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Cognomen Heyn (海恩 , Heyn
, ハイン) , across the world, is quite a common last name. The cognomen Heyn is characteristic of Paraguay, where it is quite a common surname, Namibia, where it is quite a rare surname, and Germany. Measured by absolute frequency, it is commonest in Germany, the United States, and Paraguay. Likewise, Heyn is the forename as well as the last name.