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Family name Ado (Ado , アド , Адо ) , across the world, is a widespread last name. The surname Ado is characteristic of Mongolia, where it is a common surname, Nigeria, where it is quite a common surname, and Bosnia and Herzegovina, where it is quite a rare surname. Not in comparison with a country's population, it most frequently occurs in Nigeria, Mongolia, and Philippines. Also, Ado is the forename as well as the last name.