| Curuá Una River | |
| Pushpin Map: | Brazil |
| River System: | Amazon River |
| Source1 Location: | Pará state |
| Mouth Coordinates: | -2.3767°N -54.0753°W |
| Basin Size: | 24505km2 |
| Subdivision Type1: | Country |
| Subdivision Name1: | Brazil |
| Discharge1 Avg: | 680m3/s |
The Curuá Una River is a river of Pará state in north-central Brazil, a right tributary of the Amazon River.
The river flows through the Tapajós-Xingu moist forests ecoregion.Part of the river basin is in the Tapajós National Forest, a sustainable use conservation unit created in 1974.The Moju River, a tributary of the Curuá-Una, rises in the national forest.