Family name Chayuntamapun (Chayuntamapun 
) , around the world, is a very rare surname. The last name Chayuntamapun is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Chayuntamapun | Thailand |
Kasin, Rungsun, and Kanlayanee