Cognomen Kuznjecov (Kuznjecov 
) , across the world, is a very rare family name. The family name Kuznjecov is characteristic of Southern Europe, particularly Montenegro, where it is quite a rare surname, and Croatia, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kuznjecov | Montenegro, Croatia |
| konstantin kuznjecov US (b. 1895) |
|