Surname Kaewphaithun (Kaewphaithun 
) , all over the world, is a very rare last name. The cognomen Kaewphaithun is characteristic of South-eastern Asia, particularly Myanmar, where it is a very rare surname, and Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kaewphaithun | Myanmar, Thailand |