Family name Khamtou (Khamtou 
) , globally, is an extremely rare cognomen. Much more prevalently, Khamtou is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khamtou | Thailand, Laos, United States |
Yvong, Veraha, Silaphet, Thanasouk, and Khamnuengsouk