Dementyev (feminine: Dementyeva) is a Russian surname. Notable people with the surname include:
Andrey Dementyev (disambiguation), multiple people
Carolina Dementiev (born 1989), Panamanian model
Nikolay Dementyev (footballer, born 1915) (1915–1994), Soviet football player and coach
Nikolay Dementyev (footballer, born 1983), Russian footballer
Oleg Dementiev (1938–1991), Russian chess master
Peter Demens, born Pyotr Alexeyevitch Dementyev (1850–1919), Russian immigrant, railway owner and one of the founders of the U.S. city of St. Petersburg, Florida.
Roman Dementyev (born 1992), Russian footballer
Yevgeny Dementyev (born 1983), Russian cross-country skier
Elena Dementieva (born 1981), Russian tennis player
Yelizaveta Dementyeva (born 1928), Russian sprint canoer
Anna Dementyeva (born 1994), Russian artistic gymnast
Dementyev Wikipedia (Text) CC BY-SA