Cognomen Semernik (Semernik 
, Семерник 
) , all around the world, is a rare family name. The surname Semernik is characteristic of Belarus, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Ukraine, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Belarus, Russia, and Kazakhstan. Much less frequently, Semernik is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Semernik | Russia, China |
| Семерник | Belarus, Russia, Kazakhstan, Ukraine |