Satan's Slave is a 1976 British supernatural horror film directed by Norman J. Warren, written by David McGillivray, and starring Candace Glendenning, Michael Gough, Martin Potter, and Barbara Kellerman. Its plot follows a young woman who, after surviving a car accident that kills her parents, stays in the remote estate of her uncle and cousin, unaware that they are both necromancers who intend to sacrifice her to resurrect the spirit of a supernaturally-gifted ancestor.

The film, a production of Warren's newly formed company Monumental Pictures, was funded by producers Les Young and Richard Crafter with their own money and shot almost entirely on location in Pirbright, Surrey and Shepherd's Bush, London in late 1975. The following year, re-shoots were undertaken to film additional material and more violent, alternative versions of existing scenes with the aim of increasing the film's appeal to audiences in the Far East.

In the UK, Satan's Slave was originally released as a B movie. Critical reaction to the film has been mixed, with aspects such as the acting, script and plot drawing a variety of responses.