The rivière au Saumon (English: Salmon River) is a tributary of the Saint-Jean River, flowing in the unorganized territory of Lac-Jérôme, in the Minganie Regional County Municipality, in the administrative region of Côte-Nord, in the province of Quebec in Canada.

[1] The salmon river draws its source at the mouth of a small lake (length: 0.4 km (0.25 mi); altitude: 490 m (1,610 ft)) in the unorganized territory of Lac-Jérôme.

The mouth of this lake is located at: From its source, the Salmon river flows over 71.7 km (44.6 mi) with a drop of 468 m (1,535 ft), entirely in the forest zone, according to the following segments: Upper course of the salmon river (segment of 30.6 km (19.0 mi)) Lower course of the salmon river (segment of 41.1 km (25.5 mi)) The Salmon River flows on the west bank of the Saint-Jean River, about halfway between the southern limit of Labrador and the north shore of the Gulf of Saint Lawrence.

This confluence is located at: From the mouth of the Salmon river, the current descends the course of the Saint-Jean River towards the southwest on 43.4 km (27.0 mi) , to the north shore of Gulf of Saint Lawrence.

[1] The toponym "rivière au Saumon" was formalized on December 5, 1968, at the Place Names Bank of the Commission de toponymie du Québec.