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Last name Sikorska (Sikorska ) , globally, is quite a common surname. The last name Sikorska is characteristic of Poland, where it is quite a common surname, Ireland, where it is quite a rare surname, and Latvia, where it is a rare surname. Measured by absolute frequency, it most frequently occurs in Poland, the United Kingdom, and Germany. More prevalently, Sikorska is the forename as well as the last name.