Surname Khongsamkhan (Khongsamkhan 
) , across the world, is a very rare family name. The family name Khongsamkhan is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Khongsamkhan | Thailand |
Ubon, Sanoe, Supaporn, and Phakphilai