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Hillforts in Republic of Ireland

Republic of Ireland has 475 hillforts in the Atlas of Hillforts of Britain and Ireland. Open a county or unitary authority, or filter the full national list and map.

Counties and unitary authorities

• Carlow2 sites
• Cavan8 sites
• Clare51 sites
• Clare (Horse Island)1 sites
• Clare (Mutton Island)2 sites
• Cool West (Iveragh Peninsula)1 sites
• Cork61 sites
• Cork (Bear Island)3 sites
• Cork (Calf Island East)1 sites
• Cork (Cape Clear)1 sites
• Cork (Clear Island)3 sites
• Cork (Sherkin Island)3 sites
• Donegal38 sites
• Donegal (Inishdooey)1 sites
• Donegal (Tory Island)1 sites
• Dublin10 sites
• Fawnmore (Inishbofin)1 sites
• Galway16 sites
• Galway (High Island)1 sites
• Galway (Inis Mór)1 sites
• Galway (Inishark)1 sites
• Galway (Inishbofin)2 sites
• Kerry39 sites
• Kerry (Iveragh Peninsula)3 sites
• Kildare4 sites
• Kilkenny4 sites
• Laois3 sites
• Leitrim6 sites
• Limerick12 sites
• Longford1 sites
• Louth5 sites
• Mayo53 sites
• Mayo (Achill Beg)3 sites
• Mayo (Achill Island)8 sites
• Mayo (Clare Island)6 sites
• Mayo (Duvillaun More)1 sites
• Mayo (Inishturk)1 sites
• Mayo (Iniskea South)1 sites
• Meath6 sites
• Monaghan1 sites
• Offaly6 sites
• Roscommon18 sites
• Sligo19 sites
• Tipperary15 sites
• Waterford25 sites
• Westmeath1 sites
• Westquarter (Inishbofin)1 sites
• Wexford7 sites
• Wexford (Saltee Island Great)1 sites
• Wicklow16 sites

Search

Type

Contour Partial contour Promontory Hillslope Level terrain Marsh Multiple enclosure

Condition

Extant Cropmark Likely destroyed

Morphology

Univallate Bivallate Multivallate

Scheduled monument

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Sites

• Achadh GhlaisênMayo · Extant · Promontory fort
• Achill BegMayo (Achill Beg) · Extant · Promontory fort
• Achill BegMayo (Achill Beg) · Extant · Promontory fort · Multiple enclosure
• Achill Beg IslandMayo (Achill Beg) · Extant · Promontory fort
• Aghadoon (Achadh Dúin)Mayo · Extant · Promontory fort
• Aghaglasheen (Achadh Ghlaisên)Mayo · Extant · Promontory fort
• Aghaglasheen (Achadh Ghlaisên)Mayo · Extant · Promontory fort
• AhennyTipperary · Extant · Likely destroyed · Contour fort
• Alaghee/Alachaí MórKerry · Extant · Promontory fort
• AllihiesCork · Likely destroyed · Promontory fort
• An Bhraid OchtarachDonegal · Extant · Promontory fort
• An MachaireDonegal · Extant · Promontory fort
• AnnaghRoscommon · Extant · Promontory fort
• Annagh (An Teanach)Mayo · Extant · Promontory fort
• Annagh (An Teanach)Mayo · Extant · Promontory fort
• Annagh (An Teannach)Mayo · Extant · Promontory fort
• AnnestownWaterford · Extant · Likely destroyed · Promontory fort
• AnnevilleClare · Extant · Promontory fort
• ArdamaghCavan · Extant · Likely destroyed · Partial contour fort
• Ardaturrish MoreCork · Extant · Likely destroyed · Promontory fort
• ArdcarneyClare · Extant · Likely destroyed · Contour fort
• AthgoeDublin · Extant · Contour fort
• Aughernagailliagh (Eoghair na Gcaille)Mayo · Extant · Promontory fort
• Aughernagalliagh (Eochair na Gcailleach)Mayo · Extant · Promontory fort
• Baile Iarthach Thuaidh (Ballyieragh North)Cork (Cape Clear) · Likely destroyed · Promontory fort
• BallardClare · Extant · Promontory fort
• BallardClare · Extant · Likely destroyed · Promontory fort
• Balleeghan LowerDonegal · Extant · Contour fort
• BallincurraTipperary · Extant · Contour fort
• BallinkillinCarlow · Extant · Likely destroyed · Contour fort
• BallinteskinLouth · Extant · Promontory fort
• BallinwingLeitrim · Extant · Promontory fort
