Henry Fonda

as Dimitri Koulov

Robert Ryan

as General Bruce

Vittorio Gassman

as Perego / Ferrari

Annie Girardot

as Suzette / Monique

Peter van Eyck

as Petchatkin

Bourvil

as Lalande

Robert Hossein

as Dupont

Wolfgang Lukschy

as Russian General

Mario Adorf

as Callaghan

Jacques Sernas

as Glazov

Georges Marchal

as Serge

Klaus Kinski

as Russian Agent

Gabriel Gobin

as O'Hara

Jackie Blanchot

as Joe

Violette Marceau

as Lisa

Louis Arbessier

as Ivanov

Rossana Canghiari

as Swimming Pool Girl (uncredited)

Nino Crisman

as Colonel de Luca (uncredited)

Oreste Palella

as Carabinieri marshal (uncredited)

Gabriella Giorgelli

as (uncredited)