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Worldwide, Rejn (Rejn
, Рейн
) is a rare dominantly boy's, but uncommonly feminine first name. The forename Rejn is characteristic of Estonia, where it is quite a rare boy's name, Russia, where it is a very rare boy's name, and India, where it is an extremely rare gender-neutral name. More frequently, Rejn is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Rejn | Czechia, India, Poland, Argentina, Germany |
| Рейн | Kazakhstan, Estonia, Russia, Belarus, Ukraine |
Rejn is also a name for the fictitious and mythical characters: Rayne , the vampire character in BloodRayne.