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Throughout the world, Giu (Giu ) is quite a rare unisex forename. The forename Giu is characteristic of Italy, where it is quite a rare unisex name, Uruguay, where it is a rare feminine name, and Belgium, where it is a rare unisex name. Measured by absolute frequency, it is the most numerous in Italy, Indonesia, and Belgium. Likewise, Giu is the last name as well as the forename.
Giu is also a name for the fictitious and mythical characters: Giu , the demon in Mandaeism.