West Dereham Abbey was an abbey in Norfolk, England. St Mary’s Abbey, West Dereham, was founded in 1188 by Hubert Walter, Dean of York, at his birthplace. It was to be a daughter house of Welbeck Abbey, Nottinghamshire, for canons regular of the Premonstratensian order. The canons were to pray for the souls of the founder and his parents, his brothers and sisters and all his relatives and friends. It was surrounded by a moat and was to become one of the larger religious houses in Norfolk, with up to twenty six canons in the late 13th century, and was also quite wealthy, with extensive estates.