Aydon Castle is a fortified manor house at Aydon near to the town of Corbridge, Northumberland, England. It is a Scheduled Ancient Monument, and has been designated by English Heritage as a Grade I listed building.
Documentary evidence shows that a timber hall first existed on this site. The manor house was built by Robert de Reymes, a wealthy Suffolk merchant, starting in 1296 AD, adjacent to the steep valley of the Cor Burn. At this time the house consisted of a two-storeyed home with a solar, dining hall and kitchen on the upper floor. In 1305 he obtained a licence to crenellate his property and added battlements and curtain walls.It was captured by the Scots in 1315 and again in 1346. In the middle of the 16th century it was renovated and in the middle of 17th century it was converted into a farm. The building remained in use as a farm until 1966 but has since been restored to its medieval appearance. It is managed by English Heritage.