• BallybreenClare · Extant · Likely destroyed · Contour fort
• BallybroonyMayo · Extant · Contour fort
• BallybuckleyWexford · Extant · Contour fort
• BallybunionKerry · Extant · Likely destroyed · Promontory fort
• BallycahillLimerick · Cropmark · Likely destroyed · Promontory fort
• BallyconnellSligo · Likely destroyed · Promontory fort
• BallycottenCork · Likely destroyed · Contour fort
• BallycurraghOffaly · Extant · Hillslope fort · Multiple enclosure
• BallydivlinCork · Likely destroyed · Promontory fort
• Ballyglass (An Baile Glas)Mayo · Extant · Promontory fort
• Ballyglass (An Baile Glas)Mayo · Likely destroyed · Promontory fort
• Ballyglass (An Baile Glas)Mayo · Extant · Promontory fort
• Ballyglass (An Baile Glas)Mayo · Extant · Promontory fort
• BallygormanDonegal · Extant · Promontory fort
• BallygormanDonegal · Extant · Promontory fort
• BallygormanDonegal · Likely destroyed · Promontory fort
• Ballyheer (Inishturk)Mayo (Inishturk) · Extant · Promontory fort
• BallyherraghClare · Extant · Promontory fort
• BallyhickeyClare · Extant · Likely destroyed · Level-terrain fort
• BallyhogeWexford · Cropmark · Likely destroyed · Promontory fort
• BallyhughCavan · Extant · Promontory fort
• Ballyickeen Commons (Coimên Bhaile Cên)Kerry · Extant · Promontory fort
• Ballyieragh North (Clear Island)Cork (Clear Island) · Likely destroyed · Promontory fort
• BallykilleenOffaly · Extant · Contour fort
• BallylanClare · Likely destroyed · Promontory fort
• BallylinLimerick · Extant · Likely destroyed · Contour fort · Multiple enclosure
• Ballymacadoyle (Baile Mhic and Daill)Kerry · Extant · Promontory fort
• BallymackeanCork · Extant · Promontory fort
• BallymacmurraghOffaly · Extant · Contour fort
• BallymartinMayo · Extant · Likely destroyed · Level-terrain fort
• BallymoreRoscommon · Extant · Promontory fort
• Ballymore West (Baile Móir Thiar)Kerry · Extant · Promontory fort
• Ballymore West (Baile Móir Thiar)Kerry · Extant · Promontory fort
• BallynacarrigaCork · Extant · Promontory fort
• BallynahardaWaterford · Extant · Promontory fort
• BallynahinchClare · Likely destroyed · Contour fort
• Ballynahow (Baile na Habha)Kerry · Extant · Promontory fort
• Ballynakilly (Inch Island)Donegal · Extant · Promontory fort
• Ballynamona LowerWaterford · Extant · Promontory fort
• BallynamrossaghTipperary · Extant · Contour fort
• BallynarridWaterford · Extant · Promontory fort
• BallynarridWaterford · Likely destroyed · Promontory fort
• BallynarryDonegal · Extant · Contour fort
• BallyneetyTipperary · Extant · Contour fort
• BallyneillanClare · Extant · Contour fort
• Ballyoughteragh South (Baile Uachtarach Thiar)Kerry · Extant · Promontory fort · Multiple enclosure
• Ballyrobin SouthCork · Extant · Promontory fort
• Ballysheen MoreClare · Extant · Hillslope fort
• Ballytoothy More (Clare Island)Mayo (Clare Island) · Extant · Promontory fort
• Ballytoothy More (Clare Island)Mayo (Clare Island) · Extant · Promontory fort
• BallytransnaCork · Extant · Promontory fort
• BallyvoonyWaterford · Extant · Likely destroyed · Promontory fort
• BarrowKerry · Extant · Likely destroyed · Promontory fort
• BeaghRoscommon · Likely destroyed · Promontory fort
• Beal MiddleKerry · Extant · Promontory fort
• Belderg More (Béal Deirg Mór)Mayo · Extant · Promontory fort
• BelmontGalway · Extant · Contour fort
• BigwoodWestmeath · Extant · Contour fort
• BilleraghCork · Extant · Promontory fort
• BoeeshilLeitrim · Extant · Likely destroyed · Contour fort
• BoleyLaois · Extant · Likely destroyed · Contour fort · Multiple enclosure
• Brandon HillKilkenny · Likely destroyed · Hillslope fort
