Kenneth Grant (23 May 1924 – 15 January 2011) was an English ceremonial magician and prominent advocate of the Thelemite religion. A poet, novelist, and writer, he founded his own Thelemite organisation, the Typhonian Ordo Templi Orientis—later renamed the Typhonian Order—with his wife Steffi Grant.Grant's Order became known as the Typhonian Ordo Templi Orientis, operating from his home in Golders Green, north London. In 1959 he began publishing on occultism and wrote the Typhonian Trilogies as well as various novels and books of poetry, much of which propagated the work of Crowley and Spare.
Grant's writings and teachings have proved a significant influence over other currents of occultism, including chaos magic, the Temple of Set and the Dragon Rouge. They also attracted academic interest within the study of Western esotericism, particularly from Henrik Bogdan and Dave Evans.