| Oreavu | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Vrancea County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Odobasca, Urechești |
| Length: | 18km (11miles) |
| Mouth: | Râmna |
| Mouth Coordinates: | 45.5828°N 27.1554°W |
| Progression: | Râmna→ |
| Basin Size: | 40km2 |
The Oreavu is a left tributary of the river Râmna in Romania. It flows into the Râmna in the village Oreavu.[1] Its length is 18km (11miles) and its basin size is 40km2.