| Balsas River | |
| Pushpin Map: | Brazil |
| River System: | Tocantins River |
| Source1 Location: | Tocantins state |
| Mouth Location: | Tocantins |
| Mouth Coordinates: | -9.8821°N -47.8405°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Brazil |
The Balsas River is a river of Tocantins state in central Brazil, a tributary of the Do Sono River.
The river basin includes part of the Serra Geral do Tocantins Ecological Station, a strictly protected conservation unit created in 2001 to preserve an area of the Cerrado.