 Madeleine SologneFrançoise Monier, aeronaut | Françoise Monier, aeronaut |
 Jean MarchatRobert Monier, Françoise's husband | Robert Monier, Françoise's husband |
 Julien CaretteLucien Marchand, laboratory boy | Lucien Marchand, laboratory boy |
 Paul FrankeurFirst smooth-talker | First smooth-talker |
 Robert ArnouxBanker Antoine | Banker Antoine |
| SSimone AllainBéatrice | Béatrice |
 Auguste BovérioDirector | Director |
| VViolette BrietMarie | Marie |
 Jean DastéPépin | Pépin |
| LLuce FerraldGaby | Gaby |
 Richard FrancœurCharles | Charles |
| TTony JacquotYoung bridegroom | Young bridegroom |
 Georges JaminGustave | Gustave |
 Guita KarenVenusian | Venusian |
| SSerge LarochePhilippe | Philippe |
| HHubert de MaletVenusian | Venusian |
 Marcel MaupiPoliceman | Policeman |
 Jean MorelCommander | Commander |
 Philippe OliveSecond smooth-talker | Second smooth-talker |
 Paul OllivierUncle | Uncle |
 Suzanne DantèsCamille | Camille |
| SSuzanne DehellyGeorgette Marchand | Georgette Marchand |
 BourvilScientist | Scientist |
 Alfred AdamDecorator (uncredited) | Decorator (uncredited) |
 Erno CrisaMan on the Merry-Go-Round (uncredited) | Man on the Merry-Go-Round (uncredited) |
 Joé Davray(uncredited) | (uncredited) |
 Lucien DesagneauxMan at the sidereal station (uncredited) | Man at the sidereal station (uncredited) |
 Jacques DufilhoLumberjack (uncredited) | Lumberjack (uncredited) |
 Pierre FervalDoorman of the scientific institute (uncredited) | Doorman of the scientific institute (uncredited) |
 Géo ForsterMan at the sidereal station (uncredited) | Man at the sidereal station (uncredited) |
