Cognomen Nimnaun (Nimnaun 
) , in the entire world, is a very rare family name. The cognomen Nimnaun is habitual in Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname. Likewise, Nimnaun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nimnaun | United States, Thailand |