| Betsiamites River | |
| Map: | Betsiamites map.png |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Quebec |
| Subdivision Type3: | Region |
| Subdivision Name3: | Saguenay–Lac-Saint-Jean, Côte-Nord |
| Length: | 444km (276miles)to head of Manouanis River [1] |
| Discharge1 Avg: | 340m3/s |
| Source1: | Lake Manouanis |
| Source1 Location: | Mont-Valin |
| Source1 Coordinates: | 50.7528°N -70.3222°W |
| Mouth: | Saint Lawrence River |
| Mouth Location: | Betsiamites FN Reserve |
| Mouth Coordinates: | 48.9333°N -68.6222°W |
| Mouth Elevation: | 0m (00feet) |
| Basin Size: | 18700km2 |
The Betsiamites (also called Bersimis) is a river of Côte-Nord, Quebec, Canada, which joins the Saint Lawrence River.
The Pipmuacan Reservoir, impounded by the Bersimis-1 Dam, is roughly halfway down its course.[2]
There are two hydro-electric power stations and dams on the Betsiamites, owned by Hydro-Québec: