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Family name Bâ (Bâ , با , Ба ) , in the entire world, is a common cognomen. The cognomen Bâ is habitual in Senegal, where it is quite a common surname, Mauritania, and Algeria, where it is quite a rare surname. In absolute terms, this name is the most popular in Senegal, Egypt, and Algeria. Likewise, Bâ is the forename as well as the last name.