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Surname ดุ๊ก (Duke , Duk , Douk ) , in all the world, is a common cognomen. The last name ดุ๊ก is habitual in Trinidad and Tobago, where it is quite a common surname, Isle of Man, and Ireland (explore the name in all countries). In absolute terms, the name is most common in the United States, Nigeria, and the United Kingdom. Likewise, ดุ๊ก is the forename as well as the last name.