 | Jerry Lewis als Willard Woodward / James Peyton / Everett Peyton / Julius Peyton / Eddie Peyton / Skylock Peyton / Bugs Peyton |
 | Donna Butterworth als Donna Peyton |
 | Sebastian Cabot als Dr. Matson |
 | Neil Hamilton als Attorney |
 | Jay Adler als Attorney |
 | Anne Baxter als Anne Baxter |
 | Robert Strauss als Pool Player |
 | Jesslyn Fax als Airline Passenger |
 | Renie Riano als Airline Passenger |
 | Herbie Faye als Joe |
 | Norman Leavitt als Gas Station Attendant |
 | Ellen Corby als Airline Passenger |
 | Marjorie Bennett als Airline Passenger |
 | Vince Barnett als Automobile Owner at Gas Station |
 | Milton Frome als Pilot |
 | John Hubbard als Pilot |
 | Benny Rubin als Sign Painter |
 | Gerald Mohr als Movie Actor |
 | Gene Baylos als Clown |
| Jerry Lewis | Director |
| Jerry Lewis | Writer |
| Bill Richmond | Writer |
| Ralph Axness | Assistant Director |
| Edith Head | Costume Design |
| W. Wallace Kelley | Director of Photography |
| Sy Devore | Wardrobe Designer |
| Howard Beals | Sound Effects Editor |
| Hal Pereira | Art Direction |
| Sam Comer | Set Decoration |
| John L. Jensen | Title Designer |
| Charles Grenzbach | Sound Recordist |
| Hugo Grenzbach | Sound Recordist |
| Wally Westmore | Makeup Supervisor |
| Russel Wiles | Assistant Editor |
| Jerry Lewis | Producer |
| Pete King | Original Music Composer |
| Nellie Manley | Hair Supervisor |
| Marvin Weldon | Dialogue Coach |
| Paul K. Lerpae | Special Effects |
| Jack Poplin | Art Direction |
| Betty Fancher | Script Supervisor |
| Robert R. Benton | Set Decoration |
| Paul Haggar | Music Editor |
| Arthur P. Schmidt | Associate Producer |
| John Woodcock | Editor |
| William Davidson | Production Manager |
