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Family name Yasen (Yasen , 亚森 , Ясен ) , all around the world, is a common last name. The cognomen Yasen is habitual in Egypt, where it is quite a common surname, Syria, where it is quite a rare surname, and Iraq. Measured by absolute frequency, this name is the most popular in Egypt, China, and Iraq. Also, Yasen is the forename as well as the last name.