| Arauá River | |
| Pushpin Map: | Brazil |
| River System: | Aripuanã River |
| Source1 Location: | Amazonas state |
| Mouth Location: | Aripuanã River, Novo Aripuanã, Amazonas |
| Mouth Coordinates: | -5.3442°N -60.4322°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Brazil |
The Arauá River (Portuguese: Rio Arauá) is a river of Amazonas state in north-western Brazil. It is a tributary of the Aripuanã River.
The Arauá River runs through the Juma Sustainable Development Reserve, created in 2006.It merges into the Aripuanã shortly before the latter merges into the Madeira River.