Cognomen Namgon (Namgon 
) , across the world, is a very rare surname. The cognomen Namgon is habitual in New Zealand, where it is a very rare surname, Thailand, and the United States, where it is an extremely rare surname. Much more frequently, Namgon is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Namgon | New Zealand, South Korea, Thailand, United States |