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Last name Karasawa (カラサワ , Karasawa , Карасава ) , in the world, is a rare family name. The cognomen Karasawa is habitual in Ukraine, where it is a rare surname, Estonia, and Japan. Measured by absolute frequency, this name is the most popular in Japan, Ukraine, and the United States. More frequently, Karasawa is the forename as well as the last name.