Family name Poovayanphong (Poovayanphong 
) , throughout the world, is a very rare last name. The surname Poovayanphong is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Poovayanphong | Thailand |
Phisut, Papisut, and Thalerngsak