Cognomen Osmyn (Osmyn 
, Осмин 
) , across the world, is a very rare family name. The cognomen Osmyn is characteristic of Honduras, where it is a very rare surname, Kazakhstan, and Russia. Likewise, Osmyn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Osmyn | Saint Kitts and Nevis, Honduras, United States, Canada, Venezuela |
| Осмин | Kazakhstan, Russia, Ukraine |