| George Gobel | Marshall 'Mickey' Briggs |
| Diana Dors | Janice Blake Briggs / Miss Luxembourg |
| Adolphe Menjou | Frederick W. Sutton |
| Jessie Royce Landis | Mrs. Blake, Janice's Mother |
| Nita Talbot | Miss Anderson, Briggs' Secretary |
| William Redfield | Eddie Benson, Elevator Operator |
| Stephen Dunne | Bob Sanders |
| John McGiver | Girard, Sutton's Lawyer |
| Angie Dickinson | Screen Wife |
| Stanley Adams | Cabbie (uncredited) |
| Suzanne Alexander | Camera Girl (uncredited) |
| Suzanne Ames | Luxembourg Girl (uncredited) |
| Kay Buckley | Camera Girl (uncredited) |
| Jeanne Carmen | Camera Girl (uncredited) |
| Harry Cheshire | Texan at Phone Booth (uncredited) |
| John C. Daly | Young Law Clerk (uncredited) |
| Joan Dixon | Mrs. John Wayne (uncredited) |
| Bess Flowers | Pageant Woman (uncredited) |
| Paul Gary | Doorman (uncredited) |
| Louise Glenn | Camera Girl (uncredited) |
| Greg Gobel | Young Ship Passenger (uncredited) |
| Richard Grant | Photographer (uncredited) |
| Marilyn Hanold | Luxembourg Girl (uncredited) |
| Marie Harmon | Bridesmaid (uncredited) |
| Sam Harris | Nightclub Extra (uncredited) |
| Don C. Harvey | Announcer (uncredited) |
| Kenner G. Kemp | Nightclub Extra (uncredited) |
| Sam Lee | Elevator Repairman (uncredited) |
| Lou Lubin | Tailor (uncredited) |
| Sidney Marion | Waiter (uncredited) |
| Ann McCrea | Luxembourg Girl (uncredited) |
| Cheerio Meredith | Mrs. Wilkins, Woman on Elevator (uncredited) |
| Gloria Moreland | Miss Fredericks (uncredited) |
| Mary Morlas | Bridesmaid (uncredited) |
| Jack Mulhall | Old Cop (uncredited) |
| Steve Pendleton | Photographer (uncredited) |
| Jack Pepper | Crawford (uncredited) |
| Joe Ploski | Nightclub Extra (uncredited) |
| Mabel Rea | Camera Girl (uncredited) |
| Dick Ryan | Official (uncredited) |
| Al Shaw | TV Repairman (uncredited) |
| Charles Tannen | Young Cop (uncredited) |
| Julius Tannen | Tim Smith, Sutton Advertising (uncredited) |
| John Wayne | Leonard / John Wayne (uncredited) |