Surname นฤสิทธิ์ (นฤสิทธิ์ 
) , in the world, is an extremely rare cognomen. The last name นฤสิทธิ์ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More frequently, นฤสิทธิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| นฤสิทธิ์ | Thailand |