Surname Rejko (Rejko 
, Режко 
) , around the globe, is a rare cognomen. The family name Rejko is characteristic of Eastern Europe, particularly Slovakia, where it is quite a rare surname, Ukraine, where it is a rare surname, and Russia. Very seldom, Rejko is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rejko | Poland, United States, Slovakia |
| Режко | Russia, Ukraine |