Perth Castle was a 9th-century castle in Perth, Scotland. The Danes attacked the castle in the 9th century. A motte-and-bailey castle was built in the 12th century. The castle was once a royal residence. King Malcolm IV of Scotland was besieged at the castle in 1160 by Ferchar, Earl of Strathearn and five other earls. A flood in 1290 damaged the motte mound and required the castle to be rebuilt. King Edward I of England captured the castle in 1298 and 1303. It was captured by King Robert I of Scotland in 1312. Nothing remains above ground.