Cognomen ดีดำรงชัย (ดีดำรงชัย, Deedamrongchai 
) , worldwide, is an extremely rare surname. The family name ดีดำรงชัย is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Deedamrongchai | Thailand |