Family name Klingchuai (Klingchuai 
) , in all the world, is an extremely rare cognomen. The family name Klingchuai is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Klingchuai | Thailand |
Jumnuy, Thanawan, Chutiwatt, and Thunyaratt