Family name กุลกาลยืนยง (กุลกาลยืนยง 
) , throughout the world, is a very rare cognomen. The surname กุลกาลยืนยง is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| กุลกาลยืนยง | Thailand |