Harold Vinson Synan (December 1, 1934 – March 15, 2020) was an American historian, author, and alliance leader within the Pentecostal movement. Synan published a total of 25 books, a majority related to Holiness, Pentecostal, and Charismatic movements. He served as General Secretary of the International Pentecostal Holiness Church and later as Chair of the North American Renewal Service Committee from 1985 to 2001. From 1994 - 2006 he served as Dean of the School of Divinity at Regent University in Virginia Beach, Virginia. In 2016, Synan moved back to Tulsa, Oklahoma to re-join the faculty of Oral Roberts University as Interim Dean of the College of Theology and Ministry, where he served for two years. Following that he served as Scholar in Residence at Oral Roberts University where he worked closely with William M. Wilson, the president of ORU, the World Pentecostal Fellowship, and Empowered21.