 Jean-Paul BelmondoMichel Poiccard / László Kovács | Michel Poiccard / László Kovács |
 Jean SebergPatricia Franchini | Patricia Franchini |
 Daniel BoulangerPolice Inspector Vital | Police Inspector Vital |
 Henri-Jacques HuetAntonio Berrutti | Antonio Berrutti |
 Roger HaninCarl Zubart | Carl Zubart |
 Van DoudeAmerican Journalist, Patricia's Friend | American Journalist, Patricia's Friend |
 Claude MansardClaudius Mansard | Claudius Mansard |
 Liliane DreyfusLiliane / Minouche | Liliane / Minouche |
| MMichel FabrePolice Inspector #2 | Police Inspector #2 |
 Jean-Pierre MelvilleParvulesco the Writer | Parvulesco the Writer |
 Jean-Luc GodardThe Snitch | The Snitch |
 Richard BalducciTolmatchoff | Tolmatchoff |
 André S. LabartheJournalist at Orly | Journalist at Orly |
 François MoreuilJournalist at Orly | Journalist at Orly |
| JJacques LourcellesNot listed | Not listed |
| LLiliane RobinMinouche | Minouche |
 Gérard BrachPhotographer (uncredited) | Photographer (uncredited) |
 Philippe de BrocaA Journalist (uncredited) | A Journalist (uncredited) |
 José BénazérafMan in a White Car (uncredited) | Man in a White Car (uncredited) |
| JJean DomarchiA Drunk (uncredited) | A Drunk (uncredited) |
 Jean DouchetA Journalist (uncredited) | A Journalist (uncredited) |
 Raymond HuntleyA Journalist (uncredited) | A Journalist (uncredited) |
 Louiguy(uncredited) | (uncredited) |
 Michel MourletAudience in the Movie Theater (uncredited) | Audience in the Movie Theater (uncredited) |
| GGuido Orlando(uncredited) | (uncredited) |
| MMadame Paul(uncredited) | (uncredited) |
 Jean-Louis RichardA Journalist (uncredited) | A Journalist (uncredited) |
 Jacques Serguine(uncredited) | (uncredited) |
 Jacques Siclier(uncredited) | (uncredited) |
| VVirginie Ullmann(uncredited) | (uncredited) |
