| Whetstone 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: | 9.2km (05.7miles) |
| Source1: | Forest and mountain streams |
| Source1 Location: | Saint-Pierre-de-Broughton |
| Source1 Coordinates: | 46.2257°N -71.157°W |
| Source1 Elevation: | 538m (1,765feet) |
| Mouth: | Palmer River |
| Mouth Location: | Saint-Pierre-de-Broughton |
| Mouth Coordinates: | 46.2378°N -71.2295°W |
| Mouth Elevation: | 277m (909feet) |
| River System: | Palmer River, Bécancour River, St. Lawrence River |
| Tributaries Left: | (upstream) |
| Tributaries Right: | (upstream) ruisseau de la Source |
| Country: |  Canada |
The Whetstone River (in French: rivière Whetstone) is a tributary of the Palmer River whose current flows successively into the Bécancour River, then on the south shore of the St. Lawrence River .
The Whetstone River flows in the municipality of Saint-Pierre-de-Broughton, 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 Whetstone River are:
The Whetstone River rises on the northeast slope of the "Montagne du Neuf" in the municipality of Saint-Pierre-de-Broughton, at east of village and near the ninth rang road.
From the head area (route du 9e rang), the Whetstone River flows over divided into the following segments:
The Whetstone River drains on the east bank of the Palmer River in the Municipality of Saint-Pierre-de-Broughton. Its confluence is located upstream of a 15th rang road bridge and downstream of the 16th rang, located southwest of the village of Saint-Pierre-de-Broughton.
The toponym "Whetstone River" was made official on December 5, 1968, at the Commission de toponymie du Québec.[2]