Irish Surnames

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Irish names are used on the island of Ireland as well as elsewhere in the Western World as a result of the Irish diaspora. See also about Irish names.
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Ó BAOGHILL     Irish
Irish Gaelic form of BOYLE.
O'BEIRNE     Irish
Variant of O'BYRNE.
O'BERNE     Irish
Variant of O'BYRNE.
O'BOYLE     Irish
Variant of BOYLE.
Ó BRÁDAIGH     Irish
Irish Gaelic form of BRADY.
Ó BRADÁIN     Irish
Irish Gaelic form of BRADEN.
Ó BRAOIN     Irish
Irish Gaelic form of BREEN.
Ó BRAONÁIN     Irish
Irish Gaelic form of BRENNAN.
Ó BRIAIN     Irish
Irish Gaelic form of O'BRIEN.
O'BRIAN     Irish
Variant of O'BRIEN.
O'BRIEN     Irish
From the Irish Ó Briain meaning "descendant of BRIAN".
Ó BROIN     Irish
Irish Gaelic form of O'BYRNE.
Ó BUACHALLA     Irish
Irish Gaelic form of BUCKLEY (2).
O'BYRNE     Irish
Anglicized form of Irish Ó Broin meaning "descendant of BRAN (1)".
Ó CAISIDE     Irish
Irish Gaelic form of CASSIDY.
O'CALLAGHAN     Irish
Variant of CALLAGHAN.
Ó CAOIMH     Irish
Irish Gaelic form of KEEFE.
Ó CAOIMHÁIN     Irish
Irish Gaelic form of CAVAN.
Ó CAOINDEALBHÁIN     Irish
Irish Gaelic form of QUINLAN.
Ó CATHÁIN     Irish
Means "descendant of CATHÁN".
Ó CATHASAIGH     Irish
Irish Gaelic form of CASEY.
Ó CEALLACHÁIN     Irish
Irish Gaelic form of CALLAGHAN.
Ó CEALLAIGH     Irish
Irish Gaelic form of KELLY (1).
Ó CEARMADA     Irish
Irish Gaelic form of CARMODY.
Ó CEITHEARNAIGH     Irish
Irish Gaelic form of KEARNEY.
Ó CIARDHA     Irish
Irish Gaelic form of CAREY.
Ó CINNÉIDIGH     Irish
Irish Gaelic form of KENNEDY.
Ó CLÉIRIGH     Irish
Means "descendant of the clerk" in Irish.
O'CLERY     Irish
Anglicized form of Ó CLÉIRIGH.
Ó CNÁIMHÍN     Irish
Means "descendant of Cnámh", Cnámh being a nickname meaning "bone".
Ó COCHLÁIN     Irish
Means "descendant of Cochlán", where the given name Cochlán is derived from Irish cochal "cape" or "hood". This surname originated in County Cork, Ireland.
Ó COIGLIGH     Irish
Irish Gaelic form of QUIGLEY.
Ó COILEÁIN     Irish
Means "descendant of COILEAN" in Irish.
Ó CONAILL     Irish
Irish Gaelic form of CONNELL.
Ó CONCHOBHAIR     Irish
Irish Gaelic form of O'CONNOR.
Ó CONGHALAIGH     Irish
Irish Gaelic form of CONNOLLY.
O'CONNELL     Irish
Variant of CONNELL.
O'CONNOR     Irish
From Irish Ó Conchobhair meaning "descendant of CONCHOBHAR".
Ó CORCRÁIN     Irish
Irish Gaelic form of CORCORAN.
Ó CORRAIDHÍN     Irish
Irish Gaelic form of CURRAN.
Ó CUANA     Irish
Irish Gaelic form of COONEY.
Ó CUIDIGHTHIGH     Irish
Irish Gaelic form of CODY.
Ó CUILINN     Irish
Means "descendant of Cuileann", Cuileann being a nickname meaning "holly".
Ó CUINN     Irish
Irish Gaelic form of QUINN.
