Family name กุลธาดาศักดิ์ (กุลธาดาศักดิ์ 
) , globally, is an extremely rare last name. The family name กุลธาดาศักดิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| กุลธาดาศักดิ์ | Thailand |