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Cognomen Dejneka (Dejneka
, Дейнека
) , all around the world, is quite a common last name. The surname Dejneka is habitual in Eastern Europe, particularly Ukraine, where it is quite a common surname, Belarus, where it is quite a rare surname, and Poland. Measured by absolute frequency, the name is most common in Eastern Europe, particularly Ukraine, Russia, and Poland. Much less frequently, Dejneka is the forename as well as the last name.