Leslie Caron
Gilberte "Gigi"

Maurice Chevalier
Honoré Lachaille

Louis Jourdan
Gaston Lachaille

Hermione Gingold
Madame Alvarez ("Mamita")

Eva Gabor
Liane d'Exelmans

Jacques Bergerac
Sandomir

Isabel Jeans
Aunt Alicia

John Abbott
Manuel

Corinne Marchand
Young Lady with White Sunshade

Marie-Hélène Arnaud
Girl at Maxim's

Anne-Marie Mersen
Maxim Girl

Jack Ary
Waiter at "Palais de Glace" (uncredited)

Daniel Aubé
A boy at Jardins des Tuileries (uncredited)

Richard Bean
Harlequin (uncredited)

Jacques Bertrand
Maitre d'Hotel Maxim's (uncredited)

Paul Cristo
Restaurant Patron (uncredited)

Hubert de Lapparent
Gaston's Private Secretary (uncredited)

Cilly Feindt
Girl on Horseback at Pré Catelan (uncredited)

Edwin Jerome
Charles - Alicia's Butler (uncredited)

Maurice Marsac
Prince Berensky (uncredited)