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Worldwide, Rähn (兰 , Rähn , Ряхн ) is a widespread principally feminine, but very seldom boy's forename. The first name Rähn is habitual in Eastern Asia, particularly China, where it is quite a common primarily female, but very seldom boy's name. Likewise, Rähn is the last name as well as the forename.
Rähn is also a name for the fictitious and mythical characters: Shi Lan , the character in Qin's Moon.