• Breaffy SouthClare · Extant · Promontory fort
• Brewel WestKildare · Extant · Contour fort
• Brodullagh SouthMayo · Extant · Likely destroyed · Contour fort · Multiple enclosure
• Bromore WestKerry · Extant · Promontory fort
• Brusselstown RingWicklow · Extant · Likely destroyed · Contour fort · Multiple enclosure
• Béal Deirg MórMayo · Promontory fort
• Béal Deirg MórMayo · Extant · Promontory fort
• Béal Deirg MórMayo · Extant · Promontory fort
• CahercallaClare · Extant · Likely destroyed · Hillslope fort · Multiple enclosure
• CaherconreeKerry · Extant · Promontory fort · Multiple enclosure
• CaherdrinnyCork · Extant · Likely destroyed · Contour fort
• CaherhurleyClare · Extant · Contour fort
• CaherrushClare · Likely destroyed · Promontory fort
• Calf Island EastCork (Calf Island East) · Likely destroyed · Promontory fort
• CanaloughCork · Likely destroyed · Promontory fort
• CapardLaois · Extant · Contour fort
• CappanakillaClare · Extant · Contour fort · Multiple enclosure
• Carn TighernaghCork · Extant · Likely destroyed · Contour fort · Multiple enclosure
• CarrickahillaWaterford · Extant · Partial contour fort
• CarrickspringanMeath · Extant · Promontory fort
• CarrigillihyCork · Extant · Promontory fort
• CarrowgarveRoscommon · Cropmark · Contour fort
• Carrowgarve (An Cheathrú Gharbh)Mayo (Achill Island) · Extant · Likely destroyed · Promontory fort
• CarrowgilhoolySligo · Extant · Likely destroyed · Level-terrain fort
• CarrowkeelRoscommon · Extant · Contour fort
• CarrowkeelRoscommon · Cropmark · Level-terrain fort
• CarrowmoranSligo · Extant · Promontory fort
• CarrowmoranSligo · Extant · Promontory fort
• CarrowmoreDonegal · Extant · Contour fort
• Carrownaglogh (Ceathrú na gCloch)Mayo · Extant · Promontory fort
• CarrownakillyClare · Extant · Level-terrain fort
• CarrownderryGalway · Extant · Partial contour fort
• CarrownrushSligo · Extant · Contour fort · Multiple enclosure
• CarrownrushSligo · Extant · Promontory fort
• CarrownrushSligo · Extant · Promontory fort
• CarthageDonegal · Extant · Promontory fort
• CarthageDonegal · Extant · Promontory fort
• CarthageDonegal · Extant · Promontory fort
• Castle GaleLimerick · Extant · Promontory fort
• CastlecarraMayo · Extant · Promontory fort
• CastlecrineClare · Extant · Hillslope fort
• CastlepointCork · Likely destroyed · Promontory fort
• CastlerubyRoscommon · Likely destroyed · Hillslope fort
• Castletenison DemesneRoscommon · Extant · Promontory fort
• CastlewidehamCork · Extant · Promontory fort
• Ceathrú na gClochMayo · Extant · Promontory fort
• ChurchacresRoscommon · Extant · Promontory fort
• Cill GhallagáinMayo · Extant · Promontory fort
• Cill GhallagáinMayo · Extant · Promontory fort
• Claggan (Achill Island)Mayo (Achill Island) · Extant · Promontory fort
• ClaraghCork · Extant · Likely destroyed · Contour fort
• ClashanimudCork · Extant · Partial contour fort · Multiple enclosure
• ClashmelconKerry · Extant · Promontory fort
• ClashmelconKerry · Likely destroyed · Promontory fort
• ClenaghClare · Extant · Contour fort
• Cloddagh (Sherkin Island)Cork (Sherkin Island) · Extant · Promontory fort
• Cloghanecanuig (Clochán Ceannúigh)Kerry (Iveragh Peninsula) · Extant · Likely destroyed · Promontory fort
• CloghansMayo · Likely destroyed · Promontory fort
• CloghaunsavaunClare · Extant · Promontory fort
• Clogher BegSligo · Extant · Promontory fort
• CloghfuneCork · Extant · Likely destroyed · Promontory fort
• CloghfuneCork · Extant · Promontory fort
• ClonmantaghKilkenny · Extant · Contour fort · Level-terrain fort
• Clonmoney WestClare · Extant · Likely destroyed · Level-terrain fort
