Fort Severn First Nation is a Cree First Nation band government located on Hudson Bay and is the most northern community in Ontario, Canada.In 2001, the population was 401, consisting of 90 families in an area of 40 square kilometres. The legal name of the reserve is Fort Severn 89, with the main settlement of Fort Severn. The town is linked by winter/ice road called the Wapusk Trail in the winter to Peawanuck, Ontario in the east, and Shamattawa and Gillam, Manitoba to the west. Fort Severn is policed by the Nishnawbe-Aski Police Service, an Aboriginal-based service.