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Family name Gruetter (Gruetter ) , all around the world, is a rare last name. The last name Gruetter is characteristic of Western Europe, particularly Liechtenstein, where it is quite a rare surname, Switzerland, where it is a rare surname, and Austria. Measured by absolute frequency, the name is most common in the United States, Germany, and Switzerland. Much less frequently, Gruetter is the forename as well as the last name.