Surname Osyn (Осин 
, Osyn 
) , worldwide, is quite a common cognomen. The cognomen Osyn is habitual in Russia, where it is quite a rare surname, Kazakhstan, and Belarus, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Осин | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Osyn | Czechia, United States |