Cognomen Chuaysai (Chuaysai 
) , in the entire world, is a very rare surname. The surname Chuaysai is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Chuaysai | Thailand |
Santi, Sumalee, Panaiyakorn, and Watcharakorn