| Paru de Oeste River | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Brazil |
| Length: | 710km (440miles)[1] |
| Source1 Location: | Pará, Brazil |
| Mouth: | Trombetas River |
| Mouth Location: | BR |
| Mouth Coordinates: | -1.5194°N -56.0347°W |
The Paru de Oeste River (Erepecuru River) is a tributary of the Trombetas River in Pará in north-central Brazil.
In addition to the main river, it has a "loop" known as the Cuminá River, which finally merges into the Paru de Oeste River about 6km (04miles) before the latter merges into the Trombetas. The confluence of Paru de Oeste and Trombetas is almost 35km (22miles) upriver from the city of Oriximiná.
The river basin lies partly within the Grão-Pará Ecological Station, the largest fully protected tropical forest conservation unit on the planet.
Further south it flows through the Trombetas State Forest from north to south.