The Tolgsk Icon of the Most Holy Mother of God (Толгской иконы Божией Матери), also known as Our Lady of Tolgsk, is a wonder-working icon of the Virgin Mary that appeared to the Bishop of Rostov Prochorus on August 8, 1314. Saint Prochorus later built a Monastery of the Presentation of Mary at Tolga near the site where the icon appeared. The Tolgsk Icon of the Most Holy Theotokos is commemorated on August 8 and July 18.