Cognomen Karolev (Karolev 
, Каролев 
) , across the world, is a rare last name. The surname Karolev is habitual in Bulgaria, where it is quite a rare surname, Spain, where it is a very rare surname, and South Africa, where it is an extremely rare surname. In absolute terms, this name is the most popular in Bulgaria, Spain, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Karolev | United Kingdom, United States, Spain, South Africa, Bulgaria |
| Каролев | Russia, Bulgaria |
| svilen stojanov karolev (b. 1954) |
|