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In the world, Hiyu (Hiyu ) is a rare unisex first name. The forename Hiyu is characteristic of Ethiopia, where it is a rare masculine name, Japan, where it is a rare girly name, and Malaysia, where it is a very rare gender-neutral name. Measured by absolute frequency, it is the most numerous in Ethiopia, Japan, and China. Much less frequently, Hiyu is the last name as well as the forename.