| Willow River | |
| Source1 Coordinates: | 45.8091°N -89.0674°W |
| Mouth Coordinates: | 45.7016°N -89.9413°W |
| Mouth Elevation: | 1526feet |
The Willow River is a river in Oneida County, Wisconsin, that merges with the Tomahawk River by way of the Willow Flowage. Historically the Willow River was a significant white pine logging region.[1]