The title role in the French comedy-fantasy A Martian in Paris is filled by Darry Cowl. The higher-ups in Mars want to learn all about that strange commodity, peculiar to the planet Earth, known as "Love". Darry soon figures out what makes the world go 'round when he meets the gorgeous Nicole Mirel. A Martian in Paris was obviously inspired by the 1960 American comedy A Visit to a Small Planet, which starred Jerry Lewis. Darry Cowl's imitation of Lewis is passable, but it certainly didn't fool the "Le Roi Crazy Jerry" idolators at Cahiers du Cinema and Positif magazine.
| Actor | Role |
|---|---|
 Darry CowlPierre Dubois | Pierre Dubois |
 Nicole MirelLiliane | Liliane |
 Henri VilbertMonsieur Walter | Monsieur Walter |
 Gisèle GrandpréMadame Walter | Madame Walter |
| RRolande KalisLorène | Lorène |
| MMichèle VerezThe girl of Saint-Germain | The girl of Saint-Germain |
 Pierre-LouisThe reporter | The reporter |
| RRobert EddieNot listed | Not listed |
 Serge BerryNot listed | Not listed |
| PPierre VernotNot listed | Not listed |
| DDany BerthierNot listed | Not listed |
| RRené CharlesNot listed | Not listed |
| JJacques De LeonNot listed | Not listed |
 Michel Bardinet(uncredited) | (uncredited) |
 Pierre DuncanAn inspector (uncredited) | An inspector (uncredited) |
 Jean FranvalAn inspector (uncredited) | An inspector (uncredited) |
 René HellThe traveling pencil merchant (uncredited) | The traveling pencil merchant (uncredited) |
 Robert Le BéalThe Commissioner of Police (uncredited) | The Commissioner of Police (uncredited) |
 Laure PailletteA lady at the police station (uncredited) | A lady at the police station (uncredited) |
| GGuy Saint-Clair(uncredited) | (uncredited) |