Cognomen Khangthong (Khangthong 
) , throughout the world, is a very rare surname. The last name Khangthong is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, Khangthong is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khangthong | India, Thailand |