The Sault River is a tributary of the Péribonka River, flowing in the unorganized territory of Passes-Dangereuses, in the Maria-Chapdelaine Regional County Municipality, in the administrative region of Saguenay–Lac-Saint-Jean, in the province of Quebec, in Canada.

The Sault river flows on the east side of the zec des Passes.

The watershed of the Sault river is served by the forest road R0250 which goes up the valley of Étienniche Lake and of the rivière des Prairies to reach lac Grenier and the Brodeuse River.

A few secondary roads serve the area for forestry and recreational tourism purposes.

The main neighboring watersheds of the Sault River are: The Sault River takes its source at the mouth of an unidentified lake (length: 0.2 km (0.12 mi); altitude: 484 m (1,588 ft)) in the unorganized territory of Passes- Dangerous.