Cognomen Jirunthorn (Jirunthorn 
) , all around the world, is a very rare surname. The cognomen Jirunthorn is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, Jirunthorn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jirunthorn | Thailand |