Buckton Castle was a medieval enclosure castle near Carrbrook in Stalybridge, Greater Manchester, England. It was surrounded by a 2.8-metre-wide (9 ft) stone curtain wall and a ditch 10 metres (33 ft) wide by 6 metres (20 ft) deep. Buckton is one of the earliest stone castles in North West England and only survives as buried remains overgrown with heather and peat. It was most likely built and demolished in the 12th century. The earliest surviving record of the site dates from 1360, by which time it was lying derelict. The few finds retrieved during archaeological investigations indicate that Buckton Castle may not have been completed.
In the 16th century, the site may have been used as a beacon for the Pilgrimage of Grace. During the 18th century, the castle was of interest to treasure hunters following rumours that gold and silver had been discovered at Buckton. The site was used as an anti-aircraft decoy site during the Second World War. Between 1996 and 2010, Buckton Castle was investigated by archaeologists as part of the Tameside Archaeology Survey, first by the University of Manchester Archaeological Unit then the University of Salford's Centre for Applied Archaeology. The project involved community archaeology, and more than 60 volunteers took part. The castle, close to the Buckton Vale Quarry, is a Scheduled Ancient Monument.