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Cognomen Hanning (汉宁 , Hanning , 寒凝 ) , across the world, is quite a rare family name. The cognomen Hanning is characteristic of Sweden, where it is quite a rare surname, New Zealand, and Germany, where it is a rare surname. Not in comparison with a country's population, the name is most common in the United States, China, and Germany. Likewise, Hanning is the forename as well as the last name.