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Around the globe, Ιάσων (Iason , Ιάσων , Jasono ) is quite a rare male first name. The given name Ιάσων is habitual in Georgia, where it is quite a common boy's name, Greece, and the United States, where it is an extremely rare dominantly boy's, but uncommonly girly name. Not in comparison with a country's population, the name is most common in Greece, Georgia, and China. Likewise, Ιάσων is the last name as well as the forename.