About 80% of the world's population professes a religion. In many countries, religious actors play a major role in development, e.g. education and the satisfaction of basic needs. At the same time, freedom of religion or belief (FoRB) seems to be increasingly restricted and "religious" conflicts seem to be on the rise. We contribute to the international discussion how religion, and in particular FoRB, affects the Sustainable Development Goals. The project will provide policy recommendations with regard to potential religious partners in development cooperation.