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Cognomen Bost (بوست , Bost , Бос ) , globally, is a common surname. The cognomen Bost is characteristic of U.S. Virgin Islands, where it is quite a common surname, France, where it is quite a rare surname, and the United States. Not in comparison with a country's population, this name is the most popular in the United States, France, and Germany. Very seldom, Bost is the forename as well as the last name.