Surname Phapongyun (Phapongyun 
) , across the world, is a very rare last name. The last name Phapongyun is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Phapongyun | Thailand |
Siriporn, Peeradech, and Watcharaporn