Family name โรจนฤทธิ์ชัย (โรจนฤทธิ์ชัย 
) , in the entire world, is a very rare surname. The last name โรจนฤทธิ์ชัย is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| โรจนฤทธิ์ชัย | Thailand |