Cognomen Bunyavejchewin (Bunyavejchewin 
) , in the world, is a rare family name. The last name Bunyavejchewin is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Bunyavejchewin | Thailand |
| sarayudh bunyavejchewin researcher |
|