Anton Szandor LaVey was an American author, musician, and Satanist. He was the founder of the Church of Satan and the religion of Satanism. He authored several books, including The Satanic Bible, The Satanic Rituals, The Satanic Witch, The Devil's Notebook, and Satan Speaks! In addition, he released three albums, including The Satanic Mass, Satan Takes a Holiday, and Strange Music. He played a minor on-screen role and served as technical advisor for the 1975 film The Devil's Rain and served as host and narrator for Nick Bougas' 1989 mondo film Death Scenes.

Satanism refers to a group of religious, ideological, and/or philosophical beliefs based on Satan – particularly his worship or veneration. Satan is commonly associated with the Devil in Christianity, a fallen angel often regarded as chief of the demons who tempt humans into sin. The phenomenon of Satanism shares "historical connections and family resemblances" with the Left Hand Path milieu of other occult figures such as Chaos, Hecate, Lilith, Lucifer, and Set. For centuries, the term was used by various Christian groups as an accusation against ideological opponents, a slur for assorted heretics, freethinkers, and pagans. By contrast, self-identified Satanism is a relatively modern phenomenon, largely attributed to the 1966 founding of the Church of Satan by Anton LaVey in the United States – an atheistic group that does not believe in a supernatural Satan.