Last name กุลวงศ์ษา (กุลวงศ์ษา 
) , across the world, is an extremely rare cognomen. The last name กุลวงศ์ษา is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| กุลวงศ์ษา | Thailand |