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Family name Rutz (Rutz ) , globally, is a common last name. The last name Rutz is characteristic of Western Europe, particularly Liechtenstein, where it is quite a common surname, Switzerland, and Germany, where it is quite a rare surname. Not in comparison with a country's population, this name is the most popular in Germany, Switzerland, and the United States. Much less frequently, Rutz is the forename as well as the last name.