Surname Khuiarphai (Khuiarphai 
) , in all the world, is a very rare cognomen. The family name Khuiarphai is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Khuiarphai | Thailand |
Tawat, Lalada, Cheewynn, Danuphon, and Padungpong