 | Jack Lemmon als Stanley Ford |
 | Virna Lisi als Mrs. Ford |
 | Terry-Thomas als Charles |
 | Eddie Mayehoff als Harold Lampson |
 | Claire Trevor als Edna |
 | Sidney Blackmer als Judge Blackstone |
 | Max Showalter als Tobey Rawlins |
 | Jack Albertson als Dr. Bentley |
 | Mary Wickes als Harold's Secretary |
 | Alan Hewitt als District Attorney |
 | Barry Kelley als Club Member |
 | William Bryant als Club Member |
 | Charles Bateman als Club Member |
 | Edward Faulkner als Club Member |
 | Lauren Gilbert als Men's Club Manager |
 | Howard Wendell als The Trial Judge |
 | Khigh Dhiegh als Bald Actor Playing Thug |
| K.C. Townsend als Party Girl |
 | Tom Palmer als Club Member |
| Richard Quine | Director |
| George Axelrod | Writer |
| George Axelrod | Producer |
| Neal Hefti | Original Music Composer |
| Harry Stradling Sr. | Director of Photography |
| David Wages | Editor |
| Fred Williams | Makeup Artist |
| Gordon Carroll | Executive Producer |
| Kerwin Coughlin | Casting |
| Richard Sylbert | Production Design |
| William Kiernan | Set Decoration |
| Moss Mabry | Costume Design |
| Harry Ray | Makeup Artist |
| Peggy Shannon | Hairstylist |
| Jack Fier | Production Supervisor |
| Carter DeHaven Jr. | Assistant Director |
| Angelo Laiacona | First Assistant Director |
| Jack Carter | Property Master |
| Philip M. Jefferies | Assistant Art Director |
| Gene Lauritzen | Construction Coordinator |
| Geza Gaspar | Special Effects |
| Lucky Kargo | Stunts |
| Lyle Figland | Sound |
| James Nelson | Sound Effects Editor |
| J.S. Westmoreland | Sound |
| Wally Meinardus | Camera Operator |
| Alan Stetson | Electrician |
| Douglas Kirkland | Still Photographer |
| Izzy Berne | Wardrobe Supervisor |
| Marie Osborne | Wardrobe Supervisor |
| John C. Hammell | Music Editor |
| Esther Stephenson | Script Supervisor |
| Robert Sidney | Choreographer |
| Benno Schneider | Dialogue Coach |
