Last name จรูญกุล (จรูญกุล 
, Charoonkul , Charunkun ) , across the world, is a rare cognomen. The last name จรูญกุล is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, จรูญกุล is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| จรูญกุล, Charunkun, Jaroonkul, Charoonkul | Thailand |
Charoonkoon, and Jaroonkun