| Rivière du Cinq | |
| Pushpin Map: | Quebec |
| 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, Robert-Cliche Regional County Municipality |
| Source1: | Lac du Cinq |
| Mouth: | Bras Saint-Victor |
| Mouth Location: | Saint-Victor |
| River System: | St. Lawrence River |
| Tributaries Left: | (upstream) ruisseau Pépin, ruisseau Cloutier, ruisseau Roy. |
| Tributaries Right: | (upstream) ruisseau Labranche, ruisseau Gosselin, ruisseau Paré, cours d'eau Lessard. |
The rivière du Cinq (in English: river of the five) is a tributary of the west bank of Bras Saint-Victor which flows into the Chaudière River; the latter flows northward to empty on the south shore of the St. Lawrence River.
The Rivière du Cinq flows in the administrative region of Chaudière-Appalaches, in Quebec, in Canada, in the MRC of:
The main neighboring watersheds of the Five River are:
The Rivière du Cinq has its source at Lac du Cinq (length: ; altitude:) which straddles the municipalities of Saint-Pierre-de-Broughton and Saint-Pierre-de-Broughton. This lake is located north of the village of East Broughton, north of route 112 and south-east of Mont Sainte-Marguerite.
From its source, the Rivière du Cinq flows over divided into the following segments:
The Rivière du Cinq flows on the west bank of the Bras Saint-Victor in the municipality of Saint-Victor. This last river flows into the Chaudière River in Beauceville. The confluence of the Rivière du Cinq is located upstream from the confluence of the Prévost-Gilbert River, at north-west of center of the village of Saint-Victor and north of route 108.
The toponym Rivière du Cinq was made official on June 12, 1970, at the Commission de toponymie du Québec.[2]