A Hollywood actor visits a mythical country where he looks like the king and confuses the queen.
| Actor | Role |
|---|---|
 Carl BrissonKing Rudolf XIV / Carlo Rocco | King Rudolf XIV / Carlo Rocco |
 Mary EllisElaine, the Queen of Langenstein | Elaine, the Queen of Langenstein |
 Edward Everett HortonCount Josef 'Peppi' von Schlapstaat | Count Josef 'Peppi' von Schlapstaat |
 Katherine DeMilleFraülein Mimi | Fraülein Mimi |
 Eugene PalletteConrad Q. Conley | Conrad Q. Conley |
 Arnold KorffBaron Kraemer, Lord Chamberlain | Baron Kraemer, Lord Chamberlain |
 Marina KoshetzSteffi | Steffi |
 RositaIlonka | Ilonka |
 Stanley AndrewsCount Batthy | Count Batthy |
 Jane WymanChorine on Train (uncredited) | Chorine on Train (uncredited) |
 Edwin MaxwellFirst Gentleman | First Gentleman |