Family name Luntheng (Luntheng 
) , in the world, is a very rare last name. The last name Luntheng is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Luntheng | Thailand |
Dollajit, Alongkot, Thunmaruk, Prangchanok, and Wachirawit