Cognomen Демжанов (Демжанов 
) , throughout the world, is a rare surname. The last name Демжанов is characteristic of Azerbaijan, where it is quite a rare surname, and Kazakhstan, where it is a very rare surname. Very seldom, Демжанов is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Демжанов | Azerbaijan, Kazakhstan |