 Ray MillandStanford White | Stanford White |
 Joan CollinsEvelyn Nesbit Thaw | Evelyn Nesbit Thaw |
 Farley GrangerHarry Kendall Thaw | Harry Kendall Thaw |
 Luther AdlerDelphin Delmas | Delphin Delmas |
 Cornelia Otis SkinnerMrs. Thaw | Mrs. Thaw |
 Glenda FarrellMrs. Nesbit | Mrs. Nesbit |
 Frances FullerMrs. Elizabeth White | Mrs. Elizabeth White |
 Phillip ReedRobert Collier | Robert Collier |
 Gale RobbinsGwen Arden | Gwen Arden |
| JJames LorimerMcCaleb | McCaleb |
 John HoytWilliam Travers Jerome | William Travers Jerome |
 Robert F. SimonStage Manager (as Robert Simon) | Stage Manager (as Robert Simon) |
 Harvey StephensDr. Hollingshead DDS | Dr. Hollingshead DDS |
 Emile MeyerHunchbacher | Hunchbacher |
 Henry KulkyPrisoner (uncredited) | Prisoner (uncredited) |
 Richard TravisCharles Dana Gibson (uncredited) | Charles Dana Gibson (uncredited) |
 Edna HollandSales Clerk at Lord & Taylor (uncredited) | Sales Clerk at Lord & Taylor (uncredited) |
 Suzanne AlexanderFloradora Girl (uncredited) | Floradora Girl (uncredited) |
| HHelen Van TuylMrs. Jennings (uncredited) | Mrs. Jennings (uncredited) |
| GGordon CarvethJuror (uncredited) | Juror (uncredited) |
 Edith EvansonJosie (uncredited) | Josie (uncredited) |
 William ForrestSimpson (uncredited) | Simpson (uncredited) |
 Kit GuardBackstage Policeman (uncredited) | Backstage Policeman (uncredited) |
 Ruta LeeTennis Girl (uncredited) | Tennis Girl (uncredited) |
 Ainslie PryorSport Donnelly (uncredited) | Sport Donnelly (uncredited) |
 Ivan TriesaultLudwig (uncredited) | Ludwig (uncredited) |
| AArt FelixWaiter (uncredited) | Waiter (uncredited) |
| DDiane DuBoisFloradora Girl (uncredited) | Floradora Girl (uncredited) |
 Raymond BaileyJudge Fitzgerald (uncredited) | Judge Fitzgerald (uncredited) |
 Robert AdlerDriver (uncredited) | Driver (uncredited) |
