| Pali Aru | |
| River | |
| Country | Sri Lanka |
|---|---|
| State | Northern Province |
| District | Vavuniya District Mullaitivu District Mannar District |
| Source | Vavuniya District |
| Mouth | Palk Bay |
| - elevation | 0 m (0 ft) |
| Length | 50 km (31 mi) |
| Basin | 451 km2 (174 sq mi) |
Pali Aru is a river in Northern Province, Sri Lanka. The river rises in northern Vavuniya District, near Puliyankulam, before flowing north/northwest through Vavuniya District, Mullaitivu District and Mannar District. The river empties into Palk Bay. The southern section of the river is sometimes known as Chamalankulam Aru.
Coordinates: 9°10′00″N 80°06′00″E / 9.1667°N 80.1000°E