List of baronies of Ireland

| Antrim Lower

| Named after Antrim town

| Antrim Upper

| Named after Antrim town

| Belfast Lower

| Named after Belfast town (now city)

| Belfast Upper

| Named after Belfast town (now city)

| Carrickfergus

| Formerly a county corporate: the County of the Town of Carrickfergus

| Cary or Carey

|Named after the Cothrugu (Cotraigib, Crotraigib), an ancient tribe.

| Dunluce Lower

| See also Dunluce Castle.

| Dunluce Upper

| See also Dunluce Castle.

| Glenarm Lower

| Named after Glenarm village

| Glenarm Upper

| Named after Glenarm village

| Kilconway

| Name means "forest of the Conmhaícne".

| Massereene Lower

| Namesake of Viscount Massereene. The name means "Queen's hill" and originally belonged to a monastery.

| Massereene Upper

| Namesake of Viscount Massereene. The name means "Queen's hill" and originally belonged to a monastery.

| Toome Lower

| Named after Toome village

| Toome Upper

| Named after Toome village

| Armagh

| Named after Armagh town (now city)

| Fews Lower

|From Irish {{lang|ga|Na Feadha}}, "the lengths"

| Fews Upper

|From Irish {{lang|ga|Na Feadha}}, "the lengths"

| Oneilland East

| Named after the Uí Nialláin tribe — not to be confused with the O'Neills.

| Oneilland West

| Named after the Uí Nialláin tribe — not to be confused with the O'Neills.

| Orior Lower

|From the tribe of the Airthir ("easterners"), part of the Airgíalla.

| Orior Upper

|From the tribe of the Airthir ("easterners"), part of the Airgíalla.

| Tiranny or TuraneyClarkson et al, Notes on Baronies of Ireland

|Named after the Uí Threna tribe.

| Carlow

| Named after Carlow town

| Forth

| Named from the Irish {{lang|ga|Fothairt Mag Feá}}, "{{lang|ga|fothairt}} of the beech plain". A {{lang|ga|fothairt}} was a kingdom not ruled by a branch of the provincial ruling family.

| Idrone East

| Named after the ancient ruling family, the Uí Dróna.

| Idrone West

| Named after the ancient ruling family, the Uí Dróna.

| Rathvilly

| Named after Rathvilly village

| St. Mullin's Lower

| Named after St Mullin's village. Does not border St. Mullin's Upper.

| St. Mullin's Upper

| Named after St. Mullin's village; the land was a detached fragment of the original St. Mullin's barony, and does not border St. Mullin's Lower.

| Named after Castlerahan parish, ultimately from the ancient Castlera[c]han hillfort.

| Clankee

|The name means "Caoch's clan"; {{lang|ga|Caoch}} (meaning "blind" or "squint") was the nickname of Niall mac Cathal na Beithí mac Annadh Ó Raghallaigh (died 1296).{{cite web|url=https://www.logainm.ie/en/11?s=clankee|title=Clann Chaoich/Clankee|website=Logainm.ie|url-status=live|archive-url=https://web.archive.org/web/20171016070638/https://www.logainm.ie/en/11?s=clankee|archive-date=2017-10-16}}

| Clanmahon

|The name is from Clann Mathúna, originally Cloinne Mathghamhna, "Mathgamhain's tribe."

| Loughtee Lower

| Name derives from {{lang|ga|lucht tighe Még Mathghamhna}}, "people of the household of Mac Mahon"; the land was allocated to the vassals of the McMahon.

| Loughtee Upper

| Name derives from {{lang|ga|lucht tighe Még Mathghamhna}}, "people of the household of Mac Mahon"; the land was allocated to the vassals of the McMahon.

| Tullygarvey

| The name means "tribe of Gairbhéith", referring to a king of c. AD 700.

| Tullyhaw

| The name means "Eochaid's tribe", referring to a king of c. AD 650.

| Tullyhunco or Tulloghonoho

|The name means "Dúnchadh's tribe," referring to a king.

| Bunratty Lower

| Named after Bunratty village. Bunratty aka Dangan-i-viggan or Dangan existed by 1574.

| Bunratty Upper

| Named after Bunratty village. Bunratty aka Dangan-i-viggan or Dangan existed by 1574.

| Burren

| The barony is called "Burren"; the region is now usually "The Burren", a name meaning "great rock." Formerly aka Gragans.

| Clonderalaw

|Named after Clonderalaw Castle. Formerly aka East Corkewasken.

| Corcomroe

| Named after the Corco Modhruadh, formerly the ruling dynasty in the area. Formerly aka Dowaghy connoghor/Tuoghmore y Conour.

| Ibrickan or Ibrickane

| Named after the Uí Bhreacáin, formerly the ruling dynasty in the area

| Inchiquin

| Name is Irish for "Quinn's water meadow". Namesake of Baron Inchiquin

| Islands

|Name refers to the islands of the Fergus estuary. Formerly aka Cloynerawde/Clonraude

| Moyarta

|Name from Irish {{lang|ga|Mag Fearta}}, "plain of graves". Formerly aka West Corkewasken.

| Tulla Lower

| Named after Tulla town. Tully (formerly aka Tullaghnenaspule/Tullaghenaspy) existed by 1574

| Tulla Upper

| Named after Tulla town. Tully (formerly aka Tullaghnenaspule/Tullaghenaspy) existed by 1574

| Bantry

| Named after Bantry town

| Barretts

|Named after the Barrett family.

| Barrymore

| Namesake of the Earl of Barrymore. Name means "Great Barrys".

| Bear

| Namesake of the Beara Peninsula. It is said to be named after a princess named Béirre, or possibly settlers from Iberia.

