Fabrice Luchini as Arthur Dreyfus

Patrick Bruel as César Montesiho

Zineb Triki as Randa Ameziane

Pascale Arbillot as Virginia, Arthur's ex

Marie Narbonne as Julie Dreyfus, daughter of Arthur and Virginie

Jean-Marie Winling as Bernard Montesiho, father of César

André Marcon as The priest

Thierry Godard as Doctor Cerceau

Martina García as Lucia

Sébastien Pierre as Maître Lansky

Philippe Résimont as Codaven, director of the laboratory

Rajat Kapoor as Doctor Aman Kapoor

Marie-Julie Baup as Biker girl with the cigarette

Yilin Yang as Chinese waitress

Adèle Simphal as Student

Lilou Fogli as Emergency room employee

Guillaume Clérice as Maître d'hôtel

Laurent Dassault as Researcher

Maud Le Guenedal as Hospital nurse

Jocelyne Vignon as Assistant

Christian Valsamidis as The abbot

Celia Diane as Hostess at the airport

Rafaël Rajabian as Arthur as a child

Théo Hellermann as Man on the street (uncredited)

Josiane Combescure as Friend at the funeral (uncredited)