| Wolf River | |
| Pushpin Map: | Canada Ontario |
| Pushpin Map Caption: | Location of the mouth of the Wolf River in Ontario |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Ontario |
| Subdivision Type3: | Region |
| Subdivision Name3: | Northwestern Ontario |
| Subdivision Type4: | District |
| Subdivision Name4: | Thunder Bay District |
| Source1: | Upper Wolf Lake |
| Source1 Coordinates: | 48.9469°N -88.9778°W |
| Source1 Elevation: | 428m (1,404feet) |
| Mouth: | Lake Superior |
| Mouth Coordinates: | 48.8172°N -88.4858°W |
| Mouth Elevation: | 183m (600feet) |
| River System: | Great Lakes Basin |
The Wolf River is a river in Thunder Bay District in Northwestern Ontario, Canada.[1] It is in the Great Lakes Basin and is a tributary Lake Superior.
The river begins at Upper Wolf Lake in geographic Glen Township and heads east to Upper Clearwater Lake. It turns southeast through Lower Clearwater Lake, then east, northeast and once again southeast to Wolf Lake. It passes southeast out of the lake over a weir dam and enters the municipality of Dorion, heads under Ontario Highway 17/Ontario Highway 11 (at this point part of the Trans-Canada Highway) and the Canadian Pacific Railway transcontinental main line, and reaches Black Bay on Lake Superior.