Ó DÁLAIGH     Irish
Irish Gaelic form of DALY.
Ó DAMHÁIN     Irish
Means "descendant of DAMHÁN".
Ó DEORÁIN     Irish
Irish Gaelic form of DORAN.
Ó DÍOMASAIGH     Irish
Irish Gaelic form of DEMPSEY.
Ó DOCHARTAIGH     Irish
Irish Gaelic form of DOHERTY.
Ó DOIBHILIN     Irish
Irish Gaelic form of DEVLIN.
Ó DOIRNÁIN     Irish
Irish Gaelic form of DURNIN.
Ó DOMHNAILL     Irish
Irish Gaelic form of O'DONNELL.
Ó DONNCHADHA     Irish
Irish Gaelic form of DONOGHUE.
Ó DONNDUBHÁIN     Irish
Irish Gaelic form of DONOVAN.
O'DONNELL     Irish
Anglicized form of Irish Ó Domhnaill meaning "descendant of DOMHNALL".
Ó DONNGHAILE     Irish
Irish Gaelic form of DONNELLY.
O'DOYLE     Irish
Variant of DOYLE.
Ó DUBHÁIN     Irish
Means "descendant of DUBHÁN".
Ó DUBHGHAILL     Irish
Irish Gaelic form of DOYLE.
Ó DUBHSHLÁIN     Irish
Irish Gaelic form of DOLAN.
Ó DUBHSHLÁINE     Irish
Gaelic form of DELANEY (2).
Ó DUBHTHAIGH     Irish
Irish Gaelic form of DUFFY (1).
Ó FAOLÁIN     Irish
Irish Gaelic form of WHELAN.
Ó FEARGHAIL     Irish
Irish Gaelic form of FARRELL.
Ó FIONNAGÁIN     Irish
Irish Gaelic form of FINNEGAN.
Ó FIONNÁIN     Irish
Irish Gaelic form of FANNON.
Ó FLANNAGÁIN     Irish
Irish Gaelic form of FLANAGAN.
Ó FLOINN     Irish
Irish Gaelic form of FLYNN.
Ó FOGHLADHA     Irish
Irish Gaelic form of FOLEY.
Ó FRIGHIL     Irish
Irish Gaelic form of FRIEL.
Ó GALLCHOBHAIR     Irish
Irish Gaelic form of GALLAGHER.
Ó GORMÁIN     Irish
Irish Gaelic form of GORMAN (2).
O'GORMAN     Irish
Variant of GORMAN (2).
Ó HALLMHURÁIN     Irish
Irish Gaelic form of HALLORAN.
O'HANEGAN     Irish
Variant of O'HANNAGAIN.
O'HANIGAN     Irish
Variant of O'HANNIGAIN.
O'HANNAGAIN     Irish
From Irish Ó hAnnagáin, which means "descendant of Annagán". The given name Annagán was a diminutive of Annadh meaning "delay".
Ó HANNAGÁIN     Irish
Irish Gaelic form of O'HANNAGAIN.
O'HANNAGAN     Irish
Variant of O'HANNAGAIN.
O'HANNEGAN     Irish
Variant of O'HANNAGAIN.
O'HANNIGAIN     Irish
Variant of O'HANNAGAIN.
O'HANNIGAN     Irish
Variant of O'HANNAGAIN.
Ó HAODHA     Irish
Irish Gaelic form of HAYES (2).
Ó HAONGHUIS     Irish
Irish Gaelic form of HENNESSY.
O'HARA     Irish
From the Irish Ó hEaghra, which means "descendant of Eaghra", Eaghra being a given name of uncertain origin. Supposedly, the founder of the clan was Eaghra, a 10th-century lord of Luighne. A famous fictional bearer of this surname is Scarlett O'Hara, a character in Margaret Mitchell's 'Gone With The Wind' (1936).
Ó HEACHTHIGHEARNA     Irish
Means "descendant of Eichthighearn", where the personal name Eichthighearn means "horse lord" in Gaelic.
