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Around the globe, ダイヤ (Dyer , ダイヤ ) is a rare mostly boy's, but uncommonly girly first name. The first name ダイヤ is habitual in Israel, where it is a rare unisex name, the United States, where it is a very rare primarily male, but very seldom feminine name, and Australia, where it is a very rare unisex name. Not in comparison with a country's population, it most frequently occurs in the United States, Israel, and China. Much more frequently, ダイヤ is the last name as well as the forename.
ダイヤ is also a name for the fictitious and mythical characters: .