Delirium (also known as Psycho Puppet) is a 1979 American thriller film directed by Peter Maris and written by Maris and Richard Yalem.

The film is one of the infamous "Video Nasties".

Delirium was released in July 1979 in the United States.

TV Guide's review was generally unfavourable, criticising the film's use of Vietnam War flashbacks to explain the killer's motivations.

This article about a 1970s thriller film is a stub.