Ó HEAGHRA     Irish
Irish Gaelic form of O'HARA.
O'HEARN     Irish
Anglicized form of Ó HEACHTHIGHEARNA.
Ó HÉIDEÁIN     Irish
Means "descendant of Éideán" in Irish. The given name Éideán is a diminutive of éideadh meaning "clothes, armour".
Ó HEIDHIN     Irish
Irish Gaelic form of HINES.
Ó HÉIDÍN     Irish
Means "descendant of Éidín" in Irish. The given name Éidín is a diminutive of éideadh meaning "clothes, armour".
Ó HEIDIRSCEÓIL     Irish
Irish Gaelic form of DRISCOLL.
Ó HÍCIDHE     Irish
Irish Gaelic form of HICKEY.
Ó HIFEARNÁIN     Irish
Irish Gaelic form of HEFFERNAN.
Ó HÓGÁIN     Irish
Irish Gaelic form of HOGAN.
Ó HUIGINN     Irish
Irish Gaelic form of HIGGINS.
O'KANE     Irish
Anglicized form of Ó CATHÁIN.
O'KEEFE     Irish
Variant of KEEFE.
Ó LAOGHAIRE     Irish
Irish Gaelic form of O'LEARY.
Ó LEANNÁIN     Irish
Irish Gaelic form of LENNON.
O'LEARY     Irish
From Irish Ó Laoghaire meaning "descendant of LAOGHAIRE".
Ó LOINGSIGH     Irish
Irish Gaelic form of LYNCH.
Ó LUAIN     Irish
Irish Gaelic form of LANE (3).
Ó MADAIDHÍN     Irish
Means "descendant of Madaihín", a given name derived from Irish madadh meaning "dog, mastiff".
Ó MÁILLE     Irish
Means "descendant of a nobleman" from the Irish Gaelic mál.
O'MALLEY     Irish
Anglicized form of Ó MÁILLE.
Ó MANACHÁIN     Irish
Irish Gaelic form of MONAHAN.
Ó MAOIL EOIN     Irish
Irish Gaelic form of MALONE.
Ó MAOIL RIAIN     Irish
Means "descendant of a follower of RÍAN", derived from Irish maol meaning "follower".
Ó MAOILSHEACHLAINN     Irish
Means "descendant of MAOLSHEACHLANN" in Irish.
Ó MAOLÁIN     Irish
Irish Gaelic form of MULLEN.
Ó MAOL AODHA     Irish
Means "descendant of a follower of Saint AODH". It is derived from Irish maol meaning "follower, servant".
Ó MAOL DHOMHNAIGH     Irish
Irish Gaelic form of MOLONEY.
Ó MAOLMHUAIDH     Irish
Means "descendant of Maolmhuadh", Maolmhuadh being a given name meaning "proud chief", derived from Gaelic maol meaning "chief" and muadh meaning "proud, noble".
Ó MAONAIGH     Irish
Irish Gaelic form of O'MOONEY.
Ó MARCAIGH     Irish
Irish Gaelic form of MARKEY.
Ó MATHGHAMHNA     Irish
Irish Gaelic form of MAHONEY.
Ó MEADHRA     Irish
Means "descendant of Meadhra". The given name Meadhra is derived from the Gaelic meadhar meaning "merry, happy".
Ó MEARA     Irish
Variant of Ó MEADHRA.
Ó MOCHÁIN     Irish
Irish Gaelic form of MOHAN.
O'MOONEY     Irish
From the Irish Ó Maonaigh meaning "descendant of Maonaigh". The given name Maonaigh means "wealthy".
Ó MUIRCHEARTACH     Irish
Irish Gaelic form of MORIARTY.
Ó MUIREADHAIGH     Irish
Irish Gaelic form of MURRAY (2).
Ó MURCHADHA     Irish
Irish Gaelic form of MURPHY.
O'NEAL     Irish
From Irish ó Néill meaning "descendant of NEIL".
O'NEILL     Irish
Variant of O'NEAL.
