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Cognomen Iida (イイダ , Iida , Иида ) , around the world, is quite a rare surname. The family name Iida is habitual in Hong Kong, where it is quite a rare surname, Japan, where it is a rare surname, and Estonia. In absolute terms, it most frequently occurs in Japan, the United States, and Brazil. More frequently, Iida is the forename as well as the last name.