Last name อุณฤทธิ์ (อุณฤทธิ์ 
) , around the globe, is a very rare surname. The surname อุณฤทธิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Also, อุณฤทธิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| อุณฤทธิ์ | Thailand |