Louis Jourdan
as Gaston Lachaille
Maurice Chevalier
as Honore Lachaille
Hermione Gingold
as Madame Alvarez
Eva Gabor
as Liane d'Exelmans
Jacques Bergerac
as Sandomir
Isabel Jeans
as Aunt Alicia
John Abbott
as Manuel
Monique van Vooren
as Showgirl (uncredited)
Lydia Stevens
as Simone (uncredited)
Edwin Jerome
as Charles, the butler (uncredited)
Dorothy Neumann
as Designer (uncredited)