Cognomen Кроков (Кроков 
, Krokov 
) , across the world, is a very rare surname. The cognomen Кроков is habitual in Estonia, where it is a rare surname, Russia, where it is a very rare surname, and Ukraine, where it is an extremely rare surname. In absolute terms, it is the most numerous in Russia, the United States, and Estonia.
| VARIANT | COUNTRY |
|---|---|
| Кроков | Ukraine, Russia |
| Krokov | United States, Russia, United Kingdom, Estonia |