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Family name 桑丁 (Sandin , Sundin , 桑丁 ) , throughout the world, is a common surname. The last name 桑丁 is characteristic of Sweden, where it is quite a common surname, Uruguay, where it is quite a rare surname, and Finland. Measured by absolute frequency, this name is the most popular in Sweden, the United States, and Brazil. Very seldom, 桑丁 is the forename as well as the last name.