| Soscumica Lake | |
|---|---|
 Watershed of Nattaway River | |
  Soscumica Lake | |
| Location | Baie-James, Quebec |
| Coordinates | 50°16′21″N 77°27′33″W / 50.27250°N 77.45917°W |
| Type | Natural |
| Primary inflows | Muskiki River, Nottaway River, Deux Lacs River. |
| Max. length | 39.9 kilometres (24.8 mi) |
| Max. width | 8.8 kilometres (5.5 mi) |
| Surface area | 66.97 square kilometres (25.86 sq mi) |
Soscumica Lake is a lake of the southern portion of Eeyou Istchee James Bay (municipality), in the administrative region of Nord-du-Québec, in the province of in south-western Quebec, Canada. The southern part of Lake Soscumica extends into Millet Township.
Forestry is the main economic activity of the sector. Recreational tourism (especially hunting and fishing) comes second, thanks to the navigable body of water, including the tributaries.
The hydrographic slope of Lake Soscumica is accessible via the James Bay Highway (North-South direction) to 22.8 kilometres (14.2 mi) to the East. The west side of the lake is served by a winter road (North-South direction). The surface of the lake is usually frozen from early November to mid-May, however, safe ice circulation is generally from mid-November to mid-April.