| Lupoaia | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Gorj County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Lupoița, Lupoaia |
| Length: | 10km (10miles) |
| Mouth: | Motru |
| Mouth Coordinates: | 44.8022°N 22.9491°W |
| Basin Size: | 16km2 |
| Custom Label: | River code |
| Custom Data: | VII.1.36.5 |
The Lupoaia is a left tributary of the river Motru in Romania. It flows into the Motru near the village Lupoaia. Its length is 10km (10miles) and its basin size is 16km2.