Prince Danilo falls in love with dancer Sally O'Hara. However, his uncle, King Nikita I of Monteblanco, forbids the marriage due to her being a commoner. Thinking she's been jilted by her prince, Sally marries lecherous old Baron Sadoja, whose wealth has kept the kingdom afloat. When he suddenly dies, Sally must be wooed all over again by Danilo.
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)
