| Nay Aru | |
|---|---|
 Nayaru in Mullaitivu | |
| Location | |
| Country | Sri Lanka |
| Province | Northern Province |
| District | Mullaitivu District |
| Physical characteristics | |
| Source | |
| • location | Mullaitivu District |
| Mouth | Nai Aru Lagoon |
• location | Mullaitivu District |
• coordinates | 9°08′00″N 80°49′00″E / 9.1333°N 80.8167°E |
| Length | 20 km (12 mi) |
| Basin size | 187 km2 (72 sq mi) |
The Nay Aru (or Nai Aru) is a small river in Northern Province, Sri Lanka. The 20 km (12 mi) long river rises in south-east Mullaitivu District, before flowing north-east through Mullaitivu District. The river empties into Nai Aru Lagoon.[1]