| Carbery East, East Division

| Formerly one large barony of Carbery, named after the Uí Chairpre.

| Carbery East, West Division

| Formerly one large barony of Carbery, named after the Uí Chairpre.

| Carbery West, East Division

| Formerly one large barony of Carbery, named after the Uí Chairpre.

| Carbery West, West Division

| Formerly one large barony of Carbery, named after the Uí Chairpre.

| Condons and Clangibbon

| The territories of two families: the Condons or Cauntons, and the FitzGibbons or White KnightParliamentary Gazetteer of Ireland, [https://books.google.com/books?id=9rblf03SdkYC&pg=PA483 Vol.1 p.483]

| Cork City

| Formerly a county corporate, originally including the Liberties which later formed the separate Barony of Cork. It contains seven civil parishes.

| Cork

| Formed from the "Liberties of Cork", the portion previously within the County of the city of Cork which was not within the borough of Cork.

| Courceys

|Named after the de Courcy barons.

| Duhallow

| Name means "land of the Munster Blackwater".

| Fermoy

| Namesake of Fermoy town, which is actually in Condons and Clangibbon

| Ibane and Barryroe

| Ibane and Barryroe are peninsulas on opposite sides of Clonakilty Bay.Parl. Gaz. Irl. [https://books.google.com/books?id=4iK5_B7W1xIC&pg=PA307 Vol.2 p.307] The names mean, respectively, "Descendants of Bamna" and "Red-haired Barrys".

| Imokilly

|Named after the Uí Meic Caille, a sept of the Uí Liatháin.

| Kerrycurrihy

| Kerrycurrihy and Kinalea united in Down Survey. A tribal name: the Ciarraige Cuirchi.

| Kinalea

| Kerrycurrihy and Kinalea united in Down Survey. The "tribe of Aéd".

| Kinalmeaky

|Named after the Cenél mBeice, "Beice's people", a sept of the O'Mahonys.

| Kinnatalloon

| The name means "Tolamhnach's forest", referring to a 7th-century chief of the Uí Liatháin.

| Kinsale

| Named after Kinsale town

| Muskerry East

| Namesake of Baron Muskerry. The only barony split between the East and West Ridings of County Cork. Named after the ancient tribe of the Múscraige.

|Muskerry West

| Namesake of Baron Muskerry. Named after the ancient tribe of the Múscraige.

| Orrery and Kilmore

| Namesake of Earl of Orrery. Named after the Orbhraighe tribe, while Kilmore means "great forest".

| Banagh

| Territory of the Cinel Boghaine, descended from Niall of the Nine Hostages. Combined with Boylagh till 1791

| Boylagh

| Territory of the O'Boyles. Combined with Banagh till 1791.

| Inishowen East

| Name means "Eoghan's peninsula"

| Inishowen West

| Name means "Eoghan's peninsula"

| Kilmacrenan

|Named after Kilmacrenan village

| Raphoe North

| Named after Raphoe town

| Raphoe South

| Named after Raphoe town

| Tirhugh

|Name means "Aodh's country"

| Ards (or Ardes) Lower

| Namesake of the Ards Peninsula. {{lang|ga|Aird}} is Irish for "promontory".

| Ards (or Ardes) Upper

| Namesake of the Ards Peninsula. {{lang|ga|Aird}} is Irish for "promontory". Includes the feudal barony of Middle Ards within its territory.

| Castlereagh Lower

| Named after Castlereagh townland. Gives its name to the borough of Castlereagh.

| Castlereagh Upper

| Named after Castlereagh townland. Gives its name to the borough of Castlereagh.

| Dufferin

|Name from the Irish {{lang|ga|duibhthrian}}, "black third".

| Iveagh Lower, Lower Half

| Named after the Uí Echach Cobo, a Gaelic people and territory in the region.

| Iveagh Lower, Upper Half

| Named after the Uí Echach Cobo, a Gaelic people and territory in the region.

| Iveagh Upper, Lower Half

| Named after the Uí Echach Cobo, a Gaelic people and territory in the region.

| Iveagh Upper, Upper Half

| Named after the Uí Echach Cobo, a Gaelic people and territory in the region.

| Kinelarty

|Name means "Faghartach's kindred"

| Lecale Lower

| Namesake of the Lecale peninsula. The name means "Cathal's half".

| Lecale Upper

| Namesake of the Lecale peninsula. The name means "Cathal's half".

| Lordship of Newry

| The historic Lordship encompassed lands on both sides of the Down-Armagh border. Later, the jurisdiction of the "Lordship of Newry" for baronial presentment sessions extended only to County Down. Newry town (now city) is now entirely within County Down.

| Mourne

| Named after the Mourne Mountains. A half-barony in the Down Survey.

| Balrothery East

| Named after Balrothery village. Balrothery existed by 1593.

| Balrothery West

| Named after Balrothery village. Balrothery existed by 1593.

| Castleknock

| Named after Castleknock village (now suburban); from 1861, reduced in size by the expanded borders of Dublin city

| Coolock

| Named after the historical village of Coolock, now suburban; from 1861, reduced in size by the expanded borders of Dublin city

| Dublin

| Created by the 1840 Acts from land previously liberties in the county of the city. Its name and area were confirmed by the Dublin Baronies Act 1842. That the distinction between the Barony of Dublin and the Barony of Dublin City persists is shown by a 1985 statutory instrument adjusting their boundaries,{{cite ISB |year=1985|type=si|num=122 |title=Maritime Boundaries (County Borough of Dublin) Order 1985 |date=25 April 1985 |access-date=20 March 2010 |url-status=live |archive-url=https://web.archive.org/web/20110605130809/http://www.irishstatutebook.ie/1985/en/si/0122.html |archive-date=5 June 2011 }} and the inclusion of the 1842 Act in a 2007 list of unrepealed legislation.{{cite web |url=http://www.irishstatutebook.ie/isbc/legdirnote.html |title=Statute Law Revision Act 2007: Schedule 1 |work=Irish Statute Book |publisher=Government of Ireland |access-date=21 March 2010 |url-status=live |archive-url=https://web.archive.org/web/20100306013721/http://www.irishstatutebook.ie/isbc/legdirnote.html |archive-date=6 March 2010 }} Both baronies lie within the former county borough of Dublin, since 2001 redesignated the City of Dublin.

