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Cognomen Rosinski (Rosinski , Rosiński ) , all over the world, is quite a common last name. The surname Rosinski is habitual in Poland, where it is quite a common surname, Germany, where it is quite a rare surname, and France, where it is a rare surname. Measured by absolute frequency, it is the most numerous in Poland, the United States, and Germany. Also, Rosinski is the forename as well as the last name.