Tarns is a small farming settlement in the civil parish of Holme St. Cuthbert in Cumbria, United Kingdom. It is located two miles north-east of the village of Mawbray, and twenty-three miles south-west of Carlisle, Cumbria's county town. The B5301 road runs through the settlement, and along that road the town of Silloth-on-Solway is located five-and-a-half miles to the north, and Aspatria four-and-a-half miles to the south-east. Other nearby settlements include Aikshaw, Goodyhills, Jericho, and New Cowper.