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Last name Masek (Masek , Mašek , ماسيك) , across the world, is a common cognomen. The cognomen Masek is characteristic of Czechia, where it is quite a common surname, Slovakia, where it is quite a rare surname, and Croatia. In absolute terms, it is commonest in Czechia, the United States, and Slovakia. Very seldom, Masek is the forename as well as the last name.