James W. Fowler III (October 12, 1940 – October 16, 2015) was an American theologian who was Professor of Theology and Human Development at Emory University. He was director of both the Center for Research on Faith and Moral Development and the Center for Ethics until he retired in 2005. He was a minister in the United Methodist Church.
He is best known for his book Stages of Faith, published in 1981, in which he sought to develop the idea of a developmental process in "human faith".
These stages of faith development were along the lines of Jean Piaget's theory of cognitive development and Lawrence Kohlberg's stages of moral development.
Fowler's model has inspired a considerable body of empirical research into faith development, although little of such research has been conducted by Fowler himself. A useful tool here has been Gary Leak's Faith Development Scale, or FDS, which has been subject to factor analysis by Leak (Leak, 2008). For criticism see Developmental approaches to religion.