Cognomen Khamyodjai (Khamyodjai 
) , in all the world, is a very rare family name. The cognomen Khamyodjai is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Khamyodjai | Thailand |
Siwaporn, Nipaporn, Siriyaporn, and Chisanucha