Cognomen ดิลกนวฤทธิ์ (ดิลกนวฤทธิ์ 
) , throughout the world, is a very rare surname. The last name ดิลกนวฤทธิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| ดิลกนวฤทธิ์ | Thailand |