Robert Lake is a freshwater body of the southeastern part 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 Feuquières and Robert.

Lake Robert's surface is usually frozen from early November to mid-May, however, safe ice circulation is generally from mid-November to mid-April.

The Ventadour River (coming from the South) is the main tributary of Lake Robert; the second, the outlet of Feuquières Lake (coming from the East).

The toponym "lac Robert" was officialized on December 5, 1968 by the Commission de toponymie du Québec, when it was created.