The Auton trilogy is a series of direct-to-video spin-off productions based on the long running BBC science fiction series Doctor Who. The three films in the series are Auton (1997), Auton 2: Sentinel and Auton 3. They were produced by the independent BBV company and are sequels to the Third Doctor stories Spearhead from Space and Terror of the Autons. All three films have been reissued on DVD.

The Autons are an artificial life form from the British science fiction television series Doctor Who and adversaries of the Doctor. They were originally created by scriptwriter Robert Holmes for Jon Pertwee's first serial as the Doctor, Spearhead from Space (1970), and were the first monsters to be presented in colour on the series.