• Cloonaghlin West (Bear Island)Cork (Bear Island) · Extant · Promontory fort
• Cloonamore (Cluana Mór)Galway (Inishbofin) · Extant · Likely destroyed · Promontory fort
• ClooncahGalway · Likely destroyed · Contour fort
• CloonmunniaClare · Extant · Level-terrain fort
• ClopookLaois · Extant · Contour fort · Multiple enclosure
• CluttahinaWaterford · Extant · Cropmark · Likely destroyed · Contour fort · Multiple enclosure
• Coarha BegKerry · Likely destroyed · Promontory fort
• Commons of LloydsMeath · Extant · Likely destroyed · Contour fort · Multiple enclosure
• Conach R_IdhMayo · Extant · Promontory fort
• Cool East (An Chúil Thoir)Kerry (Iveragh Peninsula) · Extant · Promontory fort
• Cool West (An Chúil Thiar)Cool West (Iveragh Peninsula) · Extant · Promontory fort
• CoolagadWicklow · Extant · Partial contour fort
• CoolcoulaghtaCork · Extant · Promontory fort
• CoolumWaterford · Extant · Promontory fort
• CorballyClare · Extant · Promontory fort
• CorballyClare · Extant · Promontory fort
• Coumeenoole North/Com Dhêneol ThuaidhKerry · Extant · Promontory fort
• Courthoyle NewWexford · Extant · Contour fort
• CourtmacsherryCork · Extant · Promontory fort
• CragClare · Likely destroyed · Promontory fort
• CrislaghmoreDonegal · Extant · Contour fort
• CroaghrossDonegal · Extant · Promontory fort
• CuloortDonegal · Extant · Promontory fort
• Cumber LowerOffaly · Likely destroyed · Contour fort · Multiple enclosure
• CurraghCork · Extant · Level-terrain fort
• Curragh (An Curragh)Galway · Extant · Promontory fort
• CurraghadobbinTipperary · Extant · Likely destroyed · Partial contour fort · Multiple enclosure
• Dalkey IslandDublin · Extant · Promontory fort
• Derrycreeveen (Bear Island)Cork (Bear Island) · Likely destroyed · Promontory fort
• Derrylahan (Doire Leathan)Donegal · Extant · Likely destroyed · Promontory fort
• DerryraghCavan · Extant · Contour fort
• Derryvreeveen (Bere Island)Cork · Extant · Promontory fort
• DonaghintraineSligo · Extant · Promontory fort
• DonaghmoreCork · Extant · Promontory fort
• DonneendermotmoreCork · Extant · Promontory fort
• DonoureCork · Likely destroyed · Promontory fort
• Dooega (Dumha Ñige-Achill Island)Mayo (Achill Island) · Extant · Promontory fort
• Dooega (Dumha Ñige-Achill Island)Mayo (Achill Island) · Extant · Promontory fort
• Dooega (Dumha Ñige-Achill Island)Mayo (Achill Island) · Extant · Likely destroyed · Promontory fort
• Doogort East (Achill Island)Mayo (Achill Island) · Likely destroyed · Promontory fort
• Doogort East (Achill Island)Mayo (Achill Island) · Extant · Promontory fort
• DoonDonegal · Extant · Promontory fort
• Doon EastKerry · Extant · Promontory fort
• Doon WestKerry · Extant · Likely destroyed · Promontory fort
• Doon WestKerry · Extant · Promontory fort
• Doonalt (Dún Alt)Donegal · Extant · Promontory fort
• DooncartonMayo · Extant · Promontory fort
• DooneenCork · Extant · Promontory fort
• DooneenmacotterCork · Extant · Promontory fort
• Doonmanagh (Dún Meánach)Kerry · Extant · Promontory fort
• Doonsheane (Dún Sián)Kerry · Extant · Promontory fort
• Doonties Commons (Coimên Nd–Nta)Kerry · Extant · Promontory fort
• DoontruskMayo · Extant · Promontory fort
• Doorgort East (Achill Island)Mayo (Achill Island) · Extant · Likely destroyed · Promontory fort
• DowneenCork · Likely destroyed · Promontory fort
• Downmacpatrick (Old Head)Cork · Extant · Promontory fort
• DownshillWicklow · Extant · Likely destroyed · Partial contour fort
• DrombrowCork · Extant · Promontory fort
• DromcloghCork · Extant · Likely destroyed · Promontory fort
• DrumacleeskinCavan · Extant · Contour fort
