Cognomen Laokhen (Laokhen 
) , in the entire world, is a very rare surname. The family name Laokhen is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Laokhen | Thailand |
Kham, Sumali, Piamsak, Narongsak, and Kanlayanee