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Last name רוסט (Rost , Rust , Rosset ) , all around the world, is a common cognomen. The cognomen רוסט is habitual in Switzerland, where it is quite a common surname, Germany, and Namibia. Not in comparison with a country's population, this name is the most popular in Germany, the United States, and France. Very seldom, רוסט is the forename as well as the last name.