J. Christian Greer, PhD, is a scholar of Religious Studies with a special focus on psychedelic cultures across space and time. He has held teaching positions at Harvard University, Yale University, and is currently a lecturer at Stanford University Medical School. He is the co-founder, and co-chair of the Drugs and Religion program unit at the American Academy of Religion, and each June, he leads “The Psychedelic Universe: Global Perspectives on Higher Consciousness,” an intensive, 2-week seminar on the history of psychedelics, hosted on-location at the University of Amsterdam, Netherlands.

His latest books include Void Machines: the Paper Shrines of J. Christian Greer, a collection of his esoteric artworks, and Kumano Kodo: Pilgrimage to Powerspots (co-authored with Dr. Michelle Oing) which analyzes the pilgrimage folklore associated with the rainforests of Japan's Kii Peninsula. His forthcoming book, Angelheaded Hipsters: Psychedelic Militancy in Nineteen Eighties North America (Oxford University Press), explores the expansion of psychedelic culture within fanzine networks in the late Cold War era.

Aside from his scholarly research, Christian is an avid pilgrimage enthusiast and is currently the director of a pilgrimage confraternity, The Order of St George's Horse.