The Killycluggin Stone is a decorated stone, found near the town of Killycluggin, County Cavan, in Ireland. Roughly cone-shaped and covered in Iron Age La Tène designs, it was discovered broken in several pieces, partly buried close to a Bronze Age stone circle, inside which it probably once stood. The stone is now housed in the Cavan County Museum, while an imperfect replica stands near the road about 300 metres from the original site.