Abstract. This article describes the transformation of Catholic theological education over the last fifty years from a highly defensive posture vis-à-vis other religions toward dialogical engagement with members of other religions and all persons of good will. Until Vatican II, most Catholic theologians and officials distrusted exploration of other religions as leading to a dilution of Catholic identity. Vatican II condemned anti-Semitism and called for dialogue among religions in pursuit of common values. Since the Council, there have been developments in interfaith education on three levels: religious studies, comparative theology, and inter-religious practice.