Family name Kozmov (Kozmov 
, Козмов 
, Козьмов 
) , in all the world, is a rare last name. The last name Kozmov is habitual in Bulgaria, where it is a rare surname, Greece, and Russia, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kozmov | Russia, Israel, Greece |
| Козмов | Kyrgyzstan, Russia, Bulgaria, Ukraine |
| Козьмов | Russia, Kazakhstan, Ukraine |