Last name ถาวรวัฒนกิจ (ถาวรวัฒนกิจ 
) , across the world, is an extremely rare family name. The surname ถาวรวัฒนกิจ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| ถาวรวัฒนกิจ | Thailand |