Family name Nilavan (Nilavan 
) , in all the world, is a rare surname. The family name Nilavan is habitual in Sri Lanka, where it is a rare surname, India, where it is an extremely rare surname, and Malaysia. Measured by absolute frequency, this name is the most popular in Sri Lanka, India, and the United States. Also, Nilavan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nilavan | Australia, Canada, Thailand, India, Sri Lanka |