Surname Khamsirichaikun (Khamsirichaikun 
) , worldwide, is an extremely rare last name. The family name Khamsirichaikun is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Khamsirichaikun | Thailand |
Korakan, Ketsaraporn, and Ketsaraphon