the Revolución Libertadora, the military coup against Juan Perón in 1955. He was kidnapped by the left-wing organization Montoneros on May 29, 1970, and assassinated as part of retaliation. He had been involved in the June 1956 execution of Army General Juan José Valle—associated with the Peronist movement— and 26 Peronist militants, after a botched attempt to overthrow his regime.

Revolución Libertadora was the coup d'état that ended the second presidential term of Juan Perón in Argentina, on 16 September 1955.