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Family name Arlen (Arlen , Арлен , 阿伦 ) , all around the world, is a common cognomen. The cognomen Arlen is characteristic of Nicaragua, where it is a common surname, Honduras, where it is quite a common surname, and Armenia, where it is quite a rare surname. Measured by absolute frequency, the name is most common in Latin America and the Caribbean, particularly Nicaragua, Mexico, and Honduras. More frequently, Arlen is the forename as well as the last name.