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Cognomen Uematsu (ウエマツ , Uematsu , Уематсу ) , in the entire world, is a rare surname. The family name Uematsu is habitual in Hong Kong, where it is a rare surname, Japan, and Hungary. Measured by absolute frequency, it is the most numerous in Japan, Brazil, and China. More frequently, Uematsu is the forename as well as the last name.