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