Cognomen จิระรัตน์ (Jirarat 
, Chirarat 
, จิระรัตน์ ) , globally, is a rare family name. The surname จิระรัตน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname, and Malaysia, where it is an extremely rare surname. More frequently, จิระรัตน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jirarat | Australia, United States, Thailand |
| Chirarat | Malaysia, United States, Thailand |
| จิระรัตน์ | Thailand |