Charles Berling as Romain Gary

Miranda Raison as Jean Seberg

Claire de la Rüe du Can as Adèle

Pierre Perrier as Paul Pavlowitch

Anne Charrier as Gisèle Halimi

Gaspard Meier-Chaurand as Sergueï

Scali Delpeyrat as Professeur Meyer

Philippine Delaire as Martine

Arthur Rémi as Rémy

Clément Moreau as Le libraire

Dominique Bastien as Patron du Lipp