Cognomen Luangchaisin (Luangchaisin 
) , all around the world, is a very rare family name. The cognomen Luangchaisin is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Luangchaisin | Thailand |
Sunan, Waeota, and Patchalisa