Cognomen Chaiyaphuak (Chaiyaphuak 
) , in the world, is an extremely rare last name. The family name Chaiyaphuak is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Likewise, Chaiyaphuak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chaiyaphuak | Thailand |
| santi chaiyaphuak Thai footballer, TH (b. 1978) |
|