Cognomen นันทร์ (Nan 
, นันทร์ 
) , in all the world, is a widespread surname. The cognomen นันทร์ is characteristic of Myanmar, where it is a common surname, Malaysia, where it is quite a common surname, and China (explore the name in all countries). Measured by absolute frequency, the name is most common in China, Myanmar, and India. Also, นันทร์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nan | Malaysia, China, India, United States, Myanmar |
| นันทร์ | Thailand |