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Last name Klotz (Kloc
, Klotz
, Kloss
) , around the world, is a common family name. The last name Klotz is characteristic of Germany, where it is quite a common surname, Austria, and Poland, where it is quite a rare surname. Not in comparison with a country's population, the name is most common in Germany, the United States, and Poland. Very seldom, Klotz is the forename as well as the last name.