Last name กุลวัฒนากิจ (กุลวัฒนากิจ 
) , worldwide, is an extremely rare surname. The surname กุลวัฒนากิจ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| กุลวัฒนากิจ | Thailand |