| Dublin City

| Formerly a county corporate

| Nethercross

| Named after a cross erected by Saint Cainnech in Finglas. Compare Uppercross.

| Newcastle

| Named after the village of Newcastle, County Dublin. Not related to the Wicklow barony of Newcastle. In the Down Survey, Newscastle and Uppercross were not distinguished.

| Rathdown

| A half-barony from 1606, with the Wicklow half-barony of Rathdown separated out. From 1861, reduced in size by the expanded borders of Dublin city. Named after Rathdown Castle.

| Uppercross

| Compare Nethercross. In the Down Survey, Uppercross and Newcastle were not distinguished. From 1861, reduced in size by the expanded borders of Dublin city

| Clanawley or Glenawley

| "Awley" is from Mac Amhlaoibh and Mac Amhalghaidh (Irish septs)

| Clankelly or Clonkelly

| Clan of the Kellys

| Coole

| A half-barony in the Down Survey. Name means "corner".

| Knockninny

|Named after the hill of Saint Ninnidh

| Lurg

|Named after the Tuath Luirg ({{lang|ga|Fir Luirg}}; "tribe/men of the path").

| Magheraboy

| Name means "yellow plain"

| Magherastephana

|Name origin unclear; "plain of the FitzStephens?"

| Tirkennedy

| Named after Fergus son of Cremthann, nicknamed Cennfhota ("long head"). No relation to the surname Kennedy.

| Aran or Arran

| Conterminous with the Aran Islands; Inishmore (Árainn Mhór) is named for its shape (ara = kidney)

| Athenry

| Named after Athenry town; called "Halfe Barony and liberties of Athenrey" in the Down Survey.

|Ballymoe

| Named after Ballymoe village; Half with Ballymoe, County Roscommon. Full barony existed in Galway by 1574.

| Ballynahinch

| Named after Ballynahinch town; "Ballenanen" in Down Survey (or Hibernia Delinateo)

| Clare

| Namesake of the River Clare and village of Claregalway. The name means "[river of the] plain".

| Clonmacnowen or Clonmacnoon

| "Clanemtoneen" in Down Survey (or Hibernia Delinateo). Name means "Valley of the sons of Eoghan."

| Dunkellin

|Name means "Coillín's hillfort"

| Dunmore

| Named after Dunmore village

| Galway

| Formerly a county corporate: the county of the Town (now city) of Galway

| Kilconnell or Kilconnnel

| Named after Kilconnell village

| Killian

|Name means "Liatháin's church"

| Kiltartan

| "Killcartar" in Down Survey (or Hibernia Delinateo). Was originally named after Saint Attracta's church. Kiltaraght in 1574.

| Leitrim

| Now also partly in County Clare. Name means "grey ridge".

| Longford

| Name means "ship landing-ground", referring to a {{lang|ga|longphort}} on a tributary of the River Shannon.

| Loughrea

| Named after Loughrea town; called "Half Barony of Lougheagh" in the Down Survey.

| Moycullen

| Named after Moycullen village

| Ross

| In County Mayo in 1574; transferred to Galway within decades; since 1898 partly in Mayo. The name means "the promontory".

| Tiaquin

| Name means "House of double coign"

| Clanmaurice

|Name means "Maurice's clan", referring to Maurice FitzGerald, 1st Earl of Desmond.

| Corkaguiny

| Named after the ancient ruling tribe, the Corcu Duibne.

| Dunkerron North

| Namesake of Dunkerron Castle. Name means "Ciarán's hillfort".

| Dunkerron South

| Namesake of Dunkerron Castle. Name means "Ciarán's hillfort".

| Glanarought or Glanerought

|Name means "Valley of the O'Roughty"

| Iraghticonnor

|Name means "Inheritance of the O'Connors"

| Iveragh

| Name means "Descendants of Ráthach." On the Kilcoolaght East ogham stone (CIIC 211), this name appears in the Primitive Irish form Rittaveccas.

| Magunihy or Magonhy

|Name means "Coinchinn's plain"; a personal name meaning "wolf-warrior".

| Trughanacmy or Trughenackmy

| Name means "cantred of the tribe"

| Carbury or Carbery

| Named after Carbury

| Clane

| Named after Clane village

| Connell or Great Connell

| Named after [Old] Connell, a holy site and ford near Newbridge.

| Ikeathy and Oughterany

| The baronies of Ikeathy and Oughterany were united some time between 1558 and 1608.{{cite journal|last=Cullen |first=Séamus |author2=Tadhg O'Keeffe |year=1994 |title=A Turreted Enclosure at Pitchfordstown, County Kildare |journal=Journal of the Royal Society of Antiquaries of Ireland |publisher=Royal Society of Antiquaries of Ireland |volume=124 |pages=215–217 |jstor=25509069 }} "Okeathy Ocerny" in 1593.

| Kilcullen

| Named after Kilcullen town. A half-barony in the Down Survey.

| Kilkea and Moone

| Named after the villages of Kilkea and Moone.

| Naas North

| Named after Naas town. "Naas Upper" in 1593.

| Naas South

| Named after Naas town. "Naas Nether" in 1593.

