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Surname Bulen (Bulen , 布伦 , בולן ) , globally, is a rare last name. The last name Bulen is habitual in Belgium, where it is quite a rare surname, Venezuela, where it is a rare surname, and Indonesia. Not in comparison with a country's population, it most frequently occurs in Indonesia, the United States, and Belgium. Likewise, Bulen is the forename as well as the last name.