Last name Boiarko (Боярко 
, Boiarko 
) , throughout the world, is quite a rare cognomen. The surname Boiarko is habitual in Eastern Europe, particularly Ukraine, where it is quite a rare surname, Russia, and Belarus, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Боярко | Belarus, Russia, Kazakhstan, Ukraine |
| Boiarko | Georgia, Brazil |