The Du Tast Lake is a freshwater body of the municipality of Eeyou Istchee James Bay, in the administrative region of Nord-du-Québec, in the province of Quebec, at Canada. The hydrographic slope of Lake Du Tast is accessible through the forest road to the North from Matagami and passing 12.7 kilometres (7.9 mi) west of the lake. The surface of the lake is usually frozen from early November to mid-May, however, safe ice circulation is generally from mid-November to mid-April.