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Family name 幸夫 (Yukio , 幸夫 ) , across the world, is a common last name. The last name 幸夫 is characteristic of Japan, where it is quite a rare surname, Cyprus, and Singapore, where it is a rare surname. Measured by absolute frequency, it is commonest in Japan, China, and Indonesia. Also, 幸夫 is the forename as well as the last name.