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Around the globe, اولسن (Olsen , Killi , Olesen ) is a common largely boy's, but seldom feminine first name. The forename اولسن is characteristic of the Democratic Republic of the Congo, where it is quite a rare boy's name, Paraguay, and Albania. Not in comparison with a country's population, it is the most numerous in the Democratic Republic of the Congo, India, and Indonesia. More prevalently, اولسن is the last name as well as the forename.
اولسن is also a name for the fictitious and mythical characters: .