Cognomen Pomphun (Pomphun 
) , around the world, is an extremely rare last name. The cognomen Pomphun is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Very seldom, Pomphun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pomphun | United States, Thailand |
Komsan, and Patcharaphon