The Una River is a river of Bahia state in eastern Brazil. It is a small river that starts in Serra Geral and flows near Iramaia (in the Centro Sul Baiano mesoregion) before discharging into the Paraguaçu River.
| Una River | |
|---|---|
 | |
  | |
| Native name | Rio Una (Portuguese) |
| Location | |
| Country | Brazil |
| Physical characteristics | |
| Mouth | |
• coordinates | 12°55′29″S 41°03′22″W / 12.924702°S 41.056007°W |
| Basin features | |
| River system | Paraguaçu River |