The Equinox is a periodical that serves as the official organ of the A∴A∴, a magical order founded by Aleister Crowley. Begun in 1909, it mainly features articles about occultism and magick, while several issues also contained poetry, fiction, plays, artwork, and biographies. The most recent issue was published in 1998.

Aleister Crowley was an English occultist, philosopher, ceremonial magician, poet, painter, novelist and mountaineer. He founded the religion of Thelema, identifying himself as the prophet entrusted with guiding humanity into the Æon of Horus in the early 20th century. A prolific writer, he published widely over the course of his life.