Moosonee is a town in northern Ontario, Canada, on the Moose River approximately 19 kilometres (12 mi) south of James Bay. It is considered as "the Gateway to the Arctic" and has Ontario's only saltwater port. Nearby on Moose Factory Island is the community of Moose Factory to which it is connected by water taxi in the summer and ice road in the winter.
Moosonee is the railhead of the Ontario Northland Railway where goods are transferred to barges and aircraft for transport to more northerly communities. Moosonee is not particularly far north, being located at 51°N—which is roughly the same latitude as Saskatoon, Calgary, London, UK, and Berlin—but is isolated due to its lack of road access to the rest of Ontario. The community was the site of a fur trading post set up in 1903 by Révillon Frères, competitors to the Hudson's Bay Company which later bought out Révillon.