The Ours River (French: Rivière à l'Ours, Bear River) is a tributary of Gulf of Saint Lawrence, flowing in the municipality of Havre-Saint-Pierre, in the Minganie Regional County Municipality, in the administrative region of Côte-Nord, in the Province of Quebec, Canada.

The mouth of Lac à l'Ours is located on the south shore of an L-shaped bay stretching over 2.8 km (1.7 mi).

[7] The region around Lac à l'Ours can be reached by canoe from the Romaine, Puyjalon and Ours rivers, with only a few short portages, but the easiest access is by float plane.

The surface is very irregular, deeply incised by many V-shaped valleys whose direction is determined by shear zones, faults, and by glacial action along the joints parallel to the ice movement.

[11] As of 1966 most of the region had no trees, since a forest fire twenty years earlier had destroyed almost all the vegetation and burned the thin layer of humus that covered the rock.

[12] The name "Rivière à l'Ours" appears on a map dated 1960, and was made official on 5 December 1968.

[5] The toponym "rivière à l'Ours" was formalized on December 5, 1968 at the Place Names Bank of the Commission de toponymie du Québec.