This chapter introduces the current volume on the intersection of positive psychology and the psychology of religion. The chapter reviews the literature on positive psychology and the psychology of religion, finding commonalities by considering the ways in which religion and religiosity contribute to happiness and life well-lived. In considering the relation between religiosity and well-being, evidence from a diverse set of religious traditions are considered. In addition, research from different cultures and traditions are reviewed in order take into account the contributions from across the diversity of religions.