Last name Phasomphon (Phasomphon 
) , in all the world, is a very rare family name. The surname Phasomphon is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, Phasomphon is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phasomphon | Thailand |