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Cognomen Ryznar (Ryznar
) , worldwide, is a rare surname. The last name Ryznar is characteristic of Czechia, where it is quite a rare surname, Poland, and Croatia, where it is a rare surname. Not in comparison with a country's population, it is the most numerous in Poland, Czechia, and the United States. Also, Ryznar is the forename as well as the last name.