| Narragh and Reban East

| Named after Narragh and Rheban Castle. Namesake of the hereditary Barony of Norragh.

| Narragh and Reban West

| (See Narragh and Reban East)

| Offaly East

| Named after Uí Failghe; also the name of County Offaly to the west. Barony of Offaly existed in 1593.

| Offaly West

| (see Offaly West)

| North Salt

| "Salt" derived from Saltus Salmonis, the Latin name for Leixlip. Barony of Salt existed by 1593.

| South Salt

| (See North Salt)

| Callan

| Named after Callan town; "Callen Liberties" in Down Survey. The 1836 Act "for removing doubts" explicitly states the town and liberties "shall be deemed and taken to be a barony"{{cite ISB|year=1836|num=116|parl=uk|section=154|stitle=Town or liberties of Callan to be a barony of the county of Kilkenny for purposes of presentments, &c.|title=Grand Jury (Ireland) Act 1836|regy=6 & 7 William 4|archive-url=https://web.archive.org/web/20140729202327/http://www.irishstatutebook.ie/1836/en/act/pub/0116/print.html#s154_p0|archive-date=2014-07-29}}

| Crannagh or Crannach

|Name means "abounding in trees".

| Fassadinin or Fassadining

| Name means "wilderness by the River Dinan".

| Galmoy

| Name means "plain of the River Goul".

| Gowran

| Named after Gowran village

| Ida, or "Ida, Igrinn and Iberchon"

| Now also partly in County Wexford. A tribal name: the Uí Dheaghaidh, descendants of Deagaid.

| Iverk

| Name means "descendants of Erc".

| Kells

|Named after Kells, County Kilkenny.

| Kilculliheen

| Originally a civil parish in the county of the city of Waterford, transferred to the county in 1840. Its status as a barony separate from Gaultier was not recognised by the census until 1871.{{cite web|url=http://www.histpop.org/ohpr/servlet/PageBrowser?path=Browse/Census%20(by%20date)/1871/Ireland&active=yes&mno=423&tocstate=expandnew&display=sections&display=tables&display=pagetitles&pageseq=865|title=Area, houses and population, Vol.II (Munster)|work=Census of Ireland 1871|publisher=HISTPOP.ORG|pages=865, Table III, footnote|access-date=15 September 2014|url-status=live|archive-url=https://web.archive.org/web/20140915184505/http://www.histpop.org/ohpr/servlet/PageBrowser?path=Browse%2FCensus%20%28by%20date%29%2F1871%2FIreland&active=yes&mno=423&tocstate=expandnew&display=sections&display=tables&display=pagetitles&pageseq=865|archive-date=15 September 2014}} It was transferred to County Kilkenny in 1898. It is now also partly in the city of Waterford.

| Kilkenny

| Formerly a county corporate: the County of the city of Kilkenny

| Knocktopher

| Named after Knocktopher village

| Shillelogher

| A tribal name, meaning "descendants of Faolchar", a name meaning "wolf-love"

| Ballyadams

|Named after Ballyadams Castle

| Clandonagh

| One of three traditional subunits of Upper Ossory, which was extant as a barony by 1657 and formally abolished in 1846. "Clan Dunphy", named after the descendants of Donnchad Midi.

| Clarmallagh

| One of three traditional subunits of Upper Ossory, which was extant as a barony by 1657 and formally abolished in 1846. Name means "Flat land of {{lang|ga|Maigh Locha}} [lake plain]", referring to Grantstown Lake.

| Cullenagh or Cullinagh

| Named after the Cullenagh Mountains.

| Maryborough East

| Named after Portlaoise, formerly named Maryborough

| Maryborough West

| Named after Portlaoise, formerly named Maryborough

| Portnahinch or Portnehinch

| Named after Portnahinch, a landing-ground on the River Barrow.

| Slievemargy, Slewmergie, Slieuemargue, Slieuemargy

| Named after the Slievemargy hills. Now also partly in County Carlow

| Stradbally

| Named after Stradbally village

| Tinnahinch or Tinnehinch

| Named after Tinnahinch village

| Upper Woods or Upperwoods

| One of three traditional subunits of Upper Ossory, which was extant as a barony by 1657 and formally abolished in 1846. Named after the forests of the Slieve Bloom Mountains.

| Carrigallen

| Named after Carrigallen

| Drumahaire

| Named after Drumahaire. Considered part of Sligo in 1574.

| Leitrim

| Named after Leitrim village. Considered part of Sligo in 1574.

| Mohill

| Named after Mohill

| Rosclougher or Rossclogher

|Named after Rosclogher Castle.

| Clanwilliam

| Name means "clan of William de Burgh"

| Connello Lower or Conello Lower

| Territory of the O'Connells.

| Connello Upper or Conello Upper

| Territory of the O'Connells.

| Coonagh

| Name means "descendants of Cuana".

| Coshlea or Costlea

| Name literally means "foot of the mountain".

| Coshma

| Name means "banks of the Maigue".

| Glenquin

| Prior to 1841, part of Connello Upper.{{cite book |last=Wyndham-Quin |first=Caroline |author2=Edwin Richard W. Wyndham-Quin |title=Memorials of Adare manor; with historical notices of Adare|publisher=privately printed by Messrs Parker|location=Oxford|year=1865 |pages=[https://archive.org/details/bub_gb_IDUJAAAAQAAJ/page/n288 277] |url=https://archive.org/details/bub_gb_IDUJAAAAQAAJ}}

| Kenry

| From the Cáenraige, an ancient tribe.

| Kilmallock or Kilmallock Liberties

| Named after Kilmallock. Not enumerated in the 1821 census.

