Family name กุลวัฒนา (Kunlawattana 
, กุลวัฒนา , Kunwattana 
) , all over the world, is a very rare surname. The surname กุลวัฒนา is characteristic of Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname. Also, กุลวัฒนา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| กุลวัฒนา, Kunlawattana, Kulwatana | Thailand |
| Kunwattana | United States, Thailand |
Kulawattana, and Kullawattana