| Oarba | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Galați County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Suceveni |
| Length: | 17km (11miles) |
| Mouth: | Horincea |
| Mouth Coordinates: | 45.9722°N 28.0951°W |
| Progression: | Horincea→ |
| Basin Size: | 48km2 |
| Custom Label: | River code |
| Custom Data: | XIII.1.23.3 |
The Oarba is a right tributary of the river Horincea in Romania. It flows into the Horincea in Rogojeni. Its length is 17km (11miles) and its basin size is 48km2.