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Surname Lisak (Lisak , Лисак ) , in all the world, is a common last name. The cognomen Lisak is habitual in Ukraine, where it is quite a common surname, Croatia, and Bosnia and Herzegovina, where it is quite a rare surname. Measured by absolute frequency, this name is the most popular in Ukraine, Poland, and Croatia. Much less frequently, Lisak is the forename as well as the last name.