Mae Murray
Sally O'Hara - The Merry Widow
John Gilbert
Prince Danilo Petrovich
Roy D'Arcy
Crown Prince Mirko
Josephine Crowell
Queen Milena
George Fawcett
King Nikita
Tully Marshall
Baron Sadoja
Edward Connelly
Ambassador
Joan Crawford
Ballroom Dancer (uncredited)
Sidney Bracey
Danilo's Footman (uncredited)
Albert Conti
Danilo's Adjutant (uncredited)
Xavier Cugat
Orchestra Leader (uncredited)
Dale Fuller
Sadoja's Chambermaid (uncredited)
Jacqueline Gadsden
Madonna (uncredited)
George Nichols
Doorkeeper (uncredited)
