The Court cairn is a variety of megalithic chamber tomb found in south west Scotland and central and northern Ireland. They are alternatively known as Clyde Carlingford tombs horned cairns or court tombs. The term was devised by the Irish archaeologist, Rúaidhri De Valera in the 1960s to cover a variety of different tombs that had certain elements in common.

The Scottish tomb builders generally favoured inhumation whilst in Ireland, prior cremation was preferred for the burials they placed in the tombs. Most court cairns appear to have been built in the early Neolithic, around 3500 BC but many remained in use until as late as the Bronze Age transition c. 2200 BC.

A long rectangular or trapezoid cairn covered several burial chambers, with an elongated, curved outer area at the entrance called the court or forecourt. In plan this has an appearance of a claw or set of horns and is the characteristic feature of the tombs. A kerb surrounded the cairn. The chambers themselves were sections of a gallery, separated by jambs or jambs and sills. Some tombs have additional side chambers making them Transepted gallery graves. Others have forecourts and entrances on opposite sides of the cairn and are known as double court cairns

They share architectural features with other forms of gallery graves such as the Severn-Cotswold tombs of south west Britain, implying some form of connection between the builders of the two types.

See also Chambered cairn.