Knockruan Loch is a reservoir of the impounding variety, located 2.5 kilometres north of Campbeltown, Scotland, and is one of three lochs supplying water to the town.^[1] The earthfill dam is 1.82 metres high and was completed in 1931.

• List of reservoirs and dams in the United Kingdom

• "Argyll and Bute Council Reservoirs Act 1975 Public Register"