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Last name Wanner (Wanner , 万纳 , فانر) , globally, is a common cognomen. The last name Wanner is habitual in Western Europe, particularly Switzerland, where it is quite a common surname, Austria, where it is quite a rare surname, and Germany. In absolute terms, this name is the most popular in Germany, the United States, and Switzerland. Much less frequently, Wanner is the forename as well as the last name.