Ladj Ly (born 19 March 1980 in Paris) is a French film director and screenwriter. He won a Jury Prize in Cannes Film Festival for Les Misérables in 2019.

The film was nominated for the Academy Award for Best Foreign Film. Ly's parents are from Mali and he grew up in Montfermeil, a district of Bosquets. He started making films with his friends Kim Chapiron, Romain Gavras, and JR, in the collective Kourtrajmé.