Surname ปฐมโรจนฤทธิ์ (ปฐมโรจนฤทธิ์ 
, Pathomrojjanarit , Pathomrojanarit ) , in the world, is a rare last name. The last name ปฐมโรจนฤทธิ์ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| ปฐมโรจนฤทธิ์, Pathomrojanarit, Pathomrojjanarit | Thailand |