Scholars of religion have repeatedly debated and contested the role of religion and spirituality in combatting climate change. In recent years, the potential of religion has also become an issue among natural scientists, politicians, environmental organizations, and civil society. Indeed, the potential of religion to mitigate climate change is perceived both internally and externally, and various expectations are placed on religion. This article examines the perceived potential of religion in mitigating climate change and how this is being realized. Based on 38 interviews, conducted with representatives from religious communities and umbrella organizations in Germany and Switzerland, we focus on the areas of values, political influence, and materialization. Our results show that the potential of religion in addressing climate change remains largely unfulfilled despite increasing steps in this direction.