Possible Worlds is a 2000 Canadian film adaptation of the 1990 play of the same name by John Mighton.

The film is directed by Robert Lepage, and stars Tom McCamus and Tilda Swinton. The film's musical score is by George Koller.

Mighton approached Lepage to direct an adaption of his play. Lepage, who had seen a tape of Daniel Brook's minimalistic 1998 production, agreed to the request. He liked Mighton's combining of art and science and the theme of diverse, multilayered identity.

The Australian film festival Possible Worlds, running since 2006, was named after the film.