Ó NÉILL     Irish
Irish Gaelic form of O'NEAL.
O'NIALL     Irish
Variant of O'NEAL.
Ó NUALLÁIN     Irish
Irish Gaelic form of NOLAN.
Ó RABHARTAIGH     Irish
Irish Gaelic form of RAFFERTY.
Ó RAGHAILLIGH     Irish
Means "descendant of Raghailligh", an Irish given name of unknown meaning.
O'REILLY     Irish
Anglicized form of Ó RAGHAILLIGH.
Ó RÍAGÁIN     Irish
Irish Gaelic form of REAGAN.
Ó RIAIN     Irish
Means "descendant of RÍAN".
Ó RINN     Irish
Means "descendant of Rinn". The given name Rinn means "star" in Irish.
ORMAN     Irish
Anglicized form of Ó RUAIDH.
ORMOND     Irish
Anglicized form of Ó RUAIDH.
ORMONDE     Irish
Anglicized form of Ó RUAIDH.
Ó RODAGH     Irish
Means "descendant of Rodach" in Irish. The given name Rodach is derived from from Irish rod meaning "spirited, furious".
Ó RUADHÁIN     Irish
Means "descendant of RUADHÁN" in Irish.
Ó RUAIDH     Irish
Means "descendant of RUADH" in Irish.
Ó SCOLAIDHE     Irish
Means "descendant of the scholar" from Irish scholaidhe.
Ó SÉAGHDHA     Irish
Means "descendant of SÉAGHDHA".
Ó SEANÁIN     Irish
Irish Gaelic form of SHANNON.
Ó SEIGHIN     Irish
Means "descendant of Seighin". The given name Seighin means "small hawk" from Old Irish séigene.
O'SHEA     Irish
Anglicized form of Ó SÉAGHDHA.
Ó SÍODA     Irish
Means "descendant of Síoda", a byname meaning "silk" in Irish.
Ó SIRIDEÁIN     Irish
Irish Gaelic form of SHERIDAN.
Ó SUAIRD     Irish
Means "descendant of Suart" in Irish. Suart is derived from the Old Norse name SIGURD.
Ó SÚILEABHÁIN     Irish
Irish Gaelic form of SULLIVAN.
O'SULLIVAN     Irish
Variant of SULLIVAN.
Ó TADHGÁIN     Irish
Irish Gaelic form of TEAGAN.
Ó TAIDHG     Irish
Irish Gaelic form of TEAGUE (1).
Ó TÍGHEARNAIGH     Irish
Irish Gaelic form of TIERNEY.
O'TOOLE     Irish
Anglicized form of Irish Ó Tuathail meaning "descendant of TUATHAL".
Ó TREASAIGH     Irish
Irish Gaelic form of TRACEY (2).
Ó TUATHAIL     Irish
Irish Gaelic form of O'TOOLE.
PAYNE     Irish, Scottish, English
Means "villager, rustic" and later "heathen" from Middle English Payn, Old French Paien which was often given to children whose baptism had been postponed or adults whose religious zeal was lacking.
POWER (1)     English, Irish
Indicated a person who came from Pois (Picardy), France.
POWERS     English, Irish
Variant of POWER (1).
QUEEN     English, Irish
Means "woman" from Old English cwen which was sometimes used as a given name. In some occurrences the meaning could simply have been "queen" derived from Old English cwene. Occasionally it could be a shortened form of MACQUEEN.
QUICKLEY (2)     Irish
Variant of QUIGLEY.
QUIGG     Irish
Variant of QUIGLEY.
QUIGLEY     Irish
Anglicized form of Ó Coigligh meaning "descendant of Coigleach", a given name meaning "untidy".
QUINLAN     Irish
From Irish Ó Caoindealbháin, which means "descendant of Caoindealbhán", a given name meaning "comely form".
QUINN     Irish
Anglicized form of Irish Ó Cuinn meaning "descendant of CONN".
QUIRK     Irish
Variant of QUIRKE.
QUIRKE     Irish
From chroi, a Gaelic word meaning "heart".
