Cognomen Estenov (Estenov 
, Естенов 
) , in the world, is a rare family name. The cognomen Estenov is characteristic of Azerbaijan, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and China, where it is an extremely rare surname. Very seldom, Estenov is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Estenov | China, Kazakhstan |
| Естенов | Azerbaijan, Kazakhstan |