Bolmen is a lake in Småland, Sweden. Covering 184 km², and with a maximum depth of 37 m, it supplies a considerable part of Skåne with fresh water by means of an 82-km long tunnel, the Bolmen Water Tunnel, built during the 1970s and 80s. Bolmen is situated at the heart of Finnveden, one of the small lands of today's Småland.