Cognomen Kluasaeng (Kluasaeng 
) , all around the world, is an extremely rare family name. The family name Kluasaeng is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kluasaeng | Thailand |
Chamonwan, Duangnapa, and Damrongsak