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Across the world, Reyn (Reyn
, Рейн
, Реин
) is a rare unisex forename. The given name Reyn is characteristic of Estonia, where it is quite a rare boy's name, United Arab Emirates, where it is a rare female name, and Kuwait. Measured by absolute frequency, it is commonest in Indonesia, Russia, and the United States. Also, Reyn is the last name as well as the forename.
Reyn is also a name for the fictitious and mythical characters: Rayne , the vampire character in BloodRayne.