Dunskey Castle is a ruined, 12th-century tower house or castle, located 0.5 miles (0.80 km) south of the village of Portpatrick, Rhinns, Wigtownshire, on the south-west coast of Scotland.

Portpatrick is a village and civil parish in the historical county of Wigtownshire, Dumfries and Galloway, Scotland. It is located on the west coast of the Rhins of Galloway. The parish is about 4+1⁄2 miles (7 km) in length and 4 miles (6 km) in breadth, covering 9,300 acres (3,800 ha).