Ewyas Harold Castle was a castle in the village of Ewyas Harold in Herefordshire, England. The first castle on the site is believed to be one of the very few which were built before the Norman conquest under the Saxons, probably in 1048, on the site of an earlier fortification, possibly by Osbern Pentecost. It was a motte and bailey castle overlooking the Dulas Brook. In 1052 the original castle was destroyed either on the orders of Earl Godwin or by the Welsh in a raid. In 1100 a priory was founded within the bailey of the castle.