Surname ธรรมสว่าง (ธรรมสว่าง, Thamsawang 
) , all around the world, is an extremely rare last name. The surname ธรรมสว่าง is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Thamsawang | Thailand |