Family name Bolgarchuk (Bolgarchuk 
) , all over the world, is a very rare cognomen. The surname Bolgarchuk is habitual in Estonia, where it is a rare surname, and Russia, where it is an extremely rare surname. Likewise, Bolgarchuk is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Bolgarchuk | China, Russia, Estonia |