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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O'BEIRNEIrish
Variant of O'BYRNE.
O'BERNEIrish
Variant of O'BYRNE.
O'BOYLEIrish
Variant of BOYLE.
Ó BRÁDAIGHIrish
Irish Gaelic form of BRADY.
Ó BRADÁINIrish
Irish Gaelic form of BRADEN.
Ó BRAOINIrish
Irish Gaelic form of BREEN.
Ó BRAONÁINIrish
Irish Gaelic form of BRENNAN.
Ó BRIAINIrish
Irish Gaelic form of O'BRIEN.
O'BRIANIrish
Variant of O'BRIEN.
O'BRIENIrish
From the Irish Ó Briain meaning "descendant of BRIAN".
Ó BROINIrish
Irish Gaelic form of O'BYRNE.
Ó BUACHALLAIrish
Irish Gaelic form of BUCKLEY (2).
O'BYRNEIrish
Anglicized form of Irish Ó Broin meaning "descendant of BRAN (1)".
Ó CAISIDEIrish
Irish Gaelic form of CASSIDY.
O'CALLAGHANIrish
Variant of CALLAGHAN.
Ó CAOIMHIrish
Irish Gaelic form of KEEFE.
Ó CAOIMHÁINIrish
Irish Gaelic form of CAVAN.
Ó CAOINDEALBHÁINIrish
Irish Gaelic form of QUINLAN.
Ó CATHÁINIrish
Means "descendant of CATHÁN".
Ó CATHASAIGHIrish
Irish Gaelic form of CASEY.
Ó CEALLACHÁINIrish
Irish Gaelic form of CALLAGHAN.
Ó CEALLAIGHIrish
Irish Gaelic form of KELLY (1).
Ó CEARMADAIrish
Irish Gaelic form of CARMODY.
Ó CEITHEARNAIGHIrish
Irish Gaelic form of KEARNEY.
Ó CIARDHAIrish
Irish Gaelic form of CAREY.
Ó CINNÉIDIGHIrish
Irish Gaelic form of KENNEDY.
Ó CLÉIRIGHIrish
Means "descendant of the clerk" in Irish.
O'CLERYIrish
Anglicized form of Ó CLÉIRIGH.
Ó CNÁIMHÍNIrish
Means "descendant of Cnámh", Cnámh being a nickname meaning "bone".
Ó COCHLÁINIrish
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 COIGLIGHIrish
Irish Gaelic form of QUIGLEY.
Ó COILEÁINIrish
Means "descendant of COILEAN" in Irish.
Ó COMHRAIDHEIrish
Means "descendant of Comhraidhe", in which the given name Comhraidhe is of unknown meaning.
Ó CONAILLIrish
Irish Gaelic form of CONNELL.
Ó CONCHOBHAIRIrish
Irish Gaelic form of O'CONNOR.
Ó CONGHALAIGHIrish
Irish Gaelic form of CONNOLLY.
O'CONNELLIrish
Variant of CONNELL.
O'CONNORIrish
From Irish Ó Conchobhair meaning "descendant of CONCHOBHAR".
Ó CORCRÁINIrish
Irish Gaelic form of CORCORAN.
Ó CORRAIrish
Means "descendant of Corra" in Irish. The given name Corra means "spear".
Ó CORRAIDHÍNIrish
Irish Gaelic form of CURRAN.
Ó CUANAIrish
Irish Gaelic form of COONEY.
Ó CUIDIGHTHIGHIrish
Irish Gaelic form of CODY.
Ó CUILINNIrish
Means "descendant of Cuileann", Cuileann being a nickname meaning "holly".
Ó CUINNIrish
Irish Gaelic form of QUINN.
Ó DÁLAIGHIrish
Irish Gaelic form of DALY.
Ó DAMHÁINIrish
Means "descendant of DAMHÁN".
Ó DEORÁINIrish
Irish Gaelic form of DORAN.
Ó DÍOMASAIGHIrish
Irish Gaelic form of DEMPSEY.
Ó DOCHARTAIGHIrish
Irish Gaelic form of DOHERTY.
Ó DOIBHILINIrish
Irish Gaelic form of DEVLIN.
Ó DOIRNÁINIrish
Irish Gaelic form of DURNIN.
Ó DOMHNAILLIrish
Irish Gaelic form of O'DONNELL.
Ó DONNCHADHAIrish
Irish Gaelic form of DONOGHUE.
Ó DONNDUBHÁINIrish
Irish Gaelic form of DONOVAN.
O'DONNELLIrish
Anglicized form of Irish Ó Domhnaill meaning "descendant of DOMHNALL".
Ó DONNGHAILEIrish
Irish Gaelic form of DONNELLY.
