Family name Poluboyarynov (Poluboyarynov 
, Полубояринов 
) , across the world, is quite a rare cognomen. The surname Poluboyarynov is characteristic of Russia, where it is a rare surname, Kazakhstan, and Ukraine, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Poluboyarynov | United States |
| Полубояринов | Kazakhstan, Russia, Ukraine |