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Cognomen Sundin (Sundin , 桑丁 , Сундин ) , worldwide, is quite a common surname. The cognomen Sundin is habitual in Northern Europe, particularly Sweden, where it is quite a common surname, Norway, where it is quite a rare surname, and Latvia. Not in comparison with a country's population, it most frequently occurs in Sweden, the United States, and Brazil. Much less frequently, Sundin is the forename as well as the last name.