- Jean Seberg
- Patricia Franchini
- Jean-Paul Belmondo
- Michel Poiccard a.k.a. Laszlo Kovacs
- Van Doude
- Self
- Jean-Luc Godard
- The Snitch
- Richard Balducci
- Tolmatchoff
- Daniel Boulanger
- Police Inspector Vital
- Gérard Brach
- Photographer
- Philippe de Broca
- A Journalist
- José Bénazéraf
- Man in a White Car
- Jean Domarchi
- A Drunk
- Jean Douchet
- A Journalist
- Liliane Dreyfus
- Liliane / Minouche (uncredited)
- Michel Fabre
- Police Inspector #2
- Roger Hanin
- Carl Zubart
- Henri-Jacques Huet
- Antonio Berrutti
- Raymond Huntley
- A Journalist
- André S. Labarthe
- Journalist at Orly
- Louiguy
- (uncredited)
- Jacques Lourcelles
- (uncredited)
- Claude Mansard
- Claudius Mansard
- Jean-Pierre Melville
- Parvulesco the Writer
- François Moreuil
- Journalist at Orly
- Michel Mourlet
- Audience in the movie theater
- Guido Orlando
- (uncredited)
- Madame Paul
- (uncredited)
- Jean-Louis Richard
- A Journalist
- Liliane Robin
- Minouche
- Jacques Serguine
- (uncredited)
- Jacques Siclier
- (uncredited)
- Virginie Ullmann
- (uncredited)
- Emile Villion
- (uncredited)
