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Family name Bảo (Bảo , Бао , バオ ) , across the world, is quite a common cognomen. The family name Bảo is characteristic of Vietnam, where it is quite a rare surname, Macao, and Sudan, where it is a rare surname. Measured by absolute frequency, it is the most numerous in Vietnam, Russia, and Sudan. Also, Bảo is the forename as well as the last name.