Cognomen Phuongthong (Phuongthong 
) , in all the world, is an extremely rare surname. The family name Phuongthong is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, Phuongthong is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phuongthong | Thailand |