The Ventadour Lake is a freshwater body of the southeastern portion of the Eeyou Istchee James Bay (municipality), in Jamésie, in the administrative region of Nord-du-Québec, in the province of Quebec, in Canada.

This body of water extends in the townships of Ventadour and Feuquières.

The hydrographic slope of Lake Ventadour is accessible via the forest road R1032 (North-South direction) which passes on the west side of lakes Gabriel and Ventadour; in addition, this road crosses the Ventadour River south of Ventadour Lake to merge south on route 212 which passes on the south side of the Ventadour River, connecting Obedjiwan to La Tuque.

The surface of Ventadour Lake is usually frozen from early November to mid-May, however, safe ice circulation is generally from mid-November to mid-April.

Lake Ventadour is located at 4.8 kilometres (3.0 mi) west of the administrative boundaries of Saguenay-Lac-Saint-Jean and Eeyou Istchee James Bay (municipality).