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Across the world, Hairan (海然 , Hairan ) is quite a rare unisex given name. The given name Hairan is habitual in Philippines, where it is a rare principally feminine, but very seldom male name, Saudi Arabia, where it is a rare male name, and China, where it is a very rare gender-neutral name. Measured by absolute frequency, it is commonest in China, India, and Philippines. Likewise, Hairan is the last name as well as the forename.