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Cognomen Isic (Isic ) , in the entire world, is quite a rare surname. The cognomen Isic is characteristic of Southern Europe, particularly Bosnia and Herzegovina, where it is quite a common surname, Montenegro, where it is quite a rare surname, and Serbia. Measured by absolute frequency, this name is the most popular in Bosnia and Herzegovina, Serbia, and Philippines. Very seldom, Isic is the forename as well as the last name.