Lon Milo DuQuette is an American writer, lecturer, musician, and occultist, best known as an author who applies humor in the field of Western Hermeticism. Since 1975 DuQuette has been a National and International governing officer of Ordo Templi Orientis, a religious and fraternal organization founded in the early part of the 20th century. Since 1996 he has been O.T.O.’s United States Deputy Grand Master. He is also an Archbishop of Ecclesia Gnostica Catholica, the ecclesiastical arm of O.T.O and the longest living member of the O.T.O after the death of Phyllis Seckler.