Family name Buyai (Buyai 
) , around the world, is a very rare last name. The last name Buyai is characteristic of South-eastern Asia, particularly Malaysia, where it is a very rare surname, and Thailand, where it is an extremely rare surname. Also, Buyai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Buyai | Malaysia, Spain, India, Thailand |