Surname เพชรดำรงสกุล (เพชรดำรงสกุล, Petdamrongsakul 
) , in the entire world, is an extremely rare family name. The last name เพชรดำรงสกุล is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Petdamrongsakul | Thailand |