Cognomen Phetphairin (Phetphairin 
) , around the globe, is an extremely rare surname. The last name Phetphairin is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More frequently, Phetphairin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phetphairin | Thailand |