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Cognomen ביאר (Bayard , Beyar , Biard ) , all over the world, is a common family name. The cognomen ביאר is characteristic of France, where it is quite a common surname, Switzerland, where it is quite a rare surname, and Haiti. Measured by absolute frequency, the name is most common in France, the United States, and Haiti. Much less frequently, ביאר is the forename as well as the last name.