Cognomen Nauchan (Nauchan 
) , around the globe, is a very rare surname. The last name Nauchan is characteristic of Thailand, where it is a very rare surname, and India, where it is an extremely rare surname. Very seldom, Nauchan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nauchan | India, Thailand |