Ullerwood Castle is an early medieval castle, possibly a shell keep, in Ringway, England (grid reference SJ8083).[1] The castle is first referred to in 1173, in a document stating Hamo de Masci held the castles of Ullerwood and Dunham.[2] There is no other contemporary documented reference to the castle.[2] Ullerwood Castle has been confused with Watch Hill Castle in nearby Bowdon, but the two are separate castles, though both probably owned by de Masci.[2] The site is underneath a house and surrounded by trees.[3]