| Lachance River | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Quebec |
| Subdivision Type3: | Region |
| Subdivision Name3: | Centre-du-Québec |
| Subdivision Type4: | MRC |
| Subdivision Name4: | Arthabaska Regional County Municipality |
| Subdivision Type5: | Municipality |
| Subdivision Name5: | Victoriaville (sector Arthabaska), Saint-Norbert |
| Length: | 9.5km (05.9miles) |
| Source1: | Ruisseau Daigle-Sévigny |
| Source1 Location: | Saint-Norbert |
| Source1 Coordinates: | 46.1133°N -71.8542°W |
| Source1 Elevation: | 152m (499feet) |
| Mouth: | Gosselin River |
| Mouth Location: | Victoriaville (sector Saint-Christophe-d'Arthabaska) |
| Mouth Coordinates: | 46.0617°N -71.9133°W |
| Mouth Elevation: | 150m (490feet) |
| Progression: | Gosselin River, Nicolet River, St. Lawrence River |
| Tributaries Left: | (upstream) |
| Tributaries Right: | (upstream) |
| Country: |  Canada |
The Lachance river (in French: rivière Lachance) is a watercourse whose mouth flows into the Gosselin River, a tributary of the Nicolet River in the city of Victoriaville, in the Arthabaska Regional County Municipality (MRC), in the administrative region of Centre-du-Québec, in Quebec, in Canada.
The Lachance River sometimes flows in agricultural and urban areas.
The neighboring watersheds of the Lachance River are:
The Lachance river has its source west of the Demers road, north of the hamlet of Saint-Norbert.
The river flows more or less parallel (on the west side) to the Gosselin river.
The Lachance River flows on the east bank of the Gosselin River, in an area northeast of the city of Victoriaville, in the small valley dominated by Mont Saint-Michel. Its confluence is located upstream from the confluence of the Gosselin River (Nicolet River tributary) with the Nicolet River.[1]
The toponym Rivière Lachance was made official on August 7, 1978, at the Place Names Bank of the Commission de toponymie du Québec.[2]