Mary Reilly is a 1996 American gothic horror film directed by Stephen Frears and starring Julia Roberts and John Malkovich. It was written by Christopher Hampton and adapted from the 1990 novel of the same name by Valerie Martin (itself inspired by Robert Louis Stevenson's 1886 novella Strange Case of Dr Jekyll and Mr Hyde).

It reunited director Frears, screenwriter Hampton, and actors Malkovich and Glenn Close, who were involved in the Oscar-winning Dangerous Liaisons (1988).

Mary Reilly was theatrically released by TriStar Pictures on February 23, 1996 to poor reviews. It was a box office bomb, making just $12 million against its $47 million budget.