Cognomen Klungseang (Klungseang 
) , globally, is a very rare family name. The cognomen Klungseang is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Klungseang | Thailand |
Thawee, Pornladda, Pimchanok, and Sitthiporn