This editorial introduces the special issue on Diverse Disciplinary Approaches to the Study of Adolescent Religious and Spiritual Development. First, a case is made for the importance of the special issue, focusing on the utility of diverse approaches in providing a richer understanding of the phenomena of interest. Second, a summary is given of the six target pieces in the special issue. These target articles were written by scholars from six disciplines doing work relevant to adolescent religious and spiritual development: developmental psychology, sociology, cultural psychology, social and personality psychology, cognitive psychology, and developmental neuroscience. It is hoped that this special issue strengthens the quality of scholarship in this research area, encourages interdisciplinary work, and enriches our understanding of adolescent religious and spiritual development.