Cognomen Phiphatthanaphong (Phiphatthanaphong 
) , globally, is an extremely rare family name. The surname Phiphatthanaphong is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More frequently, Phiphatthanaphong is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phiphatthanaphong | Thailand, Australia |
Inkhao, Phothisan, and Sitthichansen