Elena Văcărescu, or Hélène Vacaresco (September 21, 1864 in Bucharest – February 17, 1947 in Paris), was a Romanian-French aristocrat writer, twice a laureate of the Académie Française.

She also studied French literature in Paris, where she met Victor Hugo, whom she later mentioned in her memoirs.

She attended courses of philosophy, aesthetics and history and also studied poetry under the guidance of Sully Prudhomme.

She was the only woman to serve with the rank of ambassador (permanent delegate) in the history of the League of Nations.

[5] Just before her death, Văcărescu was a member of the Romanian delegation, headed by Gheorghe Tătărescu, to the Paris Peace Conference, after World War II.