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Surname Litvjak (Литвяк , Litvjak ) , worldwide, is quite a rare family name. The cognomen Litvjak is characteristic of Ukraine, where it is quite a rare surname, Estonia, and Kazakhstan, where it is a rare surname. In absolute terms, it is commonest in Ukraine, Russia, and Kazakhstan. Very seldom, Litvjak is the forename as well as the last name.