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Last name דואן (Doğan , Duan , Doane ) , around the world, is a prevalent cognomen. The cognomen דואן is characteristic of Turkey, where it is a widespread surname, Cayman Islands, where it is quite a common surname, and China (explore the name in all countries). Measured by absolute frequency, it is commonest in China, Turkey, and the United States. Much less frequently, דואן is the forename as well as the last name.