RAFFERTY     Irish
Anglicized form of Irish Ó Rabhartaigh meaning "descendant of Rabhartach". The given name Rabhartach means "flood tide".
READY (3)     Irish
Anglicized form of Ó RODAGH.
REAGAN     Irish
Anglicized form of Irish Ó Ríagáin meaning "descendant of RIAGÁN".
REGAN     Irish
Variant of REAGAN.
REILLY     Irish
Anglicized form of Ó RAGHAILLIGH.
RILEY (2)     Irish
Variant of REILLY.
RINNE (1)     Irish
Anglicized form of Ó RINN.
ROWAN     Irish
Anglicized form of Ó RUADHÁIN.
ROWE     English, Scottish, Irish
Means "dweller by a row of hedges or houses" from Middle English row. Some examples of the name are derived from the medieval name Row, which is either a variant of ROLLO or ROLAND.
RUANE     Irish
Anglicized form of Ó RUADHÁIN.
RYAN     Irish
Anglicized form of Ó RIAIN, or else a simplified form of MULRYAN.
SCULLY     Irish
Anglicized form of Ó SCOLAIDHE.
SEWARD (3)     Irish
Anglicized form of Ó SUAIRD.
SHANNON     Irish
From Irish Ó Seanáin which means "descendant of SEANÁN".
SHEA     Irish
Anglicized form of Ó SÉAGHDHA.
SHEACH     Scottish, Irish
Variant of SHEEHY.
SHEEDY     Irish
Anglicized form of Ó SÍODA.
SHEEHY     Irish
Anglicized form of the Gaelic given name SÍTHEACH.
SHEENAN     Irish
Variant of SHANNON.
SHERIDAN     Irish
From the Irish name Ó Sirideáin meaning "descendant of Sirideán". The given name Sirideán means "searcher".
SHINE (2)     Irish
Anglicized form of Ó SEIGHIN.
SLANE     Irish
Originally indicated a person from Slane (County Meath), Ireland.
SLOAN     Irish
Patronymic name derived from the early Irish given name SLUAGHADHÁN.
SLOANE     Irish
Variant of SLOAN.
SULLIVAN     Irish
Anglicized form of the Irish name Ó Súileabháin which means "descendant of Súileabhán". The name Súileabhán means "little dark eye".
TAGGART     Irish, Scottish
Anglicized form of Irish Mac an tSagairt meaning "son of the priest". This name comes from a time when the rules of priestly celibacy were not strictly enforced.
TEAGAN     Irish
Anglicized form of Irish Ó Tadhgáin meaning "descendant of TADHGÁN".
TEAGUE (1)     Irish
Anglicized form of Irish Ó Taidhg meaning "descendant of TADHG".
TIERNEY     Irish
From the Irish Ó Tíghearnaigh meaning "descendant of TIGHEARNACH".
TIGHE     Irish
Anglicized form of Ó TAIDHG.
TOOLE     Irish
Variant of O'TOOLE.
TRACEY (2)     Irish
Anglicized form of Irish Ó Treasaigh meaning "descendant of TREASACH".
TRACY     English, Irish
Variant of TRACEY (1) or TRACEY (2).
TREACY     Irish
Variant of TRACEY (2).
VINCENT (2)     Irish
Anglicized form of Irish Mac Dhuibhinse meaning "son Duibhinse", a given name meaning "black island".
WALLACE     Scottish, English, Irish
Means "foreigner, stranger, Celt" from Norman French waleis (of Germanic origin). It was often used to denote native Welsh and Bretons. A famous bearer was the 13th-century Sir William Wallace of Scotland.
WALSH     English, Irish
From Old English wælisc meaning "foreigner, stranger, Celt".
WARD (2)     Irish
Anglicized form of Irish Mac an Bhaird which means "son of the bard".
WHALEN     Irish
Variant of WHELAN.
WHELAN     Irish
Anglicized form of Irish Ó Faoláin meaning "descendant of FAOLÁN".
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