Alexander Whyte (1836–1921) was a renowned Scottish preacher, theologian, and author, born in Etterby, Carlisle, England. He served as the minister of Saint George's Presbyterian Church in Edinburgh for over 40 years, where he was highly respected for his insightful sermons and deep spiritual insight. Throughout his life, Whyte was dedicated to writing and teaching on Christian spirituality, theology, and prayer, making significant contributions to Christian thought in the 19th and early 20th centuries.