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Last name Kucinski (Kucinski , Kuciński ) , across the world, is quite a rare surname. The surname Kucinski is habitual in Poland, where it is quite a rare surname, the United States, where it is a rare surname, and Czechia. Measured by absolute frequency, this name is the most popular in Poland, the United States, and Germany. Likewise, Kucinski is the forename as well as the last name.