Rosalie

Nelson Eddy

Dick Thorpe

Eleanor Powell

Princess Rosalie Romanikov

Frank Morgan

King Fredrick Romanikov

Edna May Oliver

Queen of Romanza

Ray Bolger

Bill Delroy

Ilona Massey

Brenda

Billy Gilbert

Oloff

Reginald Owen

Chancellor

Tom Rutherford

Prince Paul

Clay Clement

Captain Banner

Virginia Grey

Mary Callahan

George Zucco

General Maroff

Oscar O'Shea

Mr. Callahan

Jerry Colonna

Joseph

Janet Beecher

Miss Baker

William Demarest

Army Coach

Kay Aldridge

Lady in Waiting (uncredited)

Roy Barcroft

Conspirator (uncredited)