In this introduction, we reflect on the relationship between religion and memory, a subfield that should, as we argue, become more visible within memory studies. First, we show how religion was originally conceptualized by the founders of memory studies and how it is being discussed today by contemporary memory scholars. Second, we demonstrate the memory-forming potential of religion. Finally, we call for a postsecular turn in memory studies. We claim that such a critical turn could help memory scholars be more reflective and become more aware of the religious roots of the concepts they are using when they approach memory. It would also help them to grasp how much the religious and the secular interwind in the memory processes occurring in the heterogenous societies of the present-day world.