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Cognomen Zahn (Zahn , زان , Цан , among others...) , around the globe, is a common family name. The last name Zahn is habitual in Western Europe, particularly Liechtenstein, where it is quite a common surname, Germany, and Switzerland, where it is quite a rare surname. Measured by absolute frequency, the name is most common in Germany, the United States, and Brazil. Much less frequently, Zahn is the forename as well as the last name.