Cognomen Chaiyaai (Chaiyaai 
) , around the world, is a very rare last name. The surname Chaiyaai is habitual in Thailand, where it is a very rare surname, and India, where it is an extremely rare surname. Much less frequently, Chaiyaai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chaiyaai | India, Thailand |