Surname โรจนพงศ์ชัย (โรจนพงศ์ชัย 
) , all around the world, is an extremely rare family name. The cognomen โรจนพงศ์ชัย is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| โรจนพงศ์ชัย | Thailand |