Cognomen Kusolkarn (Kusolkarn 
) , in the entire world, is a very rare family name. The surname Kusolkarn is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kusolkarn | Thailand |
Seri, Sumeth, Jirayut, Thanyanuch, Thanyanut, and Pichayakorn