 Ramon NovarroArchduke Paul 'Gustl' Gustave | Archduke Paul 'Gustl' Gustave |
 Evelyn LayeElizabeth Katherine Anne 'Lisl' Gluck | Elizabeth Katherine Anne 'Lisl' Gluck |
 Charles ButterworthWilly Fitch | Willy Fitch |
 Una MerkelFanni Kerner | Fanni Kerner |
 Edward Everett HortonBaron Szereny | Baron Szereny |
 Donald CookToni Berngruber | Toni Berngruber |
 Henry StephensonEmperor Franz Josef | Emperor Franz Josef |
 Rosalind RussellCountess Zarika Rafay | Countess Zarika Rafay |
 Herman BingNepomuk | Nepomuk |
| FFlorine BaileUndetermined Role (uncredited) | Undetermined Role (uncredited) |
 Max BarwynMax - the Waiter (uncredited) | Max - the Waiter (uncredited) |
| AArt Berry Sr.Undetermined Role (uncredited) (unconfirmed) | Undetermined Role (uncredited) (unconfirmed) |
 Albert ContiMueller (uncredited) | Mueller (uncredited) |
 George DavisMilkman (uncredited) | Milkman (uncredited) |
| CCarlos De ValdezAdjutant (uncredited) | Adjutant (uncredited) |
| CChico De VerdiUndetermined Role (uncredited) (unconfirmed) | Undetermined Role (uncredited) (unconfirmed) |
 Billy DooleyCoronetist (uncredited) | Coronetist (uncredited) |
 Elspeth DudgeonDuchess of Reidheim (uncredited) | Duchess of Reidheim (uncredited) |
 Kay EnglishUndetermined Role (uncredited) | Undetermined Role (uncredited) |
 Charles JudelsRiccardi (uncredited) | Riccardi (uncredited) |
| EEdith KingdonDowager at Opera House (uncredited) | Dowager at Opera House (uncredited) |
 Michael MarkMessenger from Restaurant (uncredited) | Messenger from Restaurant (uncredited) |
 Torben MeyerAdjutant (uncredited) | Adjutant (uncredited) |
 Harry 'Snub' PollardDrummer (uncredited) | Drummer (uncredited) |
 Christian RubCafé Proprietor (uncredited) | Café Proprietor (uncredited) |
| CCharles UngerUndetermined Role (uncredited) | Undetermined Role (uncredited) |
 Gustav von SeyffertitzAmbassador (uncredited) | Ambassador (uncredited) |
