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Last name Wider (Wider ) , in the entire world, is quite a rare family name. The cognomen Wider is habitual in Western Europe, particularly Switzerland, where it is quite a rare surname, Germany, where it is a rare surname, and Austria. Not in comparison with a country's population, this name is the most popular in Switzerland, Germany, and the United States. Much less frequently, Wider is the forename as well as the last name.