The Lost Boys is a 1987 American teen horror film directed by Joel Schumacher, produced by Harvey Bernhard with a screenplay written by Jeffrey Boam. Janice Fischer and James Jeremias wrote the film's story. The film's ensemble cast includes Corey Haim, Jason Patric, Kiefer Sutherland, Jami Gertz, Corey Feldman, Dianne Wiest, Edward Herrmann, Billy Wirth, Brooke McCarter, Alex Winter, Jamison Newlander, and Barnard Hughes.

The title is a reference to the Lost Boys in J. M. Barrie's stories about Peter Pan and Neverland, who, like the vampires, never grow up. Most of the film was shot in Santa Cruz, California.

The Lost Boys was released and produced by Warner Bros. Pictures on July 31, 1987 and was a critical and commercial success, grossing over $32 million against a production budget of $8.5 million.

The success of the film has spawned a franchise with two sequels (Lost Boys: The Tribe and Lost Boys: The Thirst), two comic book series and a future television series.