Cognomen Thongwang (Thongwang 
) , all over the world, is a very rare last name. The surname Thongwang is characteristic of Thailand, where it is a very rare surname, South Africa, where it is an extremely rare surname, and the United States. Likewise, Thongwang is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thongwang | United States, Thailand, India, South Africa |