 | Tony Curtis als George Wellington Tracy |
 | Debbie Reynolds als Charlie Sorel / Virginia Mason |
 | Pat Boone als Bruce Minton III |
 | Joanna Barnes als Janie Highland |
 | Ellen Burstyn als Franny Salzman |
 | Laura Devon als Rusty Sartori |
 | Martin Gabel als Morton Craft |
 | Roger C. Carmel als Inspector |
 | Harry Madden als Charles Sorel |
 | Myrna Hansen als Starlet |
 | Walter Matthau als Leo Sartori |
| Vincente Minnelli | Director |
| Milton Krasner | Director of Photography |
| John W. Holmes | Editor |
| André Previn | Original Music Composer |
| Helen Rose | Costume Design |
| Jack Martin Smith | Art Direction |
| Richard Day | Art Direction |
| Walter M. Scott | Set Decoration |
| F. Keogh Gleason | Set Decoration |
| L.B. Abbott | Special Effects |
| Emil Kosa Jr. | Special Effects |
| David Hall | Assistant Director |
| W. D. Flick | Sound |
| Elmer Raguse | Sound |
| Albert Woodbury | Orchestrator |
| Ben Nye | Makeup Artist |
| Margaret Donovan | Hair Supervisor |
| Sydney Guilaroff | Hair Designer |
| Harry Kurnitz | Screenplay |
| George Axelrod | Theatre Play |
| David Weisbart | Producer |
