Family name Phaphun (Phaphun 
) , throughout the world, is an extremely rare cognomen. The family name Phaphun is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More prevalently, Phaphun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phaphun | Thailand |
Ploypet, and Phutthiyawat