Cognomen Маржак (Маржак 
, Mařák 
) , in all the world, is a rare surname. The cognomen Маржак is habitual in Eastern Europe, particularly Czechia, where it is a rare surname, and Ukraine, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Маржак | Ukraine |
| Mařák | Czechia |