Eleanor Boardman
— Thyra, Princess of Svendborg
Conrad Nagel
— Harry Vane, Duke of Chevenix
Edward Connelly
— King of Chekia
Arthur Edmund Carewe
— Gigberto
Louis Payne
— Lord Charles Vane
Vera Lewis
— Princess Erek
Carrie Clark Ward
— Princess Anne
Constance Wylie
— Countess Arline
Dale Fuller
— Governess
Ned Sparks
— Gibson
Mario Carillo
— Prime Minister
David Mir
— Kaylkur
Mary Hawes
— Thyra's Maid
Michael Pleschkoff
— Captain of the Guards
Joan Crawford
— Party Guest (uncredited)
Tom Tyler
— Party Guest (uncredited)