List of hillforts in Ireland-Cedar Herald Index

The landscape of Ireland is dotted with many hillforts. These are classically defined as small hilltop settlements fortified with earthworks, but many are not located on hills, and probably did not function as forts. Their function is unclear; although conventionally interpreted as defensive fortifications and centres of economic political power, there is little evidence that they were ever attacked, and more recent scholarship has suggested that they may be better interpreted as monuments. Many of Ireland's hillforts are promontory forts on the coasts.

County Carlow

Ballinkillin (), contour fort

Killoughterane (), contour fort

County Cavan

Ardamagh (), partial contour fort

Ballyhugh (), promontory fort

Derryragh (), contour fort

Drumacleeskin (), contour fort

Garrysallagh (D'Arcy) (), promontory fort

Glasleck (), promontory fort

Magherintemple (), contour fort

Mullagh (), promontory fort

County Clare

Anneville (), promontory fort

Ardcarney (), contour fort

Ballard (), promontory fort

Ballybreen (), contour fort

Ballyherragh (), promontory fort

Ballyhickey (), level terrain fort

Ballylan (), promontory fort

Ballynahinch (), contour fort

Ballyneillan (), contour fort

Ballysheen More (), hillslope fort

Breaffy South (), promontory fort

Cahercalla (), multiple enclosure hillfort

Caherhurley (), contour fort

Caherrush (), promontory fort

Cappanakilla (), multiple enclosure hillfort

Carrownakilly (), level terrain fort

Castlecrine (), hillslope fort

Clenagh (), contour fort

Cloghaunsavaun (), promontory fort

Clonmoney West (), level terrain fort

Cloonmunnia (), level terrain fort

Corbally (), promontory fort

Crag (), promontory fort

Emlagh (), promontory fort

Enagh East (), contour fort

Farrihy (), promontory fort

Fintra Beg (), promontory fort

Foohagh (), promontory fort

Foymoyle Beg (), multiple enclosure hillfort

Freaghcastle (), promontory fort

Glennageer (), hillslope fort

Keelderry (), contour fort

Kilbaha North (), promontory fort

Kilbaha South (), promontory fort

Kilbaha South (Horse Island) (), promontory fort

Kilcloher (), promontory fort

Kildrum (), contour fort

Killard (), promontory fort

Knockadoon (), contour fort

Lislorkan North (), promontory fort

Mooghaun (), multiple enclosure hillfort

Moveen East (), promontory fort

Moveen West (), promontory fort

Mutton Island (), promontory fort

Quilty (), hillfort

Rathclooney (), contour fort

Tullagh Lower 1 (), contour fort

Tullagh Lower 2 (), hillslope fort

Tullig (), promontory fort

County Cork

Allihies (), promontory fort

Ardaturrish More (), promontory fort

Baile Iarthach Thuaidh (Ballyieragh North) (), promontory fort

Ballycotten (), contour fort

Ballydivlin (), promontory fort

Ballyieragh North (Clear Island) (), promontory fort

Ballymackean (), promontory fort

Ballynacarriga (), promontory fort

Ballyrobin South (), promontory fort

Ballytransna (), promontory fort

Billeragh (), promontory fort

Caherdrinny (), contour fort

Calf Island East (), promontory fort

Canalough (), promontory fort

Carn Tighernagh (), multiple enclosure hillfort

Carrigillihy (), promontory fort

Castlepoint (), promontory fort

Castlewideham (), promontory fort

Claragh (), contour fort

Clashanimud (), multiple enclosure hillfort

Cloddagh (Sherkin Island) (), promontory fort

Cloghfune (), promontory fort

Cloonaghlin West (Bear Island) (), promontory fort

Coolcoulaghta (), promontory fort

Courtmacsherry (), promontory fort

Curragh (), level terrain fort

Derrycreeveen (Bear Island) (), promontory fort

Derryvreeveen (Bere Island) (), promontory fort

Donaghmore (), promontory fort

Donneendermotmore (), promontory fort

Donoure (), promontory fort

Dooneen (), promontory fort

Dooneenmacotter (), promontory fort

Downeen (), promontory fort

Downmacpatrick (Old Head) (), promontory fort