The São Miguel River is a river of Rondônia state in western Brazil. It is a tributary of the Guaporé River.
| São Miguel River | |
|---|---|
 | |
| Location | |
| Country | Brazil |
| Physical characteristics | |
| Source | |
| • location | Rondônia state |
| Mouth | |
• coordinates | 12°30′S 63°33′W / 12.500°S 63.550°W |