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Globally, Gahn (加恩 , Ган , Gahn ) is quite a rare unisex first name. The first name Gahn is characteristic of Kazakhstan, where it is a rare mostly masculine, but seldom female name, China, where it is a very rare gender-neutral name, and Russia, where it is a very rare boy's name. More frequently, Gahn is the last name as well as the forename.
Gahn is also a name for the fictitious and mythical characters: .