Surname Chaiarpai (Chaiarpai 
) , worldwide, is a very rare cognomen. The family name Chaiarpai is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Chaiarpai | Thailand |
Ladda, Anurak, Anuruk, Rarephong, and Rapeephong