Surname ดำรงศักดิ์ (Damrongsak 
, Dumrongsak , ดำรงศักดิ์) , in the entire world, is a rare family name. The cognomen ดำรงศักดิ์ is characteristic of Thailand, where it is a rare surname, Canada, where it is an extremely rare surname, and the United States. More frequently, ดำรงศักดิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Damrongsak | United Kingdom, Thailand, United States, Canada, Myanmar |
| Dumrongsak | United States, Thailand |
Damrondsak, Damrongsaak, Damrongsakdi, Damronsak, Damroungsak, Damsongsak, Demrongsak, Dumrongsaksir, Dumrongsark, and Durnrongsak