| Whit Bissell | Dr. Stauffer |
| Ronald Colman | Anthony John |
| Betsy Blair | Girl in Wig Shop |
| Signe Hasso | Brita |
| David Bond | ["othello" Sequence] |
| Edmond O'Brien | Bill Friend |
| Harlan Briggs | Oscar Bemard |
| Shelley Winters | Pat Kroll |
| Georgia Caine | [A Gentleman's Gentleman Sequence] |
| Ray Collins | Victor Donlan |
| Claire Carleton | Waitress |
| Philip Loeb | Max Lasker |
| John Drew Colt | Stage Manager |
| Leslie Denison | ["othello" Sequence] |
| Elizabeth Dunne | Gladys |
| Alan Edmiston | Rex |
| Arthur E. Gould-Porter | David Bond ["othello" Sequence] |
| Wilton Graff | Dr. Mervin |
| Boyd Irwin | Virginia Patton ["othello" Sequence] |
| Fay Kanin | Guy Bates Post ["othello" Sequence] |
| Charles La Torre | Stellini |
| Millard Mitchell | Al Cooley |
| Virginia Patton | ["othello" Sequence] |
| Guy Bates Post | ["othello" Sequence] |
| Elliott Reid | [A Gentleman's Gentleman Sequence] |
| Thayer Roberts | ["othello" Sequence] |
| Joe Sawyer | Pete Bonner |
| Art Smith | Wigmaker |
| Peter Thompson | Assistant Stage Manager |
| Sid Tomack | Wigmaker |
| Percival Vivian | Thayer Roberts/Georgia Caine ["othello" Sequence] |
| Janet Warren | Girl in Wigshop |
| Marjorie Woodworth | Girls in Wig Shop |
| Frederic Worlock | Leslie Denison ["othello" sequence] |
| Mary Young | Elliott Teid [A Gentleman's Gentleman Sequence] |
| William Norton Bailey | Actor |
| Joe Bernard | Husband |
| Laura Brooks | Dowager |
| Leander de Cordova | Actor |
| George Douglas | Actor |
| Watson Downs | Bootmaker |
| Beatrice Gray | Actor |
| Fred Hoose | Laughing Man |
| Robert Emmett Keane | 2nd Photographer |
| Elmo Lincoln | Detective |
| Carl Milletaire | Customer |
| Howard Mitchell | Tailor |
| John Morgan | Actor |
| Albert Pollet | Costume Designer |
| Buddy Roosevelt | Fingerprint Man |
| Jamesson Shade | Actor |
| Diane Stewart | Actor |
| Mike Stokey | Actor |
| Mary Worth | Woman in Audience |
| Nina Gilbert | Woman |
| Bruce Riley | Actor |
| Wayne Treadway | Men at Party |
| Pete Sosso | Tailor |
| Kay Lavelle | Large Woman |
| Alexander Clark | Barry |
| Reginald Billado | Reporter |
| Cedric Stevens | Actor |
| Don McGill | Man at Party |
| Elektra Rozanska | Actor |
| Katherine Marlowe | Actor |
| Doretta Johnson | Actor |
| Curt Conway | Reporter |
| Sarah Selby | Anna |
| Harry Bannister | 2nd Actor |
| Joann Dolan | Ellen |
| Joyce Mathews | Janet |
| Nick Dennis | Stagehand |
| Barry Macollum | Stagehand |
| Angela Clarke | Lucy |
| Paddy Chayefsky | Photographer [uncredited] |
| Russ Conway | Reporter |
| Fernanda Eliscu | Landlady |
| Joey Ray | Boyer |
| Charles Jordan | Bartender |
| Walter McGrail | Steve |
| Hazel Keener | Woman |
| Ethel May Halls | Woman |
| Maude Fealy | Woman |
| Harry Hays Morgan | Guest |
| George Sherwood | Guest |
| John Derek | Police Stenographer |
| Frank Richards | Stagehand |
Technical Credits
| George Cukor | Director |
| John P. Austin | Set Decoration/Design |
| Travis Banton | Costumes/Costume Designer |
| Russell A. Gausman | Set Decoration/Design |
| Harvey T. Gillett | Art Director |
| Ruth Gordon | Screenwriter |
| Bernard Herzbrun | Art Director |
| Harry Horner | Production Designer |
| David S. Horsley | Special Effects |
| Garson Kanin | Screenwriter |
| Michael Kanin | Producer |
| Milton Krasner | Cinematographer |
| Robert Parrish | Editor |
| Miklós Rózsa | Score Composer |
| Bud Westmore | Makeup |
| Yvonne Wood | Costumes/Costume Designer |
