Patrick Bateman is a fictional character created by novelist Bret Easton Ellis. He is the villain protagonist and unreliable narrator of Ellis's 1991 novel American Psycho and is portrayed by Christian Bale in the 2000 film adaptation of the same name.

Bateman is a wealthy and materialistic yuppie and Wall Street investment banker who, supposedly, leads a secret life as a serial killer. He has also briefly appeared in other Ellis novels and their film and theatrical adaptations.