Family name Долбниа (Долбниа 
, Dolbnia 
) , around the globe, is a very rare surname. The family name Долбниа is habitual in Georgia, where it is a rare surname, Belarus, where it is a very rare surname, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Долбниа | Russia |
| Dolbnia | Georgia, Belarus |