Cognomen Khwankhae (Khwankhae 
) , in the world, is an extremely rare surname. The last name Khwankhae is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More frequently, Khwankhae is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khwankhae | Thailand |