Cognomen นิ่มวัฒนา (นิ่มวัฒนา, Nimwatana 
) , in the world, is an extremely rare family name. The surname นิ่มวัฒนา is habitual in Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Nimwatana | United States, Thailand |