The Temple of Set is an occult initiatory order founded in 1975. A new religious movement and form of Western esotericism, the Temple espouses a religion known as Setianism, whose practitioners are called Setians. This is sometimes identified as a form of Satanism, although this term is not often embraced by Setians and is contested by some academics.

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.