Last name Phomphakwaen (Phomphakwaen 
) , in the entire world, is an extremely rare surname. The cognomen Phomphakwaen is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Very seldom, Phomphakwaen is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phomphakwaen | Thailand |