• DrumacrinDonegal · Likely destroyed · Promontory fort
• DrumanaghDublin · Extant · Promontory fort
• DrumnagranshySligo · Extant · Partial contour fort
• DrumnasillaghDonegal · Extant · Promontory fort
• DunbeaconCork · Extant · Promontory fort
• DunbogeyCork · Extant · Promontory fort
• DunbrattinWaterford · Extant · Promontory fort
• DunbrattinWaterford · Extant · Promontory fort
• DuncartonMayo · Extant · Promontory fort
• DundeadyCork · Likely destroyed · Promontory fort
• DundermotRoscommon · Extant · Likely destroyed · Promontory fort
• DunglaraLimerick · Extant · Hillslope fort
• DunloughCork · Likely destroyed · Promontory fort
• Dunmore (Shanooan)Waterford · Likely destroyed · Promontory fort
• Dunmurry WestKildare · Extant · Partial contour fort
• DunnycoveCork · Extant · Promontory fort
• DunowenCork · Extant · Promontory fort
• DunworlyCork · Extant · Likely destroyed · Promontory fort
• DunworlyCork · Extant · Promontory fort
• Duvillaun MoreMayo (Duvillaun More) · Extant · Promontory fort
• Dún AonghasaGalway · Extant · Promontory fort
• EarlsparkGalway · Likely destroyed · Contour fort
• EmlaghClare · Cropmark · Likely destroyed · Promontory fort
• Emlagh (An Timleach)Kerry · Extant · Promontory fort
• Enagh EastClare · Likely destroyed · Contour fort
• Errarooey More (Oirear Dhumhaí Mór)Donegal · Extant · Promontory fort
• ErrewMayo · Likely destroyed · Promontory fort
• FahaKerry · Extant · Likely destroyed · Promontory fort · Multiple enclosure
• Fahan/Fán (Dún Beg)Kerry · Extant · Likely destroyed · Promontory fort
• Fahy (An Fhaiche)Galway · Extant · Promontory fort
• FarranacoushCork (Sherkin Island) · Extant · Promontory fort
• FarransheaTipperary · Extant · Likely destroyed · Contour fort
• FarrihyClare · Extant · Promontory fort
• FawnlionLeitrim · Extant · Promontory fort
• Fawnmore (An Fán Mór)Fawnmore (Inishbofin) · Extant · Promontory fort
• Fintra BegClare · Extant · Promontory fort
• Foilnageragh (Faill na Gcaoireach)Kerry (Iveragh Peninsula) · Extant · Promontory fort
• FoohaghClare · Extant · Promontory fort
• Foymoyle BegClare · Extant · Contour fort · Multiple enclosure
• FreaghcastleClare · Extant · Promontory fort
• Freestone HillKilkenny · Extant · Partial contour fort
• Friarstown 1Limerick · Extant · Contour fort
• Friarstown 2Limerick · Extant · Contour fort
• GarranesCork · Likely destroyed · Promontory fort
• Garrangrena LowerTipperary · Extant · Contour fort
• GarrarusWaterford · Extant · Promontory fort
• GarristownDublin · Extant · Contour fort
• Garrysallagh (D'Arcy)Cavan · Likely destroyed · Promontory fort
• Gladree (An Gileadraigh)Mayo · Extant · Promontory fort
• Gladree (An Gileadraigh)Mayo · Extant · Promontory fort
• GlanbaneKerry · Likely destroyed · Contour fort · Multiple enclosure
• GlasbolieDonegal · Extant · Likely destroyed · Contour fort
• GlasleckCavan · Extant · Likely destroyed · Promontory fort
• Gleann LasraMayo · Likely destroyed · Promontory fort
• GleannlasraMayo · Extant · Promontory fort
• Glen (Clare Island)Mayo (Clare Island) · Extant · Promontory fort
• Glen (Richards)Wexford · Extant · Promontory fort
• GlengadDonegal · Extant · Promontory fort
• Glenlara (Gleann Lára)Mayo · Extant · Promontory fort
• GlennageerClare · Extant · Hillslope fort
• GlenphucaCork · Extant · Contour fort
• Gort An ChoirceDonegal · Extant · Promontory fort
• GortacrossigCork · Extant · Promontory fort
• GortbrackMayo · Extant · Promontory fort
• Gortnatraw North (Gort Na Trá)Donegal · Extant · Promontory fort
• GouladooCork · Extant · Promontory fort
