 | Carroll Baker als Jean Harlow |
 | Red Buttons als Arthur Landau |
 | Raf Vallone als Marino Bello |
 | Angela Lansbury als Mama Jean Bello |
 | Peter Lawford als Paul Bern |
 | Mike Connors als Jack Harrison |
 | Martin Balsam als Everett Redman |
 | Leslie Nielsen als Richard Manley |
 | Mary Murphy als Sally Doane |
 | Hanna Landy als Beatrice Landau |
 | Peter Hansen als Hansen |
 | Kipp Hamilton als Marie Tanner |
 | Peter Leeds als Parker |
 | Billy Bletcher als Policeman |
 | Fritz Feld als Fritz |
 | Julie Parrish als Serena Harrison |
 | Dennis Cross als Second Director |
| Gordon Douglas | Director |
| John Michael Hayes | Screenplay |
| Joseph E. Levine | Producer |
| Neal Hefti | Original Music Composer |
| Joseph Ruttenberg | Director of Photography |
| Frank Bracht | Editor |
| Archie Marshek | Editor |
| Art Say | Still Photographer |
| Robert McCrellis | Props |
| Arthur M. Landau | Book |
| Irving Shulman | Book |
| Roland Anderson | Art Direction |
| Hal Pereira | Art Direction |
| James W. Payne | Set Decoration |
| Edith Head | Costume Design |
| Sydney Guilaroff | Hairstylist |
| Nellie Manley | Hairstylist |
| William Reynolds | Makeup Artist |
| Wally Westmore | Makeup Supervisor |
| Sherry Wilson | Hairstylist |
| C. Kenneth Deland | Production Manager |
| Clifford C. Coleman | Assistant Director |
| David Salven | Assistant Director |
| Tim Zinnemann | Assistant Director |
| Gene Lauritzen | Construction Coordinator |
| Ray Cossar | Sound Recordist |
| Frank Regula | Boom Operator |
| James Knott | Camera Operator |
| Gene Liggett | Assistant Camera |
| Irving Friedman | Music Supervisor |
| John C. Hammell | Music Editor |
| Maury Winetrobe | Music Editor |
