Family name Klangpraphun (Klangpraphun 
) , in the entire world, is an extremely rare last name. The last name Klangpraphun is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Klangpraphun | Thailand |
Niyaphun, Thunvasamon, and Natphatsorn