Vivianne Crowley is an English writer, university lecturer, psychologist, and a High Priestess and teacher of the Wiccan religion.

Crowley was initiated into the London coven of Alex Sanders (founder of the Alexandrian tradition of Wicca) at the age of eighteen, but later joined a Gardnerian coven in the famous Whitecroft line derived from Eleanor Bone, and was one of few people in the seventies to be part of both traditions.

[citation needed] Crowley founded the Wicca Study Group in London in 1988,[1] and became secretary of the Pagan Federation the same year.

[2] Crowley was described as "very influential in recent developments in Wicca... She has more or less captained the bringing together of the Gardnerian and Alexandrian Traditions through the process of cross-initiation, where a person is initiated into both Traditions".

[1] Professor Ronald Hutton also described Crowley as "the closest thing that Britain possessed to an informal successor to Alex Sanders.