Isabel Le Brun de Pinochet (born 1845, in San Felipe, Chile – flourished 1870s), was a Chilean educationalist who led reform of education for girls in Chile. In her time secondary education for girls was limited and only available through the church. Pinochet opened a private secondary school, later known as Liceo Isabel Le Brun de Pinochet, in Santiago in 1875. This paved the way for a state-funded educational system for both sexes. She not only gave primary instruction, but she also taught secondary school. At the end of the second year of the schools functioning, on December 1, 1876, she decided to send a request to the University Council to ask for the nomination of university commissions to assist to and validate her students' exams.