| Bagot River | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Quebec |
| Subdivision Type3: | Region |
| Subdivision Name3: | Chaudière-Appalaches |
| Subdivision Type4: | MRC |
| Subdivision Name4: | Les Appalaches Regional County Municipality |
| Length Km: | 9.5 |
| Source1: | Forest and mountain streams |
| Source1 Location: | Saint-Adrien-d'Irlande |
| Source1 Coordinates: | 46.112°N -71.4276°W |
| Source1 Elevation: | 543m (1,781feet) |
| Mouth: | Bécancour River |
| Mouth Location: | Irlande |
| Mouth Coordinates: | 46.0744°N -71.4814°W |
| Mouth Elevation: | 194m (636feet) |
| Progression: | Bécancour River, St. Lawrence River |
| Tributaries Left: | (upstream) Ruisseau Grégoire |
| Tributaries Right: | (upstream) |
| Country: |  Canada |
The Bagot River (in French: rivière Bagot) is a tributary of the Bécancour River which is a tributary of the south shore of the St. Lawrence River.
The Bagot River flows in the municipalities of Saint-Adrien-d'Irlande and Irlande, in the Les Appalaches Regional County Municipality (MRC), in the administrative region of Chaudière-Appalaches, in Quebec, in Canada.
The main neighboring watersheds of the Bagot River are:
The Bagot River has its source in the municipality of Saint-Adrien-d'Irlande, on the north-western slope of Mont Saint-Adrien, at east of the center from the village of Saint-Adrien-d'Irlande, at north of the center of the village of Black Lake (a borough of the town of Thetford Mines) and west of downtown Thetford Mines.
From its head area, the Bagot River flows over divided into the following segments:
The Bagot River empties on the east bank of the Bécancour River. This confluence is located between Étang Stater and Lac à la Truite, to the south-east of the village of Bernierville and to the north-west of the hamlet of "Cranberry".
The toponym Rivière Bagot was formalized on October 6, 1983, at the Commission de toponymie du Québec.[2]