| Una da Aldeia River | |
|---|---|
  | |
| Native name | Rio Una da Aldeia (Portuguese) |
| Location | |
| Country | Brazil |
| Physical characteristics | |
| Mouth | |
• coordinates | 24°38′12″S 47°25′44″W / 24.636801°S 47.428797°W |
| Length | 41 kilometres (25 mi) |
| Basin features | |
| River system | Ribeira de Iguape River |
| Tributaries | |
| • left | Espraiado River |
The Una da Aldeia River (Portuguese: Rio Una da Aldeia) is a river in the south of the state of São Paulo, Brazil. It is a tributary of the Ribeira de Iguape River.