Surname Phoonsab (Phoonsab 
) , in the entire world, is an extremely rare family name. The family name Phoonsab is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More frequently, Phoonsab is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phoonsab | Thailand |
Maksin, Phosri, Seejanhom, Poomkaew, Suwannarin, and Mahanantapo