Jean-Paul Belmondo as François Merlin / Bob Saint-Clar

Jacqueline Bisset as Christine / Tatiana

Vittorio Caprioli as Georges Charron / Colonel Karpov

Hans Meyer as Colonel Collins

Monique Tarbès as Mrs. Berger

Mario David as Traffic policeman in the rain

Bruno Garcin as Pilu

Raymond Gérôme as General Pontaubert

Jean Lefebvre as The Electrician

Fabrizio Moresco as Student with Pipe

André Weber as The Plumber

Hubert Deschamps as Typewriter Seller

Bernard Musson as The French Interpreter who speaks Czech

Thalie Frugès as Publishing House Hostess

René Barrera as The Chinese / The Bride

Rodrigo Puebla as Benson

Jean-Pierre Rambal as The Lecturer

Gaëtan Noël as Doctor

Micha Bayard as Charron's Secretary

Roger Muni as The Doctor at the Airport

Victor Jarson as

Caline Bautte as

Claude Salino as

Jean-Paul Jarre as

Max Desrau as The Albanian Interpreter who speaks Romanian

Robert Berri as The Commander

Lucienne Legrand as Woman

Guy Simonnet as

Sébastien Floche as The Serbian Interpreter who speaks Russian

Laure Moutoussamy as Charron's Friend

Michel Thomass as Fake Pope

Pierre Assena as Jean (uncredited)

Maurice Auzel as Airport Mechanic (uncredited)

Jack Bérard as The Russian Interpreter who speaks Czech (uncredited)

Philippe de Broca as Second Plumber (uncredited)

Henri Czarniak as Soldier (uncredited)

Raoul Guylad as The Albanian (uncredited)

Charly Koubesserian as Guard (uncredited)

Alexandre Mnouchkine as Paramedic at the back of Ambulance (uncredited)

Louis Navarre as The Romanian Interpreter who speaks Serbian (uncredited)

José Paul as Merlin's Son (uncredited)

Jacques Wajsmark as Minor Role (uncredited)