Surname โรจน์ฤทธิ์ไกร (โรจน์ฤทธิ์ไกร 
) , around the globe, is a very rare last name. The cognomen โรจน์ฤทธิ์ไกร is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| โรจน์ฤทธิ์ไกร | Thailand |