Last name Majernik (Majernik 
) , across the world, is quite a rare cognomen. The surname Majernik is habitual in Slovakia, where it is quite a common surname, Czechia, where it is quite a rare surname, and Australia, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Slovakia, the United States, and Czechia.
| VARIANT | COUNTRY |
|---|---|
| Majernik | Australia, Canada, Slovakia, Czechia, United States |