Ceardach is a small uninhabited[1] island in Loch Lomond, in west central Scotland.

The island lies east of Bucinch and north of Inchcruin.

[2] Ceardach may have been the site of an Iron Age bloomery or furnace for smelting iron ore.[2] Along with neighbour, Bucinch, the island, was donated to the National Trust for Scotland by Col. Charles L. Spencer of Warmanbie, Dumfries, in 1943.

[3] A large variety of trees and other plants grow on the island, from seeds brought by birds, wind and water.

There is a mature if stunted oak tree, willow, holly, briar, and bramble.