Carl Brisson

King Rudolf XIV / Carlo Rocco

Mary Ellis

Elaine, the Queen of Langenstein

Edward Everett Horton

Count Josef 'Peppi' von Schlapstaat

Katherine DeMille

Fraülein Mimi

Eugene Pallette

Conrad Q. Conley

Arnold Korff

Baron Kraemer, Lord Chamberlain

Marina Koshetz

Steffi

Rosita

Ilonka

Stanley Andrews

Count Batthy

Jane Wyman

Chorine on Train (uncredited)

Edwin Maxwell

First Gentleman