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, United States, India, Pakistan, Slovakia |
| Barey | Somalia, United States, India, Argentina, France |
| Барей | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Barei | Japan, Botswana, India, Argentina, France |