• GranardLongford · Extant · Likely destroyed · Contour fort
• GrannaghGalway · Likely destroyed · Contour fort
• GreaghnagloghRoscommon · Extant · Promontory fort
• Greenane (Bear Island)Cork (Bear Island) · Extant · Promontory fort
• GreenvilleCork · Extant · Contour fort
• Grianán of AileachDonegal · Extant · Contour fort · Multiple enclosure
• Hazelwood DemesneSligo · Extant · Promontory fort
• High Island (Ardoileán)Galway (High Island) · Extant · Likely destroyed · Promontory fort
• Horse IslandMayo · Likely destroyed · Promontory fort
• HowthDublin · Extant · Likely destroyed · Promontory fort · Multiple enclosure
• HowthDublin · Extant · Contour fort
• HughstownKildare · Likely destroyed · Contour fort · Multiple enclosure
• IllionDonegal · Extant · Promontory fort
• Inishark (Inis Airc)Galway · Extant · Promontory fort
• Inishdooey (Oileán Dúiche)Donegal (Inishdooey) · Extant · Promontory fort
• InishsharkGalway (Inishark) · Extant · Likely destroyed · Promontory fort
• Iniskea SouthMayo (Iniskea South) · Extant · Promontory fort
• IslandhubbockWaterford · Extant · Likely destroyed · Promontory fort
• Islandikane East/Islandikane SouthWaterford · Extant · Promontory fort
• KaneLouth · Extant · Promontory fort
• KedrahTipperary · Extant · Contour fort
• KeelderryClare · Extant · Contour fort
• Kilbaha NorthClare · Extant · Promontory fort
• Kilbaha SouthClare · Extant · Promontory fort
• Kilbaha SouthClare · Extant · Promontory fort
• Kilbaha SouthClare · Likely destroyed · Promontory fort
• Kilbaha South (Horse Island)Clare (Horse Island) · Extant · Promontory fort
• KilbraghTipperary · Extant · Likely destroyed · Contour fort · Multiple enclosure
• KilcashelWicklow · Extant · Hillslope fort
• KilcatherineCork · Likely destroyed · Promontory fort
• KilcloherClare · Extant · Promontory fort
• KildrumClare · Extant · Contour fort
• Kilfarnoge (Cill Fearnóg)Kerry · Extant · Promontory fort
• KilfarrasyWaterford · Extant · Promontory fort
• Kilgalligan (Cill Ghallagáin)Mayo · Extant · Promontory fort
• KilkillogueSligo · Extant · Promontory fort
• Kill HillKildare · Extant · Likely destroyed · Contour fort · Multiple enclosure
• KillardClare · Likely destroyed · Promontory fort
• KilleaghCork · Extant · Promontory fort
• Killeany (Cill Ñinne)Galway (Inis Mór) · Extant · Promontory fort
• KilleenadeemaRoscommon · Likely destroyed · Contour fort · Multiple enclosure
• KilloughteraneCarlow · Extant · Contour fort
• KilloveenogeCork · Extant · Promontory fort
• KillowenOffaly · Extant · Partial contour fort
• Kilnamack EastWaterford · Extant · Contour fort
• Kilpoole UpperWicklow · Cropmark · Promontory fort
• KilranlaghWicklow · Extant · Likely destroyed · Contour fort
• KilriffinMeath · Extant · Likely destroyed · Contour fort
• KilskeaghGalway · Extant · Contour fort · Multiple enclosure
• KinnadoohyMayo · Extant · Likely destroyed · Promontory fort
• KinureCork · Likely destroyed · Promontory fort
• KncoklaneSligo · Extant · Promontory fort · Multiple enclosure
• KnighTipperary · Likely destroyed · Contour fort · Multiple enclosure
• KnockacarrigeenGalway · Extant · Partial contour fort
• KnockadigeenTipperary · Extant · Contour fort
• KnockadoonClare · Extant · Contour fort
• Knockadoon (Warren)Cork · Extant · Promontory fort
• KnockaghLouth · Extant · Promontory fort
• KnockanacuigKerry · Extant · Likely destroyed · Contour fort
• KnockatrellaneWaterford · Extant · Contour fort
• KnockaunMayo · Extant · Promontory fort
• KnockaunMayo · Extant · Promontory fort
• KnockbrackDublin · Cropmark · Likely destroyed · Contour fort
