Cognomen Kosacheva (Косачева 
, Kosacheva 
) , across the world, is quite a rare family name. The family name Kosacheva is characteristic of Russia, where it is quite a rare surname, Belarus, and Kazakhstan, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Косачева | Russia, Bulgaria, Kazakhstan, Belarus, Ukraine |
| Kosacheva | Czechia, Russia, Bulgaria, Ukraine, United States |