Cognomen Wongkamharn (Wongkamharn 
) , in the entire world, is a very rare surname. The family name Wongkamharn is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Wongkamharn | Thailand |
Somana, Chalida, Boonthom, Alongkorn, and Walongkorn