Last name หิรัญศิรเดช (หิรัญศิรเดช 
) , across the world, is an extremely rare surname. The cognomen หิรัญศิรเดช is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| หิรัญศิรเดช | Thailand |