Leonor Oyarzún Ivanovic (10 March 1919 – 21 January 2022) was a Chilean family therapist and member of the Christian Democratic Party (PDC).

She served as the First Lady of Chile from 1990 until 1994 as the wife of President Patricio Aylwin.

She was born in 1919 in Temuco, the daughter of Manuel Oyarzún Lorca and Ana Ivanović Roccatagliata.

She married Aylwin on 29 September 1948 and they have five children: Isabel, Miguel, José Antonio, Juan Francisco, and Mariana.

[1] As the First Lady, in 1990 Oyarzún transformed Fundación Nacional de Ayuda a la Comunidad (FUNACO) into Integra, which helps children in extreme poverty.