Lichen Lake is a freshwater body crossed by the Opawica River in the southeastern part of Eeyou Istchee James Bay (Municipality), in Jamésie, in the administrative region of Nord-du-Québec, in the province of Quebec, in Canada.

This lake extends into the townships of La Ronde, Marin, Margry, Lespérance, Lesueur and Le Tac.

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

This plant is popular with large mammals (including caribou) is resistant despite poor weather conditions.

The toponym "Lac Lichen" was made official on December 5, 1968 by the Commission de toponymie du Québec.