Ardhallow Battery is a Palmerston Fort on the slopes of Corlarach Hill around 2 miles (3.2 km) south of Dunoon, in the west of Scotland. Part of the local Clyde Defenses and the Scottish Coastal Defences. The construction contract was awarded to "The Aitkenhead Builders" in 1901 for a price of £16,000. The Battery is a scheduled monument. The site was used in both World Wars and decommissioned in 1956.