• KnockeenWicklow · Extant · Likely destroyed · Contour fort · Multiple enclosure
• Knockfola (Cnoc Fola)Donegal · Extant · Promontory fort
• Knockglass More (An Cnoc Glas Mór)Kerry · Extant · Promontory fort
• KnockmahonWaterford · Extant · Promontory fort
• KnocknacarraghGalway · Likely destroyed · Contour fort
• Knocknalina (Cnocán na Líne)Mayo · Extant · Promontory fort
• KnocknasheeSligo · Extant · Contour fort · Multiple enclosure
• KnocknasnaaLimerick · Likely destroyed · Multiple enclosure
• KnockroeLimerick · Extant · Contour fort
• KnocksounaLimerick · Extant · Likely destroyed · Contour fort · Multiple enclosure
• KnowthMeath · Extant · Likely destroyed · Promontory fort
• KnoxsparkSligo · Extant · Promontory fort
• LackavaunCork · Extant · Promontory fort
• LaghteaTipperary · Extant · Contour fort
• Laghtmurragha (Leacht Mhurchaidh)Mayo · Extant · Promontory fort
• LahanaghSligo · Extant · Promontory fort
• LahardCork · Extant · Promontory fort
• Lambay IslandDublin · Extant · Promontory fort
• Lambay IslandDublin · Extant · Promontory fort
• LargysillaghDonegal · Extant · Promontory fort
• Lecarrow (Clare Island)Mayo (Clare Island) · Extant · Promontory fort
• Letter Beg (Leitir Beag)Mayo · Extant · Promontory fort
• LiathleitirGalway · Extant
• LinsfortDonegal · Extant · Promontory fort
• LisbaneLimerick · Extant · Likely destroyed · Contour fort · Multiple enclosure
• Lislorkan NorthClare · Likely destroyed · Promontory fort
• LissTipperary · Extant · Likely destroyed · Contour fort · Multiple enclosure
• Lissamona/Lios Ó Móine (Clear Island)Cork (Clear Island) · Extant · Promontory fort
• Lissamona/Lios Ó Móine (Clear Island)Cork (Clear Island) · Extant · Promontory fort
• LissardWaterford · Extant · Likely destroyed · Contour fort
• Loughane BegCork · Likely destroyed · Promontory fort
• MagherintempleCavan · Likely destroyed · Contour fort
• Maglin Beg (Málainn Bhig)Donegal · Likely destroyed · Promontory fort
• MeenogahaneKerry · Extant · Promontory fort
• MeenogahaneKerry · Extant · Promontory fort
• Minard West (Minn Aird Thiar)Kerry · Extant · Promontory fort
• Minard West (Minn Aird Thiar)Kerry · Extant · Promontory fort
• MoanbaunGalway · Extant · Likely destroyed · Contour fort
• MooghaunClare · Extant · Contour fort · Multiple enclosure
• MountbagnallLouth · Likely destroyed · Promontory fort
• MountfortesqueMeath · Extant · Likely destroyed · Partial contour fort
• Moveen EastClare · Extant · Likely destroyed · Promontory fort
• Moveen WestClare · Extant · Promontory fort
• MoydowRoscommon · Extant · Likely destroyed · Contour fort
• MoyrossCork · Extant · Promontory fort
• MuckeltySligo · Extant · Contour fort
• MuckrossDonegal · Extant · Likely destroyed · Promontory fort
• MullaghCavan · Likely destroyed · Promontory fort
• MullaghcorSligo · Extant · Contour fort
• MullaghglassGalway · Extant · Promontory fort
• MullaghmoreSligo · Extant · Promontory fort
• MullaghnasheeRoscommon · Extant · Likely destroyed · Contour fort
• MuntermellanDonegal · Extant · Promontory fort
• Murirrigane (Muragrán)Kerry · Extant · Promontory fort
• Mutton IslandClare (Mutton Island) · Extant · Promontory fort
• Mutton IslandClare (Mutton Island) · Extant · Promontory fort
• Newpark 2Tipperary · Likely destroyed · Contour fort
• NookWexford · Extant · Promontory fort
• OldcourtWicklow · Extant · Contour fort
• OldcourtCork · Likely destroyed · Promontory fort
• PaddockKerry · Extant · Promontory fort
• ParkmoreDonegal · Extant · Likely destroyed · Promontory fort
• Pig IslandMayo · Extant · Promontory fort
• Pollacappul (Poll An Chapaill)Mayo · Extant · Promontory fort
