This article surveys the theories of prominent psychologists of religion - W. James, S. Freud, C. G. Jung, E. Promm, A. H. Maslow, and E. H. Erikson. It shows that they are concerned with the process of self-actualization though not all of them use that term. Finally, their theories of self-actualization are considered in relation to religion. The psychologists of religion delineated the process of human psychological growth in analyzing religion as a research object, whether presenting an authentic way of religion or criticizing an actual way of religion. Despite of their differences and their uniquenesses, the processes they described are so similar that one can include them under the title of self-actualization. Self-actualization is the...