Fun is a 1994 Canadian independent drama film starring Alicia Witt and Renée Humphrey, and directed by Rafal Zielinski. The film centers on the murder of an elderly woman by two mentally unstable girls. Both Witt and Humphrey won a Special Jury Recognition award at the 1994 Sundance Film Festival.

The film is based on a play by James Bosley, which was in turn based on an actual murder that was committed in Auburn, California in 1983 by 14-year-old Shirley Wolf and 15-year-old Cindy Collier. The film's title is derived from a diary entry by Wolf, which read: "Today, Cindy and I ran away and killed an old lady. It was lots of fun."

The film is told in flashbacks detailing the girls' relationship (in color), and their time in juvenile detention center (in black and white).