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Last name Kozma (Kozma , Козьма , Козма ) , around the globe, is a common family name. The surname Kozma is characteristic of Eastern Europe, particularly Hungary, where it is a common surname, Romania, where it is quite a rare surname, and Slovakia. Measured by absolute frequency, the name is most common in Eastern Europe, particularly Hungary, Romania, and Ukraine. Much less frequently, Kozma is the forename as well as the last name.