Family name Khumsang (Khumsang 
) , in the entire world, is a very rare last name. The cognomen Khumsang is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, Khumsang is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khumsang | India, Thailand |