John Alexander Dowie has long been known as a theological forebear of the Pentecostal Movement. What has been less known is the extent to which he was influenced by the theology and practices of the Mormon tradition. This article seeks to identify these influences and place them in the historical/theological context of Dowie's life and ministry. The article goes on to show that Dowie operated within the broad theological context of the Calvinistic wing of 19th Century Perfectionism known as the Keswick Movement. His theological understanding was modified by insights drawn from Edward Irving and the Catholic Apostolic Church. Within this theological framework, parallels with Mormon teaching can be detected in his utopian vision, evangelistic strategy, and proposed ecclesiastical structures.