Cognomen Klangswasdi (Klangswasdi 
) , around the globe, is a very rare family name. The cognomen Klangswasdi is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, Klangswasdi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Klangswasdi | Thailand |
Hattaporn, and Chalermkiat