Family name ธรรมจรัสวงศ์ (ธรรมจรัสวงศ์ 
) , around the world, is a very rare surname. The family name ธรรมจรัสวงศ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| ธรรมจรัสวงศ์ | Thailand |