Surname ธัมรงค์ (ธัมรงค์ 
) , in the world, is a very rare family name. The last name ธัมรงค์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. More frequently, ธัมรงค์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ธัมรงค์ | Thailand |