Yevgeniya Konstantinovna Mravinskaya (Russian: ??????? ?????????????? ??????????), better known by her stage name Yevgeniya or Evgenia Mravina (Russian: ??????? ???????; 16 February [O.S.
4 February] 1864 – 24 October [O.S.
12 October] 1914) was a Russian soprano, a half sister of revolutionary Alexandra Kollontai and the aunt of conductor Yevgeny Mravinsky.