'The Little River') is a tributary of the Gulf of Saint Lawrence, flowing in the eastern part of the municipality of L'Île-d'Anticosti, in the Minganie Regional County Municipality, in the administrative region of Côte-Nord, in province of Quebec, in Canada.

The main forest road (east–west direction) of Anticosti Island indirectly serves the upper part of this valley.

[1] La Petite Rivière draws its source from a very small lake (altitude: 83 m (272 ft)) surrounded by marshes and located in the eastern part of Anticosti Island.

Its course descends on 16.9 km (10.5 mi), with a drop of 82 m (269 ft), according to the following segments: La Petite Rivière empties into the western part of Cybèle Bay, on the south shore of Anticosti Island.

The toponym "La Petite Rivière" was made official on September 12, 1974, at the place name bank of the Commission de toponymie du Québec.