Cognomen Klangtakai (Klangtakai 
) , throughout the world, is a very rare family name. The cognomen Klangtakai is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Klangtakai | Thailand |
Pinya, Rutsamee, Tanakhon, Tienthong, and Poungpakar