| Camanaú River | |
| Pushpin Map: | Brazil |
| River System: | Curiuaú River |
| Source1 Location: | Amazonas |
| Mouth Location: | Curiuaú River |
| Mouth Coordinates: | -1.8215°N -61.2291°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Brazil |
Camanaú River is a river of Amazonas state in north-western Brazil, a tributary of the Curiuaú River.
Most of the river basin is in the Waimiri Atroari Indigenous Territory.