Cognomen Namngeun (Namngeun 
) , all over the world, is an extremely rare family name. The family name Namngeun is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more frequently, Namngeun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Namngeun | Canada, Laos, Thailand |