Surname סבסטיאנוב (Sevastyanov 
, סבסטיאנוב 
, Sevastjanov 
) , throughout the world, is a rare cognomen. The family name סבסטיאנוב is habitual in Estonia, where it is quite a rare surname, Bulgaria, where it is a rare surname, and Israel. Not in comparison with a country's population, the name is most common in Russia, Bulgaria, and Estonia.
| VARIANT | COUNTRY |
|---|---|
| Sevastyanov | Russia, Estonia, United States, Canada, Ukraine |
| סבסטיאנוב | Israel |
| Sevastjanov | Germany, Estonia |
| Sevastianov | Germany, Russia, Estonia, Bulgaria, United States |
Севастиянов, and Севастянов