King Rudolf XIV / Carlo Rocco
Carl Brisson
Elaine, the Queen of Langenstein
Mary Ellis
First Gentleman
Edwin Maxwell
Count Josef 'Peppi' von Schlapstaat
Edward Everett Horton
Fraülein Mimi
Katherine DeMille
Conrad Q. Conley
Eugene Pallette
Baron Kraemer, Lord Chamberlain
Arnold Korff
Steffi
Marina Koshetz
Ilonka
Rosita
Count Batthy
Stanley Andrews
Chorine on Train (uncredited)
Jane Wyman
Director
Frank Tuttle
Screenplay
Frederick Stephani
Adaptation