Cognomen Thonghluang (Thonghluang 
) , around the globe, is an extremely rare family name. The surname Thonghluang is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Very seldom, Thonghluang is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thonghluang | Thailand |