Quothquan (also formerly spelled Couth-Boan, meaning "the beautiful hill";[1] Scottish Gaelic: A’ Choitcheann, pronounced [ə ˈxɔʰtʲçən̪ˠ], meaning "the common"[2]) is a village in Libberton parish, South Lanarkshire, Scotland.

The hill comprises two elements, one is an enclosure to the southeast which is around 400 by 230 feet (120 by 70 m).

The other is a lower larger annexe to the northwest, with double ramparts and a medial ditch which has mostly been filled in.

[3] Quothquan has a village hall near the remains of the graveyard and the ruins of a small church.

[4] A new church in the village was paid for in 1903 by Glasgow shipowner Sir Nathaniel Dunlop, who lived nearby.