Last name นิ่มนวลดี (นิ่มนวลดี, Nimnualdee 
) , all around the world, is an extremely rare family name. The cognomen นิ่มนวลดี is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Nimnualdee | Thailand |
Nimnuandee, and Smooth