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Globally, Killen (基伦 , Killen , كيلن, among others...) is a rare masculine first name. The forename Killen is characteristic of Sweden, where it is a rare boy's name, Tanzania, where it is a very rare masculine name, and China. In absolute terms, the name is most common in China, Tanzania, and India. More prevalently, Killen is the last name as well as the forename.
Killen is also a name for the fictitious and mythical characters: .