Poulton Priory or the Priory of St Mary was a Gilbertine priory in Poulton, Gloucestershire, England. It was founded as a chantry chapel in 1337 by Sir Thomas Seymour and became a house of Gilbertine canons in 1350. From 1539, with the Dissolution of the Monasteries, the priory was used as the parish church for Poulton.