Clark D. Campbell (PhD, Western Seminary) is professor and dean of the Rosemead School of Psychology at Biola University. Previously he was professor of psychology and director of clinical training at the Graduate School of Clinical Psychology at George Fox University. He is the coauthor of Integrative Psychotherapy with Mark R. McMinn.

Campbell previously served as adjunct associate professor of psychiatry and family medicine at the Oregon Health and Sciences University, and as a clinical psychologist in private practice. Many of his articles have been published in professional psychology journals including Journal of Psychology and Theology, Journal of Psychology and Christianity, Professional Psychology: Research and Practice, and The Family Psychologist.