Surname Osinskaia (Осинская 
, Osinskaia 
) , in all the world, is quite a rare last name. The cognomen Osinskaia is habitual in Kazakhstan, where it is quite a rare surname, Belarus, where it is a rare surname, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Осинская | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Osinskaia | Georgia |