The Roman Catholic Church is the largest, and most enduring continuous organization, secular or religious, of any kind in the world with a 2,000-plus-year history. It currently includes well over a billion people. Regardless of its size, scope, history, and impact, the Roman Catholic Church is often greatly misunderstood and people frequently maintain stereotypic and even discriminatory views about Catholics and their clerical leaders. The purpose of this article is to present the integration of the Roman Catholic tradition into psychological assessment and therapy and to provide several examples of this integration. The article highlights how this integration can be synergistic providing enhanced psychotherapy service with Catholic imagination and traditions in mind.