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Family name コンノ (コンノ , Konno ) , all around the world, is quite a rare surname. The surname コンノ is characteristic of Estonia, where it is quite a rare surname, Latvia, and Japan, where it is a rare surname. Measured by absolute frequency, it is commonest in Japan, Brazil, and the United States. More prevalently, コンノ is the forename as well as the last name.