 | Groucho Marx als Sam Grunion |
 | Harpo Marx als Harpo |
 | Chico Marx als Faustino the Great |
 | Ilona Massey als Madame Egelichi |
 | Vera-Ellen als Maggie Phillips |
 | Marion Hutton als Bunny Dolan |
 | Raymond Burr als Alphonse Zoto |
 | Melville Cooper als Lefty Throckmorton |
 | Paul Valentine als Mike Johnson |
 | Bruce Gordon als Hannibal Zoto |
 | Marilyn Monroe als Grunion's Client |
 | Leon Belasco als Mr. Lyons |
 | Eric Blore als Mackinaw |
 | Otto Waldis als Ivan (uncredited) |
| David Miller | Director |
| Albrecht Joseph | Editor |
| Lester Cowan | Producer |
| Basil Wrangell | Editor |
| Mac Benoff | Screenplay |
| Frank Tashlin | Screenplay |
| Harpo Marx | Story |
| William C. Mellor | Director of Photography |
| Mary Pickford | Executive Producer |
| Ben Hecht | Additional Writing |
| Gabriel Scognamillo | Art Direction |
| Billy Daniel | Choreographer |
| Ann Ronell | Original Music Composer |
| Ray Heinz | Production Manager |
| Harry Geller | Orchestrator |
| Howard A. Anderson | Visual Effects |
| Grace Houston | Costume Design |
| Norma Koch | Costume Design |
| Richard Bachler | Wardrobe Supervisor |
| Fred B. Phillips | Makeup Artist |
| Scotty Rackin | Hairstylist |
| Casey Roberts | Set Decoration |
