Cognomen Бориссов (Borissov 
, Бориссов 
) , around the globe, is a rare family name. The last name Бориссов is habitual in Estonia, where it is quite a common surname, Bulgaria, where it is quite a rare surname, and Lithuania, where it is a rare surname. Not in comparison with a country's population, it is commonest in Bulgaria, Estonia, and the United States. Very seldom, Бориссов is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Borissov | Germany, Estonia, United States, Bulgaria, Poland |
| Бориссов | Russia |