Cognomen Khamnuengsouk (Khamnuengsouk 
) , in the world, is a rare last name. The surname Khamnuengsouk 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 |
|---|---|
| Khamnuengsouk | Laos, Thailand |