Treasure Planet is a 2002 American animated science fiction action-adventure film produced by Walt Disney Feature Animation and released by Walt Disney Pictures. It is a science fiction adaptation of Robert Louis Stevenson's adventure novel Treasure Island (1883), and it is the third retelling of the story in an outer space setting, following the Bulgarian film Treasure Planet (1982) and the Italian miniseries Treasure Island in Outer Space (1987). It is the third Disney adaptation of the novel, following Treasure Island (1950) and Muppet Treasure Island (1996). In the film's setting, spaceships are powered by solar sails and resemble the 18th-century sailing vessels of the original Treasure Island.

The film was directed by John Musker and Ron Clements, both of whom also produced the film with Roy Conli, from a screenplay written by Clements, Musker, and Rob Edwards, and a story conceived by the directors and the writing team of Ted Elliott and Terry Rossio. The film features the voices of Joseph Gordon-Levitt, Brian Murray, David Hyde Pierce, Martin Short, Roscoe Lee Browne, Emma Thompson, Michael Wincott, Laurie Metcalf, and Patrick McGoohan in his final feature role. The musical score was composed by James Newton Howard, while some songs were written and performed by John Rzeznik. It marks Clements and Musker's first non-musical film since The Great Mouse Detective (1986). The duo pitched the concept for the film during production of another Disney animated feature they wrote and directed, The Little Mermaid (1989). After they finished their work on Hercules (1997), development of the film officially began. It employs a novel technique of hand-drawn 2D traditional animation set atop 3D computer animation. With a budget of $140 million, it is the most expensive traditionally animated film to date.

Treasure Planet premiered in Paris, France and the Cinerama Dome in Los Angeles on November 6 and 17, 2002, respectively, and received a wide theatrical release on November 27. It was the first film to be released simultaneously in regular and IMAX theaters. The film was a box-office failure, earning $109 million worldwide against a budget of $140 million, but received generally positive reviews from critics and audiences. It was nominated for Best Animated Feature at the 75th Academy Awards but lost to Spirited Away (2001). The film has gained a cult following.