Last name กุศลพงศ์ (กุศลพงศ์ 
) , in the world, is an extremely rare cognomen. The family name กุศลพงศ์ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Very seldom, กุศลพงศ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| กุศลพงศ์ | Thailand |