| Cotagaita River | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Bolivia |
| Subdivision Type3: | Region |
| Subdivision Name3: | Potosí Department, Nor Chichas Province |
| Source1 Coordinates: | -20.6039°N -65.8978°W |
| Mouth: | Tumusla River |
| Mouth Coordinates: | -20.6911°N -65.43°W |
The Cotagaita River is a river of Bolivia in the Potosí Department, Nor Chichas Province, Cotagaita Municipality. It is a right affluent of Tumusla River and belongs to the Pillku Mayu river basin..