Surname ฤทธิ์รณ (ฤทธิ์รณ 
) , across the world, is an extremely rare last name. The surname ฤทธิ์รณ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More prevalently, ฤทธิ์รณ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ฤทธิ์รณ | Thailand |