Cognomen Барей (Barej 
, Barey 
, Барей 
) , all around the world, is a common last name. The surname Барей is habitual in Botswana, where it is quite a rare surname, India, and Slovakia. Measured by absolute frequency, it is commonest in India, Japan, and Poland. Very seldom, Барей is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Barej | Poland, India, United States, Pakistan, Slovakia |
| Barey | France, Argentina, India, United States, Somalia |
| Барей | Kazakhstan, Belarus, Kyrgyzstan, Russia, Ukraine |
| Barei | Botswana, France, Argentina, India, Japan |