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Last name Sarnecki (Sarnecki , Сарнецкий ) , in the world, is quite a rare surname. The surname Sarnecki is habitual in Poland, where it is quite a rare surname, Slovakia, where it is a rare surname, and Switzerland. Measured by absolute frequency, it is commonest in Poland, the United States, and Germany. Likewise, Sarnecki is the forename as well as the last name.