Charles Bronson
Joe Valachi
Anthony Dawson
Federal Investigator
Joseph Wiseman
Salvatore Maranzano
Joe Don Baker
Irish member of Valachi gang (uncredited)
Walter Chiari
Dominick Petrilli, aka "Gap"
Lino Ventura
Vito Genovese
Jill Ireland
Maria Reina Valachi
Pupella Maggio
Letizia Reina
Angelo Boscariol
Gangster (uncredited)
Angelo Infanti
Lucky Luciano
Amedeo Nazzari
Gaetano Reina
Alessandro Sperli
Giuseppe 'Joe the Boss' Masseria
Sabine Sun
Jane (uncredited)
Franco Ressel
(uncredited)
Fausto Tozzi
Albert Anastasia
Franco Borelli
Buster
Arny Freeman
Warden (uncredited)
Gerald S. O'Loughlin
Ryan, federal agent
Isabelle Marchall
Mary-Lou (uncredited)
Ron Gilbert
Prison Guard (uncredited)
Syl Lamont
Commander of Fort Monmouth (uncredited)
María Baxa
Donna Petrillo
Bruno Di Luia
Luciano's Henchman (uncredited)
Guido Leontini
Tony Bender
Imelde Marani
Donna Petrillo's friend (uncredited)
Calogero Azzaretto
Man of the clan (uncredited)
Frank Gio
Frank (uncredited)
Nestore Cavaricci
Prisoner with Valachi (uncredited)
Alfonso Giganti
Wedding party guest (uncredited)
Robert Trout
Self (uncredited)
Giacomo De Michelis
Augie (uncredited)
Fred Valleca
Buck
John Alarimo
Steven Ferrigno (uncredited)
Steve Belloise
Winnie (uncredited)
Jason McCallum
Donald Valachi (uncredited)
Richard Dunne
Judge (uncredited)