| Limerick City

| Formerly a county corporate; includes the "[South] Liberties" of Down Survey

| North Liberties of Limerick city

| formerly Liberties; the "North Liberties" were record separately from the "South Liberties" in the Down Survey.

| Owneybeg or Owenybeg

| The territory of Uaithni encompassed Owneybeg and part of Owney and Arra

| Pubblebrien

| Name means "Brian's people", referring to Brian Boru.

| Shanid

| Prior to 1841, part of Connello Lower.

| Smallcounty

| The Irish name means "the little vassal tribe"; see Deisi.

|Coleraine

| Named after Coleraine town, although the town itself is in the North East Liberties of Coleraine. A half-barony in 1807, including the south-west liberties of Coleraine.

| Keenaght or Kenaught

| Named after the Ciannachta tribe, descended from Tadc mac Céin.

| Loughinsholin

|Name means "lough of O'Lynn's island", referring to a lake containing a crannóg.

| North East Liberties of Coleraine

| formerly Liberties of Coleraine town.

| North-West Liberties of Londonderry

| formerly Liberties of Londonderry city.

| Tirkeeran or Tyrkeeran

| A half-barony in 1807,Accounts...of the Presentments...1807 [https://books.google.com/books?id=ADFbAAAAQAAJ&pg=PA229 p.229] including the south-east liberties of Londonderry.{{cite book|title=From the Thirty-ninth Year of George III. A. D. 1799, to the Fortieth Year of George III. A. D. 1800, inclusive. |editor=Richard Nun|publisher=George Grierson|year=1801|series=Statutes passed in the Parliaments held in Ireland ...: from the third year of Edward the second, A.D. 1310 to the fortieth year of George III A.D. 1800, inclusive |volume=12 |pages=300–303|chapter=40 Geo iii c.80: An Act to explain and amend an Act passed in the Thirty-fifth Year of his present Majesty's Reign, entitled An Act for regulating the Election of Members to serve in Parliament, and for repealing the several Acts therein mentioned, and to explain and amend an Act passed in the Thirty-Seventh Year of said Reign, entitled An Act for the further Regulation of the Election of Members to serve in Parliament.|chapter-url=https://books.google.com/books?id=h3BBAAAAYAAJ&pg=RA1-PA300}} Name means "land of the sons of Cartin."

| Ardagh

| Named after Ardagh village

| Granard

| Named after Granard village

| Longford

| Named after Longford town

| Moydow

| Named after Moydow village

| Rathcline

| Named after Rathcline Castle.

| Shrule or Abbeyshrule

| Named after Abbeyshrule

| Ardee

| Named after Ardee town

|Drogheda

| Formerly a county corporate. A barony separate from the county was formed in 1840 from the portion previously within the County of the town of Drogheda which was not within the town of Drogheda. In 1844 was expected to be soon absorbed into Ferrard.Parliamentary gazetteer of Ireland, [https://books.google.com/books?id=4iK5_B7W1xIC&pg=PA66 Vol. II, p.66]

| Dundalk Lower

| Named after Dundalk town

| Dundalk Upper

| Named after Dundalk town

| Ferrard

| From {{lang|ga|Fera Arda Ciannachta}}, "men of high Ciannachta". Namesake of Viscount Massereene and Ferrard.

| Louth

| Named after Louth village

| Burrishoole

| Named after Burrishoole Castle; a few sources list Burrishoole split into "Burrishoole North" and "Burrishoole South"For example, [https://books.google.com/books?id=518NAAAAYAAJ&pg=RA1-PA587 Thom's Directory of Ireland, p.597] 1852; or County Cess and Poor Rate (Ireland) (House of Commons Accounts & Papers, Vol 24, Part I, No.174, p.6) 13 June 1894

| Carra

| Named after Carra village. Called Burriscarra/Burisker in 1574.

| Clanmorris

| Namesake of Baron Clanmorris. Name means "Muiris' family". Called Croslwyhin/Crossboyne in 1574.

| Costello or Clancostello

| Now also partly in County Roscommon. Named after the Hiberno-Norman MacOisdealbhaigh (Costello) family. Called Beallahaunes/Ballyhaunis in 1574.

| Erris

| Named after Erris village. A half-barony in the Gilbert Manuscript of the Down Survey. "Kunermore[Invermore], containing Erest [Erris] and Dondonell" is barony listed in 1574.

| Gallen

| Named after the Gailenga tribe. Beallalahane in 1574.

| Kilmaine

| Named after Kilmaine village

| Murrisk

| Named after Murrisk village

| Tirawley or Tyrawley

| Name means "Amlaid's land", referring to Amalgaid mac Fiachrae. "Many"/Moyne in 1574.

| Deece Lower

| Deece barony present by 1542. Named after the Déisi Becc.

| Deece Upper

| Deece barony present by 1542. Named after the Déisi Becc.

| Duleek Lower

| Named after Duleek village. Now also partly in County Louth. Duleek barony present by 1542

| Duleek Upper

| Named after Duleek village. Duleek barony present by 1542

| Dunboyne

| Named after Dunboyne town.

| Fore or Demifore

| Half with Fore, County Westmeath since 1542. Named after Fore Abbey.

| Kells Lower

| Named after Kells town. Kells barony present by 1542.

| Kells Upper

| Named after Kells town. Kells barony present by 1542.

| Lune

| Named after the Luighne tribe.

| Morgallion

| Name means "plain of the Gailenga", a medieval tribe.

| Moyfenrath (or Moyfenragh) Lower

| Moyfenrath barony present by 1542. The name means "plain of the fair fort".

| Moyfenrath (or Moyfenragh) Upper

| Moyfenrath barony present by 1542. The name means "plain of the fair fort".

| Navan Lower

| Named after Navan town. Navan barony present by 1542.

| Navan Upper

| Named after Navan town. Navan barony present by 1542.

