 | William Holden als Richard Benson / Rick |
 | Audrey Hepburn als Gabrielle Simpson / Baby |
 | Grégoire Aslan als Inspector Gilet |
 | Raymond Bussières als François |
 | Christian Duvaleix als Maitre d'Hotel |
 | Michel Thomass als Gangster |
 | Dominique Boschero als Girl at Pool |
 | Evi Marandi als Girt at Pool |
 | Noël Coward als Alexander Meyerheim |
 | Tony Curtis als Maurice / Philippe (uncredited) |
 | Marlene Dietrich als Marlene Dietrich (uncredited) |
 | Mel Ferrer als Dr. Jekyll & Mr. Hyde (uncredited) |
 | Henri Garcin als Policeman (uncredited) |
 | Dominique Zardi als Sailor in Café (uncredited) |
| Richard Quine | Director |
| Jean-André d'Eaubonne | Art Direction |
| Charles Lang | Director of Photography |
| George Axelrod | Screenplay |
| Hubert de Givenchy | Costume Design |
| George Axelrod | Producer |
| Frank McCoy | Makeup Artist |
| Henri Tiquet | Camera Operator |
| Paul Feyder | Assistant Director |
| Arthur Morton | Orchestrator |
| Jean Zay | Wardrobe Supervisor |
| Gabriel Béchir | Set Decoration |
| Joseph de Bretagne | Sound Recordist |
| Nelson Riddle | Original Music Composer |
| Henri Jeanson | Story |
| John R. Coonan | Associate Producer |
| Richard Quine | Producer |
| Paul K. Lerpae | Special Effects |
| Julien Duvivier | Story |
| Lew Spence | Songs |
| Carter DeHaven Jr. | Associate Producer |
| Dean Cole | Hairstylist |
| Archie Marshek | Editor |
| Charles Grenzbach | Sound Recordist |
| Fred Astaire | Vocals |
| Frank Sinatra | Vocals |
| Alan Bergman | Lyricist |
