| Whitefish River | |
| Pushpin Map: | Canada Manitoba |
| Pushpin Map Caption: | Location of the mouth of the Whitefish River in Manitoba. |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Manitoba |
| Subdivision Type3: | Region |
| Subdivision Name3: | Northern Region |
| Subdivision Type4: | Census Division |
| Subdivision Name4: | No. 21 |
| Length: | 43km (27miles) |
| Source1: | Rocky Lake |
| Source1 Coordinates: | 54.0792°N -101.555°W |
| Source1 Elevation: | 260m (850feet) |
| Mouth: | Saskatchewan River |
| Mouth Coordinates: | 53.85°N -101.3839°W |
| Mouth Elevation: | 256m (840feet) |
The Whitefish River is a river in Census Division 21 in the Northern Region of Manitoba, Canada. It is in the Hudson Bay and Nelson River drainage basins and is a left tributary of the Saskatchewan River.
The river begins at Rocky Lake and heads east to Root Lake. It then turns south, passes through Reader Lake, and reaches its mouth at the Saskatchewan River, just upstream of the community of Big Eddy Settlement and 8km (05miles) west of The Pas, Manitoba.