Lake Nemiscau

Lake Nemiscau
Satellite view of Nemiscau Lake
Location	Baie-James, Jamésie Territory, Quebec
Coordinates	51°25′40″N 76°43′12″W / 51.42778°N 76.72000°W / 51.42778; -76.72000Coordinates: 51°25′40″N 76°43′12″W / 51.42778°N 76.72000°W / 51.42778; -76.72000
Primary inflows	Rupert River Nemiscau River
Primary outflows	Rupert River
Basin countries	Canada

Lake Nemiscau (in French: Lac Nemiscau) is a freshwater lake, located in the municipality of Eeyou Istchee James Bay, in the administrative region of Nord-du-Québec, in north-western Quebec, in Canada. The lake Nemiscau is crossed by Rupert River.

The abandoned settlement of Nemiscau is on the north shore, but in recent years, Cree people have been re-establishing Nemiscau as a summer residence. The nearest village is the town of Nemaska, about 60 km northeast.

Lake Nemiscau is crossed by Rupert River coming from South and also fed by Nemiscau River coming from East.

The designation "Nimisco Lake" appears on an old card entitled "Partie de la Nouvelle-France" (Part of New France), by Alexis Jaillot, Paris, 1685. The designation "Lake Nemisko" is on the "Map of Canada or New France and who Discoveries there have been made", by Guillaume Delisle, Paris, 1703. The spelling" Nemisco L. appears on the card entitled "A New and Exact map of the Dominions of the King of great Britain on the continent of North America", [London], in 1715, revised in 1732 or after.

The place name Lake Nemiscau was formalized on December 2, 1982 by the Commission de toponymie du Québec (English: Quebec Names Board).