Surname แก่นเวียงรัตน์ (แก่นเวียงรัตน์, Kaenwiangrat 
) , in the entire world, is a very rare family name. The last name แก่นเวียงรัตน์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kaenwiangrat | Thailand |