John Starr Cooke (March 1920 – August 21, 1976) was an American mystic and spiritual teacher who influenced the development of the counterculture movement that emerged in San Francisco during 1966–1967. His teachings were based on the doctrine of “One Consciousness”, which Cooke believed was communicated to him through a Ouija board in the early 1960s. He designed three original decks of Tarot cards: T: The New Tarot for the Aquarian Age (1967, 1992), the Atlantean Tarot (1992), and the Medieval Tarot (1992).