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Cognomen Droz (Droz , Дроз , دروز) , all around the world, is quite a rare family name. The family name Droz is characteristic of Liechtenstein, where it is quite a common surname, Switzerland, and Puerto Rico, where it is quite a rare surname. Measured by absolute frequency, it is the most numerous in the United States, Switzerland, and France. Very seldom, Droz is the forename as well as the last name.