Surname โรจน์ทนง (โรจน์ทนง 
) , in all the world, is a very rare last name. The cognomen โรจน์ทนง is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, โรจน์ทนง is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| โรจน์ทนง | Thailand |