Lost Illusions is a 2021 French drama film directed by Xavier Giannoli, from a screenplay by Giannoli and Jacques Fieschi, based upon the first two parts of Illusions perdues (1837–43) by Honoré de Balzac. It stars Benjamin Voisin, Xavier Dolan, Vincent Lacoste, Cécile de France, Gérard Depardieu, and Jeanne Balibar.
