William Powell

Baron Stephan Wolensky

Luise Rainer

Countess Olga Mironova

Robert Young

Grand Duke Peter

Maureen O'Sullivan

Maria Orlich

Frank Morgan

Colonel Baron Suroff

Henry Stephenson

Prince Johann

Bernadene Hayes

Mitzi Reisenbach

Donald Kirke

Anton, the Thief

Douglass Dumbrille

Mr. Korum, a Conspirator

Charles Waldron

Dr. Malchor, a Conspirator

Ian Wolfe

Leon, a Conspirator

Barnett Parker

Albert, Stephan's Butler

Frank Reicher

Pavloff

Bert Roach

Hotel Clerk

Paul Porcasi

Santuzzi

E. E. Clive

Auctioneer

Emma Dunn

Anna - Olga's Housekeeper

Frank Conroy

Col. Radoff

George Davis

Waiter (uncredited)

Carole Landis

Bidder (uncredited)