| Dusaux Lake | |
|---|---|
 Broadback River basin in yellow | |
  Dusaux Lake | |
| Location | Baie-James |
| Coordinates | 50°45′56″N 77°57′26″W / 50.76556°N 77.95722°W |
| Type | Natural |
| Primary inflows | Nottaway River, Davoust River |
| Primary outflows | Nottaway River |
| Basin countries | Canada |
| Max. length | 23.0 kilometres (14.3 mi) |
| Max. width | 1.7 kilometres (1.1 mi) |
| Surface area | 10.58 kilometres (6.57 mi) |
| Surface elevation | 210 metres (690 ft) |
| Islands | 16 |
Lake Dusaux is a freshwater body of the territory of Eeyou Istchee Baie-James (municipality), in the administrative region of Nord-du-Québec, in the province of Quebec, in Canada.
The Dusaux Lake hydrographic slope is accessible via the James Bay (north-south) road from Matagami to 10.4 kilometres (6.5 mi) on the East side of Lake Dusaux, and then going back north passing between Mouliers Lake and Katutupisisikanuch. The surface of the lake is generally frozen from early November to mid-May, however safe ice circulation is generally from mid-November to mid-April.