Family name Мацек (Macek 
, Мацек 
) , in all the world, is a common last name. The cognomen Мацек is characteristic of Slovenia, where it is quite a common surname, Czechia, and Slovakia. Measured by absolute frequency, the name is most common in Czechia, the United States, and Slovenia. Much less frequently, Мацек is the forename as well as the last name.