Surname Phoomphong (Phoomphong 
) , in the world, is a very rare last name. The family name Phoomphong is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More frequently, Phoomphong is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phoomphong | United States, Thailand |