| Ratoath

| Named after Ratoath village.

| Skreen or Skryne

| Named after Skryne village

| Slane Lower

| Named after Slane village. Slane barony present by 1542.

| Slane Upper

| Named after Slane village. Slane barony present by 1542.

| Cremorne

| From Irish meaning "border of the Mugdorna"

| Dartree or Dartry

| Name from the ancient kingdom of Dartraighe.

| Farney

| Named from the ancient kingdom of Fernmag, "plain of alders"

| Monaghan

| Named after Monaghan town.

| Trough

| From the Irish {{lang|ga|trícha cét}}, a unit of territory in Medieval Ireland.

| Ballyboy

| Named after Ballyboy village

| Ballybritt

| Named after Ballybritt Castle.

| Ballycowen

| Named after Ballycowan Castle.

| Clonlisk

| Named after Clonlisk Castle.

| Coolestown

| Named after Coolestown, the former name of Edenderry.

| Eglish or Fercale

| The name means "church" while Fercale means "men of the churches"

| Garrycastle

| Named after Garrycastle

| Geashill

| Named after Geashill village

| Kilcoursey

| Named after Kilcoursey Castle.

| Philipstown Lower

| Named after Philipstown, now renamed Daingean

| Philipstown Upper

| Named after Philipstown, now renamed Daingean

| Warrenstown

| Named after Ballybrittain (Warrenstown) Castle.

| Athlone North

| Named after Athlone town. North and South not separated in 1871 census. The original Athlone barony existed by 1574.

| Athlone South

| Ballintober North

| Named after Ballintober town (now in Castlereagh barony). The original Ballintober barony existed by 1574.

| Ballintober South

| Named after Ballintober town (now in Castlereagh barony). The original Ballintober barony existed by 1574.

| Ballymoe

| Half with Ballymoe, County Galway. Named after Ballymoe village, on the County Galway side of the River Suck. The full Ballymoe barony was part of Galway in 1574.

| Boyle

| Named after Boyle town

| Castlereagh

| Named after Castlerea town. Previously one of three sections of Ballintober barony.Parl. Gaz. Irl. [https://books.google.com/books?id=9rblf03SdkYC&pg=PA147 Vol.1 p.147] (Ballintober town is in Castlereagh barony.) The original Ballintober barony existed by 1574.

| Frenchpark

| Named after Frenchpark village; previously part of the barony of Boyle.Parl. Gaz. Irl. [https://books.google.com/books?id=9rblf03SdkYC&pg=PA271 Vol.1 p.271]

| Moycarn or Moycarnon or Moycarne or Moycarnan

| Now also partly in Galway. A half-barony in 1807.1807, [https://books.google.com/books?id=ADFbAAAAQAAJ&pg=PA32 p.324] Name means "plain of the cairn", or possibly a reference to Cernunnos.

| Roscommon

| Named after Roscommon town, which is in Ballintober South

| Carbury

| Divided into Upper and Lower baronies before 1841. Named after the ancient túath of the Cairbre Drom Cliabh.

| Coolavin

| Name means "corner of the descendants of Finn"

| Corran

| Named after Corann village

| Leyny or Leney

| Named after the Luighne Connacht tribe

| Tireragh or Tyreragh

| Now also partly in County Mayo. Name means "land of the Uí Fiachrach".

| Tirerril or Tyraghrill

| Name means "Olliol's land", referring to Ailill mac Echach Mugmedóin.

| Clanwilliam

| Name means "clan of William de Burgh"

| Eliogarty

| A half-barony (with Ikerrin) in the Down Survey. Name means "Éile of the Uí Fhogartaigh."

| Iffa and Offa East

| Name means "descendants of Eoghan and descendants of Fathaidh"

| Iffa and Offa West

| Name means "descendants of Eoghan and descendants of Fathaidh"

| Ikerrin

| A half-barony (with Eliogarty) in the Down Survey. Name means "descendants of Cairín".

| Kilnamanagh Lower

| Named after Kilnamanagh town

| Kilnamanagh Upper

| Named after Kilnamanagh town.

| Middle Third

|From {{lang|ga|trian}} meaning "third" or "portion"

| Ormond Lower

| Compare Ormond ("east Munster")

| Ormond Upper

| Compare Ormond ("east Munster")

| Owney and Arra

| "Owney Mulrian" and Arra were separate baronies in the Down Survey, named respectively after the ancient kingdom of Uaithni and the River Ara.Petty 1851, [https://books.google.com/books?id=FysNAAAAYAAJ&pg=PA58 p.58] Owney Mulrian formed Uaithne with Owneybeg in Limerick.

| Slievardagh

| "Slevardagh & Compsy" in the Down Survey. The name means "high mountain of the Eoganachta".

| Clogher

| Named after Clogher town

| Dungannon Lower

| Named after Dungannon town

| Dungannon Middle

| Named after Dungannon town

| Dungannon Upper

| Named after Dungannon town

| Omagh East

| Named after Omagh town

| Omagh West

| Named after Omagh town

| Strabane Lower

| Named after Strabane town

| Strabane Upper

| Named after Strabane town

| Coshmore and Coshbride

| Baronies of Coshmore and Coshbride were separate in the 1821 census. The names mean, respectively, "bank of the Munster Blackwater" and "bank of the River Bride".

| Decies-within-Drum

| Decies south of the Drum Hills.

| Decies-without-Drum

| Decies north of the Drum Hills. "Without" is used with the meaning of "beyond" or "outside".

| Gaultier or Gaultiere

| Kilculliheen was formerly a parish of this barony. Name means "land of foreigners", referring to Vikings.

| Glenahiry

|Name means "valley of the Nier", referring to the Nier River.

