Cognomen Rujithamkul (Rujithamkul 
) , globally, is an extremely rare surname. The cognomen Rujithamkul is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, Rujithamkul is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rujithamkul | Thailand |