A chambered cairn is a burial monument, usually constructed during the Neolithic, consisting of a sizeable chamber around and over which a cairn of stones was constructed. Some chambered cairns are also passage-graves. They are found throughout Britain and Ireland, with the largest number in Scotland.

A cairn is a human-made pile of stones raised for a purpose, usually as a marker or as a burial mound. The word cairn comes from the Scottish Gaelic: càrn.