Surname Derej (Derej 
, Дерей 
) , in the world, is a rare family name. The surname Derej is habitual in Ethiopia, where it is a rare surname, Poland, and Russia. Also, Derej is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Derej | Ethiopia, Indonesia, United States, Poland, India |
| Дерей | Russia, Ukraine |