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)