Cognomen Klyusov (Klyusov 
, Клюсов 
) , across the world, is a rare surname. The family name Klyusov is habitual in Eastern Europe, particularly Russia, where it is a rare surname, Belarus, and Ukraine, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Klyusov | Belarus, United States, Russia |
| Клюсов | Belarus, Ukraine, Russia, Kazakhstan |