Saint Hyacintha Mariscotti, T.O.R., (†1640) was an Italian nun of the Third Order Regular of St. Francis. Hyacintha was beatified by Pope Benedict XIII in 1726, and canonized on 14 May 1807 by Pope Pius VII. Today her remains are preserved for veneration in the church of her now-defunct monastery, which today bears her name. Hyachintha's feast day is celebrated on 30 January by the Third Order of St. Francis.