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Family name Gruber (Gruber , Грубер , גרובר ) , around the world, is a common last name. The family name Gruber is characteristic of Western Europe, particularly Austria, where it is a common surname, Germany, where it is quite a common surname, and Liechtenstein (explore the name in all countries). Measured by absolute frequency, the name is most common in Germany, Austria, and the United States. Very seldom, Gruber is the forename as well as the last name.