The lac Starr (English: Starr Lake) is a freshwater body in the head area of the Moncouche River (via the lac Moncouche), in the unorganized territory of Belle-Rivière, in the Lac-Saint-Jean-Est Regional County Municipality, in the administrative region from Saguenay–Lac-Saint-Jean, in the province of Quebec, in Canada.

Lac Starr is located just north of the northwestern limit of the Laurentides Wildlife Reserve.

Many forest roads surround the Starr Lake area for forestry and recreational tourism activities.

The surface of Lake Starr is usually frozen from the beginning of December to the end of March.

[3] The toponym "lac Starr" was formalized on August 28, 1973, by the Commission de toponymie du Québec.