Cognomen Doinov (Doinov 
, Дойнов 
) , around the globe, is a rare surname. The last name Doinov is habitual in Eastern Europe, particularly Bulgaria, where it is quite a rare surname, Ukraine, where it is a rare surname, and Belarus. Measured by absolute frequency, this name is the most popular in Eastern Europe, particularly Bulgaria, Ukraine, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Doinov | Georgia, Russia, United States, Bulgaria |
| Дойнов | Kazakhstan, Belarus, Bulgaria, Russia, Ukraine |