Cognomen Bounnaphonh (Bounnaphonh 
) , around the globe, is quite a rare surname. The last name Bounnaphonh is characteristic of South-eastern Asia, particularly Laos, where it is quite a common surname, and Thailand, where it is a very rare surname. Much less frequently, Bounnaphonh is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Bounnaphonh | Thailand, Laos |