Franco Nero
Carabinieri Colonel Dante Matucci
Anthony Quinn
Bruno Manzini
Martin Balsam
Captain Steffanelli
Claudia Cardinale
Elena Leporello
Sybil Danning
Lili Anders
Christopher Lee
Prince Baldasar, the Director of Counterintelligence
Cleavon Little
Major Carl Malinowski, USMC
Paul L. Smith
The Surgeon
John Steiner
Captain Roditi
Eli Wallach
General Leporello
Renzo Palmer
Carabinieri Major Giorgione
Anita Strindberg
Princess Faubiani
Marino Masé
Captain Rigoli
Jacques Herlin
Woodpecker
Fortunato Arena
General Pantaleone
John Stacy
Concierge
Andrea Esterhazy
Minister of Defense
Larry Dolgin
Captain Roditi (voice) (uncredited)
Tony Brandt
Gianni Bandanelli, Pantaleone's Lawyer (uncredited)
Omero Capanna
Hitman (uncredited)
Attilio Dottesio
Party Guest of Manzini's (uncredited)
Tom Felleghy
Man at Funeral (uncredited)
Alfonso Giganti
Man at Funeral (uncredited)
Margherita Horowitz
Wife of Minister of Defense (uncredited)
Gitte Lee
Princess Baldasar (uncredited)
Nello Pazzafini
Manzini's Bodyguard (uncredited)
Amedeo Salamon
Banquet Guest (uncredited)
Frank Nuyen
Man at Pantaleone's funeral (uncredited)