Family name Деменьтева (Деменьтева 
, Dementeva 
) , throughout the world, is a rare cognomen. The cognomen Деменьтева is habitual in Russia, where it is a very rare surname, Norway, and Georgia. In absolute terms, it is commonest in Russia, Germany, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Деменьтева | Kyrgyzstan, Russia |
| Dementeva | Germany, Norway, Russia, United States, Ukraine |