Family name Jirathawarnkul (Jirathawarnkul 
) , all around the world, is a very rare cognomen. The cognomen Jirathawarnkul is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Jirathawarnkul | Thailand |
Praewvarin, and Chompoonuch