Surname หิรัญกาญจน์ (Hirankan 
, หิรัญกาญจน์ , Hirankarn 
) , throughout the world, is a rare family name. The surname หิรัญกาญจน์ is habitual in Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Very seldom, หิรัญกาญจน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hirankan | India, Thailand |
| หิรัญกาญจน์, Hirangarn | Thailand |
| Hirankarn | United States, Thailand |
Hirankanogpant, and Hirunkarn