Surname Iampongsa (Iampongsa 
) , in all the world, is a very rare family name. The cognomen Iampongsa is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, Iampongsa is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Iampongsa | Thailand |
Tawan, Kingkaew, Panadtha, Bodintorn, and Papitchaya