Charles Bronson (Joseph Valachi)
Lino Ventura (Vito Genovese)
Jill Ireland (Maria)
Joseph Wiseman (Salvatore Maranzano)
Walter Chiari (Dominick "The Gap" Petrilli)
Amedeo Nazzari (Gaetano Reina)
Fred Valleca (Johnny Beck)
Franco Borelli (Buster)
Anthony Dawson (Federal Investigator)
Alessandro Sperli (Giuseppe Masseria)
Arny Freeman (Penitentiary Warden)
Don Koll (State Trooper)
Saro Urzi (Masseria)
Frank Gio (Frank)
Angelo Infanti (Lucky Luciano)
Syl Lamont (Commander of Fort Monmouth)
Guido Leontini (Bender)
Pupella Maggio (Rosanna Reina)
Gerald O'Loughlin (Ryan)
Mario Pilar (Salerto)
Sabine Sun (Jane)
Fausto Tozzi (Albert Anastasia)
Maria Baxa (Donna Petrillo)