| Montello River | |
| Pushpin Map: | Wisconsin#USA |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Wisconsin |
| Source1: | Near Harrisville |
| Source1 Coordinates: | 43.8773°N -89.4014°W |
| Source1 Elevation: | 820feet |
| Mouth: | Fox River |
| Mouth Coordinates: | 43.7872°N -89.324°W |
| Tributaries Left: | Klawitter Creek |
The Montello River is a river in central Wisconsin that is a tributary to the Fox River.[1] It starts near Harrisville and flows through Montello. The river is dammed there, where it forms 341acres Lake Montello.[2]