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Family name קין (Qin , Keen , Keane ) , in all the world, is a prevalent cognomen. The surname קין is habitual in Ireland, where it is a common surname, Cayman Islands, where it is quite a common surname, and Malaysia (explore the name in all countries). In absolute terms, it most frequently occurs in China, the United States, and Malaysia. Very seldom, קין is the forename as well as the last name.