Mary of Jesus de León y Delgado, Spanish Dominican lay sister and mystic (d. 1731)
Mary of Jesus de León y Delgado (Spanish: Sor María de Jesús), was a Spanish Dominican lay sister, mystic and visionary, known popularly as "La Siervita" (the Little Servant). She lived a life which was austere and simple, and many miracles were attributed to her, as well as levitation, ecstasy, bilocation, the stigmata, clairvoyance and healing, among others.

De León died with a reputation for sanctity and is one of the most revered of the natives of the Canary Islands, together with Peter of Saint Joseph Betancur and José de Anchieta. The cause for her canonization has been submitted to the Holy See for review.