Last name กุลถิรา (กุลถิรา 
) , globally, is an extremely rare cognomen. The last name กุลถิรา is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Also, กุลถิรา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| กุลถิรา | Thailand |