| Vaia | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Mureș County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Suveica, Găiești, Vălenii |
| Length: | 10km (10miles) |
| Mouth: | Niraj |
| Mouth Location: | Acățari |
| Mouth Coordinates: | 46.4703°N 24.6483°W |
| Basin Size: | 35km2 |
The Vaia is a left tributary of the river Niraj in Romania. Near Acățari it flows into the Vețca canal, which discharges into the Niraj in Cinta. Its length is 10km (10miles) and its basin size is 35km2.