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Family name Jasek (Jasek ) , all around the world, is quite a rare cognomen. The surname Jasek is habitual in Eastern Europe, particularly Czechia, where it is quite a common surname, Slovakia, where it is quite a rare surname, and Poland. Measured by absolute frequency, this name is the most popular in Poland, Czechia, and the United States. Also, Jasek is the forename as well as the last name.