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Last name Buena (Buena , 比娜 , בואנה ) , all over the world, is a common surname. The last name Buena is characteristic of Philippines, where it is quite a common surname, Paraguay, where it is quite a rare surname, and United Arab Emirates. Measured by absolute frequency, it is the most numerous in Philippines, Mexico, and Argentina. Much less frequently, Buena is the forename as well as the last name.