Cognomen พิทักษ์ดำรงวงศ์ (พิทักษ์ดำรงวงศ์, Pitakdamrongwong 
) , all over the world, is a very rare surname. The surname พิทักษ์ดำรงวงศ์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Pitakdamrongwong | Thailand |