Elena Theodorini (or Teodorini; née Ellen Morton or Monzunu; 25 March 1857 – 27 February 1926) was a Romanian soprano and mezzo-soprano.
Born in Craiova, Principality of Wallachia, into a family of Romanian actors of Greek descent, she began to study singing and piano at the Milan Conservatory.
In 1879, she began her career as a soprano in La fille du regiment at the Teatro dal Verme in Milan.
She was equally comfortable in dramatic or lyrical roles, mezzo-soprano or contralto, thanks to the exceptional extension of her voice.
Theodorini died in 1926 in Bucharest and was buried in the city's Sfânta Vineri Cemetery.