This Boy's Life (titled onscreen as This Boy's Life: A True Story) is a 1993 American biographical coming-of-age drama film directed by Michael Caton-Jones. It is based on the eponymous memoir by author Tobias Wolff. The film stars Leonardo DiCaprio (in his theatrical film debut), Robert De Niro, and Ellen Barkin. The cast also features Chris Cooper, and Carla Gugino, Eliza Dushku, as well as Tobey Maguire's first credited appearance in a feature-length film.

It was the first collaboration on-screen between Maguire and DiCaprio, who both later worked in Don's Plum (2001) and The Great Gatsby (2013), and also the first collaboration on-screen between DiCaprio and De Niro, who both later worked in Marvin's Room (1996), the short film The Audition (2015), and Killers of the Flower Moon (2023).