American Pie is a 1999 teen sex comedy film directed by Paul and Chris Weitz, and written by Adam Herz. It was the first film to be directed by the Weitz brothers, and the first film in the American Pie series. The film was a box-office hit and spawned two direct sequels: American Pie 2 (2001) and American Wedding (2003).

The film concentrates on four boys who make a pact to lose their virginity before their high school graduation. The title of the film refers to a scene in the film in which the lead character is caught masturbating with a pie after previously being told that third base feels "like warm apple pie".