Ulnaby is an abandoned village and scheduled ancient monument in the grounds of Ulnaby Hall Farm, near High Coniscliffe, County Durham, England. The toft village was occupied from the late-13th to the 16th century and temporary buildings were erected in the 19th century. Ulnaby Hall farm appears to have been built in the late-16th century, supplanting a high status medieval manorial enclosure associated with the original village. It is thought that the village shrank because of the change from labour-intensive arable farming to pasture, before being abandoned and the site was subsumed into the farm as pasture.