Last name ดำรงค์ศักดิ์ (Damrongsak 
, Dumrongsak , ดำรงค์ศักดิ์) , in the world, is a rare family name. The cognomen ดำรงค์ศักดิ์ is characteristic of Thailand, where it is a rare surname, Canada, where it is an extremely rare surname, and the United States. More prevalently, ดำรงค์ศักดิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Damrongsak | United Kingdom, United States, Myanmar, Thailand, Canada |
| Dumrongsak | United States, Thailand |
Damronngsak, and Damruksa