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Surname Jaros (Jaros , Ярос , جاروس) , all around the world, is a common family name. The family name Jaros is characteristic of Eastern Europe, particularly Czechia, where it is quite a common surname, Slovakia, and Poland, where it is quite a rare surname. In absolute terms, it is the most numerous in Czechia, Poland, and the United States. Also, Jaros is the forename as well as the last name.