Leonardo Vitale (Italian pronunciation: [leo'nardo vi'ta?le]; 27 June 1941 – 2 December 1984) was a member of the Sicilian Mafia who was one of the first to become an informant, or pentito, although originally his confessions were not taken seriously.
Vitale was a "man of honour" or member of the Altarello di Baida cosca or family, Altarello being a small village just outside Palermo.