MacLellan's Castle in the town of Kirkcudbright, southwest Scotland, was built in the late 16th century. It stands in the centre of Kirkcudbright, on the south side of the River Dee which flows into the Solway Firth. The L-plan castle was the residence of the MacLellan family from whom it derived its name. The family sold the castle in 1752, and from 1782 to 1912 it was held by the Earls of Selkirk.