Cognomen Дренски (Дренски 
, Drensky 
) , all over the world, is a rare last name. The family name Дренски is characteristic of Bulgaria, where it is quite a rare surname, Greece, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Дренски | Russia, Bulgaria |
| Drensky | Greece, United States, Bulgaria |
|
петър дренски BG (b. 1876) |
|
| пенчо дренски Bulgarian arachnologist (1886-1963), BG (b. 1886) |
|
|
| никола дренски BG (b. 1898) |
|