Surname กุลหทัย (กุลหทัย 
) , globally, is a very rare cognomen. The family name กุลหทัย is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, กุลหทัย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| กุลหทัย | Thailand |