• Port DurlainneMayo · Likely destroyed · Promontory fort
• PortadoonaCork · Extant · Promontory fort
• QuiltyClare · Extant
• RaferaghMonaghan · Extant · Contour fort
• RahallyGalway · Likely destroyed · Multiple enclosure
• RamstownWexford · Extant · Promontory fort
• RathCork · Extant · Likely destroyed · Contour fort · Multiple enclosure
• RathcannonLimerick · Extant · Contour fort · Multiple enclosure
• RathclooneyClare · Extant · Likely destroyed · Contour fort
• RathcoranWicklow · Extant · Contour fort · Multiple enclosure
• RathgallWicklow · Extant · Contour fort · Multiple enclosure
• RathmichealDublin · Extant · Contour fort
• RathmoonWicklow · Cropmark · Likely destroyed · Contour fort · Multiple enclosure
• RathmoylanWaterford · Extant · Promontory fort
• RathnagreeWicklow · Extant · Partial contour fort · Multiple enclosure
• Redford GlebeDonegal · Extant · Promontory fort
• ReenCork · Extant · Promontory fort
• ReenadisertCork · Extant · Promontory fort
• Reencaheragh (Rinn Chathrach)Kerry · Extant · Promontory fort
• Reencaheragh (Rinn Chathrach)Kerry · Extant · Promontory fort
• ReenogrenaCork · Extant · Promontory fort
• ReneelyDonegal · Extant · Promontory fort
• RinglestownMeath · Extant · Contour fort
• RochestownCork · Extant · Likely destroyed · Promontory fort
• RockvilleRoscommon · Extant · Partial contour fort
• Saltee Island GreatWexford (Saltee Island Great) · Extant · Promontory fort
• ShanakillWaterford · Extant · Contour fort
• ShankoaghRoscommon · Extant · Likely destroyed · Promontory fort
• SheemoreLeitrim · Extant · Contour fort
• SlieveLouth · Extant · Promontory fort
• Slievemore (Sherkin Island)Cork (Sherkin Island) · Likely destroyed · Promontory fort
• Spinans Hill 1Wicklow · Extant · Contour fort
• Spinans Hill 2Wicklow · Extant · Likely destroyed · Contour fort
• Srahataggle (Sraith An Tseagail)Mayo · Extant · Promontory fort
• SrooveRoscommon · Extant · Contour fort
• SruhaunWicklow · Likely destroyed · Contour fort
• StradballymoreWaterford · Extant · Promontory fort
• Strake (Clare Island)Mayo (Clare Island) · Extant · Promontory fort
• Strake (Clare Island)Mayo (Clare Island) · Extant · Promontory fort
• TempletownWexford · Extant · Promontory fort
• Termoncarragh (Tearmann Caithreach)Mayo · Extant · Promontory fort
• Termoncarragh (Tearmann Caithreach)Mayo · Extant · Promontory fort
• The DoonsLeitrim · Extant · Contour fort · Multiple enclosure
• Tiduff (An Tigh Duibh)Kerry · Extant · Promontory fort
• Tiduff (An Tigh Duibh)Kerry · Extant · Promontory fort
• TinoranWicklow · Extant · Likely destroyed · Contour fort · Multiple enclosure
• TogherOffaly · Likely destroyed · Contour fort
• Toor MoreKilkenny · Extant · Likely destroyed · Multiple enclosure
• Tory HillLimerick · Likely destroyed · Contour fort
• Tory IslandDonegal (Tory Island) · Extant · Promontory fort · Multiple enclosure
• TownparksDonegal · Extant · Promontory fort
• TreanbegMayo · Extant · Promontory fort
• Tullagh Lower 1Clare · Extant · Contour fort
• Tullagh Lower 2Clare · Extant · Hillslope fort
• TulligClare · Likely destroyed · Promontory fort
• TullynavinnDonegal · Extant · Promontory fort
• UggoolMayo · Extant · Promontory fort
• WarrenRoscommon · Extant · Promontory fort
• West-TownWaterford · Extant · Promontory fort
• Westquarter (An Cheathr– Iartharach)Galway (Inishbofin) · Extant · Promontory fort
• Westquarter (An Cheathr– Iartharach)Westquarter (Inishbofin) · Extant · Promontory fort
• WindmillTipperary · Extant · Contour fort
• Woodford DemesneLeitrim · Extant · Promontory fort
• WoodstownWaterford · Extant · Promontory fort