O'DOYLEIrish
Variant of DOYLE.
Ó DUBHÁINIrish
Means "descendant of DUBHÁN".
Ó DUBHGHAILLIrish
Irish Gaelic form of DOYLE.
Ó DUBHSHLÁINIrish
Irish Gaelic form of DOLAN.
Ó DUBHSHLÁINEIrish
Gaelic form of DELANEY (2).
Ó DUBHTHAIGHIrish
Irish Gaelic form of DUFFY (1).
Ó FAOLÁINIrish
Irish Gaelic form of WHELAN.
Ó FEARGHAILIrish
Irish Gaelic form of FARRELL.
Ó FIONNAGÁINIrish
Irish Gaelic form of FINNEGAN.
Ó FIONNÁINIrish
Irish Gaelic form of FANNON.
Ó FLANNAGÁINIrish
Irish Gaelic form of FLANAGAN.
Ó FLOINNIrish
Irish Gaelic form of FLYNN.
Ó FOGHLADHAIrish
Irish Gaelic form of FOLEY.
Ó FRIGHILIrish
Irish Gaelic form of FRIEL.
Ó GALLCHOBHAIRIrish
Irish Gaelic form of GALLAGHER.
Ó GORMÁINIrish
Irish Gaelic form of GORMAN (2).
O'GORMANIrish
Variant of GORMAN (2).
Ó HALLMHURÁINIrish
Irish Gaelic form of HALLORAN.
O'HANEGANIrish
Variant of O'HANNAGAIN.
O'HANIGANIrish
Variant of O'HANNIGAIN.
O'HANNAGAINIrish
From Irish Ó hAnnagáin, which means "descendant of Annagán". The given name Annagán was a diminutive of Annadh meaning "delay".
Ó HANNAGÁINIrish
Irish Gaelic form of O'HANNAGAIN.
O'HANNAGANIrish
Variant of O'HANNAGAIN.
O'HANNEGANIrish
Variant of O'HANNAGAIN.
O'HANNIGAINIrish
Variant of O'HANNAGAIN.
O'HANNIGANIrish
Variant of O'HANNAGAIN.
Ó HAODHAIrish
Irish Gaelic form of HAYES (2).
Ó HAONGHUISIrish
Irish Gaelic form of HENNESSY.
O'HARAIrish
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 HEACHTHIGHEARNAIrish
Means "descendant of Eichthighearn", where the personal name Eichthighearn means "horse lord" in Gaelic.
Ó HEAGHRAIrish
Irish Gaelic form of O'HARA.
O'HEARNIrish
Anglicized form of Ó HEACHTHIGHEARNA.
Ó HÉIDEÁINIrish
Means "descendant of Éideán" in Irish. The given name Éideán is a diminutive of éideadh meaning "clothes, armour".
Ó HEIDHINIrish
Irish Gaelic form of HINES.
Ó HÉIDÍNIrish
Means "descendant of Éidín" in Irish. The given name Éidín is a diminutive of éideadh meaning "clothes, armour".
Ó HEIDIRSCEÓILIrish
Irish Gaelic form of DRISCOLL.
Ó HÍCIDHEIrish
Irish Gaelic form of HICKEY.
Ó HIFEARNÁINIrish
Irish Gaelic form of HEFFERNAN.
Ó HÓGÁINIrish
Irish Gaelic form of HOGAN.
Ó HUIGINNIrish
Irish Gaelic form of HIGGINS.
O'KANEIrish
Anglicized form of Ó CATHÁIN.
O'KEEFEIrish
Variant of KEEFE.
Ó LAOGHAIREIrish
Irish Gaelic form of O'LEARY.
Ó LEANNÁINIrish
Irish Gaelic form of LENNON.
O'LEARYIrish
From Irish Ó Laoghaire meaning "descendant of LAOGHAIRE".
Ó LOINGSIGHIrish
Irish Gaelic form of LYNCH.
Ó LUAINIrish
Irish Gaelic form of LANE (3).
Ó MADAIDHÍNIrish
Means "descendant of Madaihín", a given name derived from Irish madadh meaning "dog, mastiff".
Ó MÁILLEIrish
Means "descendant of a nobleman" from the Irish Gaelic mál.
O'MALLEYIrish
Anglicized form of Ó MÁILLE.
Ó MANACHÁINIrish
Irish Gaelic form of MONAHAN.
Ó MAOIL EOINIrish
Irish Gaelic form of MALONE.
Ó MAOIL RIAINIrish
Means "descendant of a follower of RÍAN", derived from Irish maol meaning "follower".
Ó MAOILSHEACHLAINNIrish
Means "descendant of MAOLSHEACHLANN" in Irish.
