| Whitefish River | |
| Pushpin Map: | Canada Ontario |
| Pushpin Map Caption: | Location of the mouth of the Whitefish 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: | Kenora |
| Length: | 38km (24miles) |
| Source1: | Unnamed lake |
| Source1 Coordinates: | 51.58°N -92.3964°W |
| Source1 Elevation: | 445m (1,460feet) |
| Mouth: | Berens River |
| Mouth Coordinates: | 51.6744°N -92.6622°W |
| Mouth Elevation: | 373m (1,224feet) |
The Whitefish River is a river in Kenora District in northwestern Ontario, Canada. It is in the Hudson Bay and Nelson River drainage basins and is a tributary of the Berens River.
The river begins at an unnamed lake and flows south to Retter Lake. It heads west, takes in the left tributary outflow from an unnamed creek from Blondin Lake, and turns north to take in the right tributary outflow from an unnamed creek from Turp Lake. The river then heads northwest, takes in left tributary unnamed creek outflow from Coathup Lake and reaches its mouth at the Berens River, which empties into Lake Winnipeg.