Ardcarn Mound is a mound and ringfort and National Monument located in County Roscommon, Ireland.

[1][2] Ardcarn Mound is located about 6 km (3.7 mi) east of Boyle and 3 km (1.9 mi) south of Lough Key.

[3] Ardcarn Mound is a bowl barrow.

Immediately to the west of this is a trivallate ringfort with souterrain, and to the south of that is a simple rath.

This article relating to archaeology in Ireland is a stub.