| Nilavarai | |
| Native Name: | Tamil: நிலாவரை Sinhala; Sinhalese: නිලවරම |
| Pushpin Map: | Sri Lanka Northern Province |
| Subdivision Type: | Country |
| Subdivision Name: | Sri Lanka |
| Subdivision Type2: | Province |
| Subdivision Name2: | Northern |
| Subdivision Type3: | District |
| Subdivision Name3: | Jaffna |
| Subdivision Type4: | DS Division |
| Subdivision Name4: | Valikamam East |
| Coordinates: | 9.75°N 80.0833°W |
Nilavarai is a location in the Jaffna District, Sri Lanka. It is popular for a natural underground Water well (Called Nilavari Bottomless well) where the water never gets depleted and it serves the irrigation of the neighbouring fields.[1] There is another natural Water well in the Jaffna District by the name Idikundu (Idi-kun-du).