Henry Fonda

Dimitri Koulov

Robert Ryan

General Bruce

Vittorio Gassman

Perego / Ferrari

Annie Girardot

Suzette / Monique

Peter van Eyck

Petchatkin

Bourvil

Lalande

Robert Hossein

Dupont

Wolfgang Lukschy

Russian General

Mario Adorf

Callaghan

Jacques Sernas

Glazov

Georges Marchal

Serge

Klaus Kinski

Russian Agent

Gabriel Gobin

O'Hara

Jackie Blanchot

Joe

Violette Marceau

Lisa

Louis Arbessier

Ivanov

Rossana Canghiari

Swimming Pool Girl (uncredited)

Nino Crisman

Colonel de Luca (uncredited)

Oreste Palella

Carabinieri marshal (uncredited)

Gabriella Giorgelli

(uncredited)

Maria Grazia Buccella

Natalia

Helmut Wildt

Perry

Sylvain Lévignac

Karl

Federico Boido

Sernas' Henchman at First Meeting with Ferrari (uncredited)

Aldo Canti

Carabiniere (uncredited)

Pietro Ceccarelli

Sernas' Bald Henchman (uncredited)

Jürgen Draeger

Professor's Assistant

Horst Janson

Sergeant in Military Office (uncredited)

Al Mancini

Corporal Colombo (uncredited)

Renato Terra

Agente italiano camuffato (uncredited)