Surname Деменьтьева (Деменьтьева 
, Dementeva 
, Dementieva 
) , in the entire world, is a rare family name. The last name Деменьтьева is habitual in Georgia, where it is a rare surname, Czechia, and Bulgaria. In absolute terms, this name is the most popular in Russia, Czechia, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Деменьтьева | Russia, Kyrgyzstan |
| Dementeva | Russia, Georgia, Ukraine, United States, Norway |
| Dementieva | Czechia, Russia, Bulgaria, Georgia, United States |