Cognomen Phompasit (Phompasit 
) , throughout the world, is a very rare surname. The last name Phompasit is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More prevalently, Phompasit is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phompasit | Laos, Thailand |