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Surname 上坂 (Uesaka , 上坂 ) , around the globe, is a very rare cognomen. The cognomen 上坂 is habitual in Germany, where it is a very rare surname, Indonesia, and Canada, where it is an extremely rare surname. Measured by absolute frequency, it is commonest in Indonesia, China, and Germany. Also, 上坂 is the forename as well as the last name.