Cognomen Phaiphaeo (Phaiphaeo 
) , around the world, is an extremely rare last name. The last name Phaiphaeo is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Likewise, Phaiphaeo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phaiphaeo | Thailand |