St Mary's Church, or St Mary's Priory, is in the town centre of Warrington, Cheshire, England. It is recorded in the National Heritage List for England as a designated Grade II listed building, and is an active Catholic church. The parish was established and served by Benedictine monks from Ampleforth Abbey, but following the withdrawal of Ampleforth Abbey from the parish in 2012, it was served by the priest from St Benedict's Church, Warrington. From November 2015, the church has been owned and served by priests from the Priestly Fraternity of Saint Peter (FSSP) as a shrine church dedicated to the celebration of the sacraments of the pre-Vatican II form of the Roman Rite. It is well known for the beauty and reverence of its liturgy.