Pietro Torretta was a member of the Sicilian Mafia. He was the boss of the Mafia family in the Uditore district in Palermo and one of the protagonists in the First Mafia War. He was initially considered to be the man behind the Ciaculli massacre.

The Ciaculli massacre on 30 June 1963 was caused by a car bomb that exploded in Ciaculli, an outlying suburb of Palermo, killing seven police and military officers sent to defuse it after an anonymous phone call. The bomb was intended for Salvatore "Ciaschiteddu" Greco, head of the Sicilian Mafia Commission and the boss of the Ciaculli Mafia family. Mafia boss Pietro Torretta was considered to be the man behind the bomb attack.