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Family name Dunker (Dunkel
, Dunker
, Дункер
) , all over the world, is a common last name. The surname Dunker is characteristic of Suriname, where it is quite a common surname, Germany, and Switzerland, where it is quite a rare surname. Not in comparison with a country's population, it most frequently occurs in Germany, the United States, and Brazil. Very seldom, Dunker is the forename as well as the last name.