| Louvart | |
| Map: | Broadback map.png |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Quebec |
| Subdivision Type3: | Region |
| Subdivision Name3: | Nord-du-Québec |
| Length: | 14.4km (08.9miles)[1] |
| Source1: | Malsain Lake |
| Source1 Location: | Eeyou Istchee Baie-James (municipalité), Nord-du-Québec, Jamésie, Quebec |
| Source1 Coordinates: | 50.8544°N -77.9508°W |
| Source1 Elevation: | 214m (702feet) |
| Mouth: | Lepallier River |
| Mouth Location: | Eeyou Istchee Baie-James (municipalité), Nord-du-Québec, Jamésie, Quebec |
| Mouth Coordinates: | 50.93°N -78.0467°W |
| Mouth Elevation: | 179m (587feet) |
The Louvart River is a tributary of the south shore of the Lepallier River flowing into the municipality of EeyouIstchee Baie-James (municipality), in the administrative region of Nord-du-Québec, in Quebec, in Canada.
The course of the Louvart River is located southwest of James Bay Reserve.
A winter forest road (North-South direction) passes to on the east side of Louvart Lake, between Chaboullié Lake and Rodayer Lake. This road is more or less parallel to the west side of the James Bay main road from Matagami and further north.
The surface of the Louvart River is usually frozen from early November to mid-May, however, safe ice circulation is generally from mid-November to mid-April.
The toponym Louvart River was formalized on December 5, 1968 at the Commission de toponymie du Québec, at the creation of this commission.[2]