Surname ดำรงหาญวิทย์ (ดำรงหาญวิทย์, Damronghanwit 
) , in the world, is a very rare family name. The cognomen ดำรงหาญวิทย์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Damronghanwit | Thailand |