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Surname Janik (Janik , Яник , Янік ) , all over the world, is a common cognomen. The family name Janik is characteristic of Eastern Europe, particularly Poland, where it is quite a common surname, Slovakia, and Czechia. Not in comparison with a country's population, the name is most common in Poland, Germany, and the United States. Also, Janik is the forename as well as the last name.