Cognomen นิทธ์นฤนาท (นิทธ์นฤนาท 
) , in all the world, is an extremely rare family name. The surname นิทธ์นฤนาท is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| นิทธ์นฤนาท | Thailand |