Syningthwaite Priory was a priory in West Yorkshire, England. Syningthwaite is the site of the Cistercian convent of St Mary, founded c. 1150–1160 by Bertram Haget and suppressed in 1535,[1] having been heavily in debt in the early 16th century. At the Dissolution the priory housed nine nuns, the prioress, eight servants and other labourers.[2] The priory site is enclosed by a moat and includes a Chapel Garth.[3]