Shrek is a 2001 American computer-animated fantasy-comedy film produced by PDI/DreamWorks, released by DreamWorks Pictures, directed by Andrew Adamson and Vicky Jenson, featuring the voices of Mike Myers, Eddie Murphy, Cameron Diaz, and John Lithgow. It is loosely based on William Steig's 1990 fairy tale picture book Shrek!, and somewhat serves as a parody film, targeting other films adapted from numerous children's fantasies (mainly animated Disney films). The film's includes music by Smash Mouth, Eels, Joan Jett, The Proclaimers, Jason Wade, Baha Men, and John Cale (covering Leonard Cohen).

Shrek! is a picture book written and illustrated in 1990, by William Steig about a repugnant and monstrous ogre who leaves home to see the world and ends up saving a princess. The name "Shrek" is derived from the Yiddish and German Schreck (Yiddish שרעק) meaning "fear" or "fright". The book served as the basis for the popular Shrek film series over a decade after its publication.