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Last name Rejn (Rejn
, Рейн
) , worldwide, is quite a rare cognomen. The cognomen Rejn is habitual in Kazakhstan, where it is quite a rare surname, Russia, where it is a rare surname, and Czechia. In absolute terms, it is the most numerous in Russia, Kazakhstan, and Ukraine. Much less frequently, Rejn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rejn | Czechia, India, Poland, Argentina, Germany |
| Рейн | Kazakhstan, Estonia, Russia, Belarus, Ukraine |