| Middle Third or Middlethird

|From {{lang|ga|trian}} meaning "third" or "portion"

| Upperthird or Upper Third

| Name originally meant "upper country"; probably acquired "third" in name by analogy with Middle Third.

| Waterford City

| Formerly a county corporate.

| Brawny

| The ancient territory of Bregmaine.

| Clonlonan

| Name means "Lonán's meadow"

| Corkaree

| A tribal name, "descendants of Raoi"

| Delvin

| Named after Delvin village

| Farbill

| A tribal name: "men of the sacred tree"

| Fartullagh

| Previously Tyrrells country. Name means "men of the hillock", a tribal name.

| Fore or Demifore

| Half with Fore, County Meath. Named after Fore Abbey.

| Kilkenny West

| Previously Maherquirke, Dillons country

| Moyashel and Magheradernon

| Moyashel and Magheradernon listed separately in 1542. They formed the ancient territories of Mag nAssail (Assail's plain) and the plain of the O'Tiernans.

| Moycashel

| Originally the Barony of Rossaughe; before that, Delamares country. Name means "plain of the stone ringfort".

| Moygoish

| A tribal name: "Descendants of the Son of Cuas"

| Rathconrath

| Named after Rathconrath village; previously Daltons country

| Ballaghkeen North

| Named for the village of Ballaghkeen (The Ballagh).

| Ballaghkeen South

| Named for the village of Ballaghkeen (The Ballagh).

| Bantry

| Named after the Bendtraigi Laigen, the former ruling people.

| Bargy

| Named after the ruling Uí Bairrche family, who claimed descent from Dáire Barrach.

| Forth

| A {{lang|ga|Fortuatha}} was a kingdom not ruled directly by members of the dominant dynasty of a province. This area was ruled by Fothairt in Chairn.

| Gorey

| Named after Gorey town

| Scarawalsh

| Name means "rocky ford of light"

| Shelburne

| Named after the tribe, {{lang|ga|Síl Broin}}, "offspring of Broin"

| Shelmaliere East

|Named after the ruling people, the {{lang|ga|Síl Máel Uidir}}, "Offspring of Bald Uidir"

| Shelmaliere West

|Named after the ruling people, the {{lang|ga|Síl Máel Uidir}}, "Offspring of Bald Uidir"

| Arklow

| Named after Arklow town

| Ballinacor North

| United barony of Talbotstown created in 1606, and divided into half-baronies for civil law purposes in 1798.{{cite book |title=Statutes Passed in the Parliaments Held in Ireland |date=1799 |publisher=G. Grierson |location=Dublin |volume=XI: 1797-1798 |page=411 |chapter-url=https://books.google.com/books?id=0G9BAAAAYAAJ&pg=PA411 |access-date=22 October 2018 |language=en |chapter=38 Geo.3 c.25 s.6}} Named after Ballinacor Castle.

| Ballinacor South

| (See Ballinacor North)

| Newcastle

| Named after the village of Newcastle, County Wicklow. Not related to County Dublin barony of the same name.

| Rathdown

| Half with Rathdown, County Dublin. Named after Rathdown Castle.

| Shillelagh

| Named after Shillelagh village. A half-barony in 1807.Accounts...of the Presentments...1807, [https://books.google.com/books?id=ADFbAAAAQAAJ&pg=PA451 p.451]

| Lower Talbotstown

| Named after Talbotstown village. United barony of Talbotstown created in 1606.

| Upper Talbotstown

| (See Talbotstown Lower)

| Igrin

| {{ntsh|1400}} By 15th century

| {{ntsh|1672}} By 1672

| Ida

| Ida was earlier called "Ida, Igrin, and Ibercon"

| Ibercon

| {{ntsh|1400}} By 15th century

| {{ntsh|1672}} By 1672

| Ida

| Ida was earlier called "Ida, Igrin, and Ibercon"

| Lower Ossory

| {{ntsh|1400}} By 15th century

| {{ntsh|1672}} By 1672

| Fassadining

|

| Upper Ossory

| {{ntsh|1600}} 1600

| {{ntsh|1846}} 1846

| Clandonagh, Clarmallagh, and Upper Woods.{{cite book|last=Carrigan |first=William |title=The history and antiquities of the diocese of Ossory |publisher=Sealy, Bryers & Walker |location=Dublin |year=1905 |volume=1|pages=20–21|chapter=Introduction: I Extent of the Kingdom of Ossory; 3: Existing civil divisions, or baronies |chapter-url=https://archive.org/stream/historyandantiq02carrgoog#page/n64/mode/2up/search/1846}}

| Added in 1600 by letters patent to the Queen's County created in 1556.{{cite book|last=Atkinson|first=Ernest George|title=Elizabeth: 1600 March - October|chapter-url=https://archive.org/stream/1903calendarofstatep09greauoft#page/328/mode/1up|series=Calendar of the State Papers relating to Ireland, of the reigns of Henry VIII, Edward VI., Mary, and Elizabeth|volume=9|year=1903|publisher=HMSO|location=London|pages=328|chapter=Vol.ccvi Part 4 No.41|url-status=live|archive-url=https://web.archive.org/web/20160505072123/http://www.archive.org/stream/1903calendarofstatep09greauoft#page/328/mode/1up|archive-date=2016-05-05}}Collins & Brydges 1812, p.299{{cite book |editor1-last=Moody |editor1-first=T. W. |editor2-last=Martin |editor2-first=F. X. |editor3-last=Byrne |editor3-first=F. J. |first=K. W. |last=Nicholls |title=Maps, Genealogies, Lists: A Companion to Irish History, Part II|series=A New History of Ireland|volume=9|date=May 19, 2011|publisher=Oxford University Press, USA|isbn=978-0199593064|page=43|chapter=Map 45: Counties 1542-1613}}

