The Lost Daughter is a 2021 psychological drama film written and directed by Maggie Gyllenhaal (in her feature directorial debut), based on the novel of the same name by Elena Ferrante. The film stars Olivia Colman, Dakota Johnson, Jessie Buckley, Paul Mescal, Dagmara Domińczyk, Oliver Jackson-Cohen, Peter Sarsgaard, and Ed Harris. It had its world premiere at the 78th Venice International Film Festival on September 3, 2021, where Gyllenhaal won the Golden Osella Award for Best Screenplay. It was released in the United States on December 17, 2021, in a limited release prior to streaming on Netflix on December 31. The film received acclaim from critics.