Surname רייקוב (Raykov 
, Rajkov 
, רייקוב ) , in all the world, is quite a common cognomen. The family name רייקוב is habitual in Bulgaria, where it is quite a common surname, Serbia, and Greece, where it is a rare surname. Not in comparison with a country's population, this name is the most popular in Bulgaria, Serbia, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Raykov | Germany, United States, Bulgaria, Greece, Israel |
| Rajkov | Germany, North Macedonia, Serbia, United States, France |
| רייקוב | Israel |