Narcisa de Jesús Martillo Morán (29 October 1832 – 8 December 1869) was an Ecuadorian Catholic virgin. Martillo was known for her charitable giving and strict devotion to Jesus Christ while living a virginal and austere life of prayer and penance. The death of her parents prompted her to relocate in order to work as a seamstress while caring for the sick and poor. But her devotion to prayer and the mortification of the flesh was strong and it led her to the decision to live as a member of the Third Order of Saint Dominic in Patrocínio, (Peru) in June 1868, where she died on 8 December 1869.

Her cause for sainthood commenced on 27 September 1975, under Pope Paul VI, and she became titled as a Servant of God; while the confirmation of her life of heroic virtue allowed for Pope John Paul II to name her as Venerable on 23 October 1987. Martillo was beatified on 25 October 1992, after the approval of a 1967 miracle. After the confirmation of a miracle attributed to her, Pope Benedict XVI canonised her on 12 October 2008 in Saint Peter's Square.