Surname กุลกุศล (Kulkarn 
, กุลกุศล , Kunkusol ) , throughout the world, is a rare cognomen. The last name กุลกุศล is habitual in Thailand, where it is a rare surname, India, where it is an extremely rare surname, and the United States. Much less frequently, กุลกุศล is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kulkarn | India, United States, Thailand |
| Kunkusol, กุลกุศล | Thailand |