Last name ราชนุกูล (ราชนุกูล 
) , throughout the world, is an extremely rare family name. The family name ราชนุกูล is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Likewise, ราชนุกูล is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ราชนุกูล | Thailand |