Throughout the world, นิลาศ (นิลาศ 
) is a very rare boy's forename. The forename นิลาศ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare male name. Much less frequently, นิลาศ is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| นิลาศ | Thailand |