In Islamic Leadership in the European Lands of the Former Ottoman and Russian Empires the history and contemporary development of Islamic leadership in over a dozen of Eastern European countries is analysed. The studies are presented through a double prism: the institutional structures of the Muslim communities and the place of the muftiates in the current national constellations on one hand, and the dimension of the spiritual guidance emanating from the muftiates on the other. The latter includes aspects such as the muftiates powers and role in supervision of mosques and other religious institutions, production, dissemination and control of religious knowledge and discussions on traditional and non-traditional forms of Islam engaged in by the muftiates.