Cognomen Chamnikun (Chamnikun 
) , worldwide, is a very rare last name. The last name Chamnikun is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Chamnikun | Thailand |
Lakkhana, Jeerasak, Teeradat, Wittahawat, and Khajohnsak