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