Anne Thérèse Guérin SP (French pronunciation: [an teʁɛz ɡeʁɛ̃]; 2 October 1798 – 14 May 1856), designated by the Vatican as Saint Theodora, was a French-American saint and the foundress of the Sisters of Providence of Saint Mary-of-the-Woods, a congregation of Catholic sisters at Saint Mary-of-the-Woods, Indiana. Pope John Paul II beatified Guérin on 25 October 1998, and Pope Benedict XVI canonized her a saint of the Catholic Church on 15 October 2006. Mother Guérin's feast day is 3 October, although some calendars list it in the Roman Martyrology as 14 May, her day of death.
Guérin immigrated to Indiana from France in 1840, and became known for her advancement of education, especially in Indiana and in eastern Illinois; founding numerous schools including Saint Mary-of-the-Woods College at Saint Mary-of-the-Woods, Indiana; and for her care of the orphaned, the sick, and the poor of the Diocese of Vincennes, Indiana.