| São Miguel River | |
| Pushpin Map: | Brazil |
| Pushpin Map Caption: | Location of mouth |
| Source1 Location: | Alagoas state |
| Mouth: | Atlantic Ocean |
| Subdivision Type1: | Country |
| Subdivision Name1: | Brazil |
| Subdivision Type2: | State |
| Subdivision Name2: | Alagoas |
São Miguel River is a river of Alagoas state in eastern Brazil.