La Trêve Lake is a freshwater body of the southern part of Eeyou Istchee James Bay (municipality), in the administrative region of Nord-du-Québec, in the province of Quebec, in Canada.

The surface of "Lac la Trêve" is usually frozen from early November to mid-May, however, safe ice circulation is generally from mid-November to mid-April.

Of very deformed nature, this lake includes: Note: The Geneviève and Rita bays are separated by a peninsula stretching Northeast on 8.6 kilometres (5.3 mi).

The Gilbert and Geneviève bays are separated by a peninsula stretching Northeast on 7.5 kilometres (4.7 mi) which encases Lake Gisèle.

[2] The toponym "Lac La Trêve" was formalized on December 5, 1968, by the Commission de toponymie du Québec when it was created.