Last name กุลชัยรัตนา (กุลชัยรัตนา 
) , throughout the world, is a very rare cognomen. The family name กุลชัยรัตนา is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| กุลชัยรัตนา | Thailand |
|
ปองพล กุลชัยรัตนา TH (b. 1988) |
|