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. As the First Lady, in 1990 Oyarzún transformed Fundación Nacional de Ayuda a la Comunidad (FUNACO) into Integra, which helps children in extreme poverty. The next year she inaugurated the Programa de Promoción de la Mujer (PRODEMU). Her sister Mercedes was married to politician Hugo Trivelli.