Sawtry Abbey was a Cistercian abbey located between Sawtry and Woodwalton in Cambridgeshire, England. The abbey was founded in 1147 by Simon II de Senlis, Earl of Northampton, who was the grandson of Earl Waltheof and Judith, the niece of William the Conqueror who held the manor when the Domesday Survey was compiled. It is the only Cistercian abbey in the county.