| Kilnelongurty or Killnallougurty

| {{ntsh|1672}} By 1672

| {{ntsh|1821}} 1792–1821

| Kilnamanagh, now Kilnamanagh UpperParliamentary gazetteer of Ireland [https://books.google.com/books?id=4iK5_B7W1xIC&q=KILNALLOUGURTY&pg=PA523 Vol.II p.523]{{cite journal |last1=Callanan |first1=M. N. |title=The de Burgos or Bourkes of Ileagh |journal=Munster Antiquarian Journal |date=1937 |volume=II |pages=67–77: 67 |url=http://www.limerickcity.ie/media/NMAJ%20vol%201%20no%202%2010%20The%20de%20Burgos%20or%20Bourkes%20of%20Ileagh,%20by%20M.%20Callanan.pdf }}

| A "Territory" in the Down Survey; Parishes of Templebeg, Upperchurch, and DoonPetty 1851, [https://books.google.com/books?id=FysNAAAAYAAJ&pg=PA60 p.60]

| Ileagh Territory

| {{ntsh|1672}} By 1672

| {{ntsh|1821}} 1792–1821

| Kilnamanagh, now Kilnamanagh UpperParliamentary gazetteer of Ireland [https://books.google.com/books?id=4iK5_B7W1xIC&q=Ileagh&pg=PA310 Vol.II p.310]

| A "Territory" in the Down Survey; Parish of Glenkeen and townland of Barracurragh in the parish of Ballycahill.

| St Sepulchre

| {{ntsh|1774}} 1774{{cite web|url=https://books.google.com/books?id=9X1RAAAAYAAJ&pg=PA550|title=The Statutes at Large, Passed in the Parliaments Held in Ireland: I. All the statutes that have passed from the ninth year of George the Third, to the sixteenth year inclusive; II. A table of the titles of the public statutes; III. A table of the titles of all the private statutes passed in the above periods; IV. A compleat index|date=15 May 1782|publisher=Boulter Grierson|via=Google Books}}

| {{ntsh|1840}} 1840

| Dublin City

| Comprising those lands of the Manor of St. Sepulchre and the Deanery of St Patrick previously in the barony of Uppercross and north of the South Circular Road.Gazetteer of Ireland, [https://books.google.com/books?id=4iK5_B7W1xIC&pg=PA96 Vol II, p.96] (The rest of the liberty was within the county of the city of Dublin.)

| Donore

| {{ntsh|1774}} 1774

| {{ntsh|1840}} 1840

| Mostly Dublin City, partly Uppercross

| Comprising those lands of the Liberty of Thomas Court and Donore previously in the barony of Uppercross. (The rest of the liberty was within the county of the city of Dublin.)

| (Kilkenny liberties)

| {{ntsh|1840}} 1840

| {{ntsh|1840}} c.1840

|

| Made by the 1840 Act from the portion of the County of the City of Kilkenny outside the borough of KilkennyParliamentary gazetteer of Ireland, [https://books.google.com/books?id=4iK5_B7W1xIC&pg=PA429 Vol.II pp.429–30]

| (South liberties)

| {{ntsh|1840}} 1840

| {{ntsh|1840}} c.1840

| Clanwilliam and Pubblebrien

| Made by the 1840 Act from the portion of the County of the City of Limerick outside the borough of Limerick and adjacent to County Limerick.Parliamentary gazetteer of Ireland, [https://books.google.com/books?id=4iK5_B7W1xIC&pg=PA630 Vol.II p.630] The North Liberties, detached between the city and county Clare, remained a separate barony, although the Ordnance Survey and census did not at first record it.

{{cite book|title=Advances from the Consolidated Fund (Ireland)|url=https://books.google.com/books?id=059bAAAAQAAJ&pg=PR4-IA70|series=Command papers|volume=C 183|date=26 March 1850|publisher=HMSO|pages=6 (footnote), 8 (footnote)}}

{{cite journal|last=FitzGerald|first=Garrett|year=1984|title=Estimates for baronies of minimum level of Irish-speaking amongst successive decennial cohorts: 1771-1781 to 1861-1871|journal=Proceedings of the Royal Irish Academy|publisher=Royal Irish Academy|volume=84 C|issue=3|page=142|quote=On the other hand the baronies of the North Liberties of Limerick and of Kilculliheen to the north of Waterford city were not used in the 1851 or 1861 censuses but are shown separately in 1881.}}

| (Scattery Island)

| {{ntsh|1840}} 1840

| {{ntsh|1854}} 1854

| Moyarta

| Made by the 1840 Act from the portion of the County of the City of Limerick outside the borough of Limerick and adjacent to County Clare. Scattery Island was not formally reassigned till a Proclamation in Council of 1854.{{cite book |title=The Statutory Rules and Orders Revised, being the statutory rules and orders (other than those of a local, personal, or temporary character) in force of December 31, 1903. |volume=II: Charity, England to County Council, Scotland |publisher=HMSO |location=London |year=1904 |pages=19–21 |chapter=Counties, Ireland; Proclamation in council, dated November 13, 1854, annexing the Island of Scattery to the Barony of Moyarta, County of Clare.}}

| (Waterford south liberties)

| {{ntsh|1840}} 1840

| {{ntsh|1840}} c.1840

| Gaultiere, Middlethird

| Made by the 1840 Act from the portion of the County of the City of Waterford outside the borough of Waterford.Parliamentary gazetteer of Ireland, [https://books.google.com/books?id=1HMuAAAAMAAJ&pg=PA486 Vol.III p.486] The north liberties became Kilculliheen, although the Ordnance Survey and census did not at first record it as a barony.