 | Alice Faye | ... | Molly Adair Hayden |
| Don Ameche | ... | Michael Linnett 'Mike' Connors |
| J. Edward Bromberg | ... | Dave Spingold |
| Alan Curtis | ... | Nicky Hayden |
| Stuart Erwin | ... | Pete Tinney, Michael's Cameraman |
| Jed Prouty | ... | Keystone Cop Police Chief |
| Buster Keaton | ... | Himself |
| Donald Meek | ... | Lyle P. Stout, Studio Chief |
| George Givot | ... | Claude, an Englishman in the Show |
| Al Jolson | ... | Himself (as Mr. Al Jolson) |
| Eddie Collins | ... | Keystone Cop Driver |
| Ben Turpin | ... | Bartender in Western |
| Chester Conklin | ... | Sheriff in Western |
| Hank Mann | ... | Keystone Cop |
| 'Snub' Pollard | ... | Keystone Cop (as Snub Pollard) |
| Heinie Conklin | ... | Keystone Cop |
| James Finlayson | ... | Keystone Cop |
| Chick Chandler | ... | Chick, Assistant Director |
| Robert Lowery | ... | Henry Potter in the Show |
| Russell Hicks | ... | Mr. Roberts, Movie Backer |
| Ben Welden | ... | Agent with Michael at Anniversary Party |
| Willie Fung | ... | Willie, Michael's Valet |
| Paul Stanton | ... | Filson (Credits) / Himself, an Actor |
| Mary Forbes | ... | Mrs. Gaynes in the Show |
| Joseph Crehan | ... | Bill, Mr. Thomas' Attorney |
| Irving Bacon | ... | Bakery Clerk |
| Marjorie Beebe | ... | Telephone Operator in Silent Film |
| Frederick Burton | ... | Mr. Thomas of Famous Players |
| Lee Duncan | ... | Himself - Rin Tin Tin's Owner |
| Rin Tin Tin Jr. | ... | Rin-Tin-Tin |
| rest of cast listed alphabetically: |
| Eddie Dunn | ... | (scenes deleted) |
| Herbert Ashley | ... | Gus, Diner Proprietor (uncredited) |
| Sam Ash | ... | Actor in 'Common Clay' (uncredited) |
| Bonnie Bannon | ... | Pretty girl (uncredited) |
| Lynn Bari | ... | Actress in 'The Man Who Came Back' (uncredited) |
| John Butler | ... | Telegraph Operator (uncredited) |
| Georgia Caine | ... | Reporter (uncredited) |
| Ray Cooke | ... | First Cab Driver (uncredited) |
| Jack Cooper | ... | Burglar (uncredited) |
| Dorothy Dearing | ... | Girl with Michael at Anniversary Party (uncredited) |
| Edward Earle | ... | Actor (uncredited) |
| Franklyn Farnum | ... | Well-Wisher (uncredited) |
| Arno Frey | ... | Maitre d'Hotel (uncredited) |
| Harold Goodwin | ... | Prop Boy (uncredited) |
| Fay Helm | ... | Nurse (uncredited) |
| J. Anthony Hughes | ... | Motorcycle Policeman (uncredited) |
| John Ince | ... | Actor as Court Officer (uncredited) |
| Mark Jones | ... | Keystone Kop (uncredited) |
| Paul McVey | ... | Stage Manager Announcing Understudy Will Perform (uncredited) |
| Dave Morris | ... | Stooge (uncredited) |
| Forbes Murray | ... | Criterion Theater Manager (uncredited) |
| Alexander Pollard | ... | Nicky's Butler (uncredited) |
| Victor Potel | ... | Slim, a Counterman (uncredited) |
| Arthur Rankin | ... | Assistant Cameraman (uncredited) |
| Cyril Ring | ... | First Row Extra in Theater Audience (uncredited) |
| Marshall Ruth | ... | Roscoe 'Fatty' Arbuckle (uncredited) |
| Francis Sayles | ... | Second Cab Driver (uncredited) |
| Mack Sennett | ... | Himself (uncredited) |
| Iva Stewart | ... | Girl with Michael at Anniversary Party (uncredited) |
| Fred 'Snowflake' Toones | ... | Train Porter (uncredited) |
| Harry Tyler | ... | Studio Guide (uncredited) |
| Billy Wayne | ... | Assistant Stage Manager (uncredited) |
