Family name หิรัญธนกุล (หิรัญธนกุล 
, Hirantanakul , Hiruntanakul ) , in the entire world, is a very rare surname. The surname หิรัญธนกุล is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Hirantanakul, หิรัญธนกุล, Hiruntanakul | Thailand |