Surname Khamkomphongsavat (Khamkomphongsavat 
) , across the world, is a rare cognomen. The family name Khamkomphongsavat is characteristic of South-eastern Asia, particularly Laos, where it is quite a rare surname, and Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Khamkomphongsavat | Laos, Thailand |