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Family name 大石 (Oishi , Dashi , 大石 ) , throughout the world, is a common last name. The surname 大石 is habitual in Albania, where it is quite a common surname, Kosovo, and Mongolia, where it is quite a rare surname. Measured by absolute frequency, it is the most numerous in Bangladesh, Myanmar, and Albania. Likewise, 大石 is the forename as well as the last name.