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Last name Holubek (Holubek ) , across the world, is quite a rare family name. The surname Holubek is characteristic of Slovakia, where it is quite a rare surname, Croatia, and Czechia, where it is a rare surname. Measured by absolute frequency, this name is the most popular in Slovakia, Germany, and the United States. Much less frequently, Holubek is the forename as well as the last name.