Ó MAOLÁINIrish
Irish Gaelic form of MULLEN.
Ó MAOL AODHAIrish
Means "descendant of a follower of Saint AODH". It is derived from Irish maol meaning "follower, servant".
Ó MAOL DHOMHNAIGHIrish
Irish Gaelic form of MOLONEY.
Ó MAOLMHUAIDHIrish
Means "descendant of Maolmhuadh", Maolmhuadh being a given name meaning "proud chief", derived from Gaelic maol meaning "chief" and muadh meaning "proud, noble".
Ó MAONAIGHIrish
Irish Gaelic form of O'MOONEY.
Ó MARCAIGHIrish
Irish Gaelic form of MARKEY.
Ó MATHGHAMHNAIrish
Irish Gaelic form of MAHONEY.
Ó MEADHRAIrish
Means "descendant of Meadhra". The given name Meadhra is derived from the Gaelic meadhar meaning "merry, happy".
Ó MEARAIrish
Variant of Ó MEADHRA.
Ó MOCHÁINIrish
Irish Gaelic form of MOHAN.
O'MOONEYIrish
From the Irish Ó Maonaigh meaning "descendant of Maonaigh". The given name Maonaigh means "wealthy".
Ó MUIRCHEARTACHIrish
Irish Gaelic form of MORIARTY.
Ó MUIREADHAIGHIrish
Irish Gaelic form of MURRAY (2).
Ó MURCHADHAIrish
Irish Gaelic form of MURPHY.
O'NEALIrish
From Irish ó Néill meaning "descendant of NEIL".
O'NEILLIrish
Variant of O'NEAL.
Ó NÉILLIrish
Irish Gaelic form of O'NEAL.
O'NIALLIrish
Variant of O'NEAL.
Ó NUALLÁINIrish
Irish Gaelic form of NOLAN.
Ó RABHARTAIGHIrish
Irish Gaelic form of RAFFERTY.
Ó RAGHAILLIGHIrish
Means "descendant of Raghailligh", an Irish given name of unknown meaning.
O'REILLYIrish
Anglicized form of Ó RAGHAILLIGH.
Ó RÍAGÁINIrish
Irish Gaelic form of REAGAN.
Ó RIAINIrish
Means "descendant of RÍAN".
Ó RINNIrish
Means "descendant of Rinn". The given name Rinn means "star" in Irish.
ORMANIrish
Anglicized form of Ó RUAIDH.
ORMONDIrish
Anglicized form of Ó RUAIDH.
ORMONDEIrish
Anglicized form of Ó RUAIDH.
Ó RODAGHIrish
Means "descendant of Rodach" in Irish. The given name Rodach is derived from from Irish rod meaning "spirited, furious".
Ó RUADHÁINIrish
Means "descendant of RUADHÁN" in Irish.
Ó RUAIDHIrish
Means "descendant of RUADH" in Irish.
Ó SCOLAIDHEIrish
Means "descendant of the scholar" from Irish scholaidhe.
Ó SÉAGHDHAIrish
Means "descendant of SÉAGHDHA".
Ó SEANÁINIrish
Irish Gaelic form of SHANNON.
Ó SEIGHINIrish
Means "descendant of Seighin". The given name Seighin means "small hawk" from Old Irish séigene.
O'SHEAIrish
Anglicized form of Ó SÉAGHDHA.
Ó SÍODAIrish
Means "descendant of Síoda", a byname meaning "silk" in Irish.
Ó SIRIDEÁINIrish
Irish Gaelic form of SHERIDAN.
Ó SUAIRDIrish
Means "descendant of Suart" in Irish. Suart is derived from the Old Norse name SIGURD.
Ó SÚILEABHÁINIrish
Irish Gaelic form of SULLIVAN.
O'SULLIVANIrish
Variant of SULLIVAN.
Ó TADHGÁINIrish
Irish Gaelic form of TEAGAN.
Ó TAIDHGIrish
Irish Gaelic form of TEAGUE (1).
Ó TÍGHEARNAIGHIrish
Irish Gaelic form of TIERNEY.
O'TOOLEIrish
Anglicized form of Irish Ó Tuathail meaning "descendant of TUATHAL".
Ó TREASAIGHIrish
Irish Gaelic form of TRACEY (2).
Ó TUATHAILIrish
Irish Gaelic form of O'TOOLE.
PAYNEIrish, 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.
POWERSEnglish, Irish
Variant of POWER (1).
QUEENEnglish, 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.
QUIGGIrish
Variant of QUIGLEY.
QUIGLEYIrish
Anglicized form of Ó Coigligh meaning "descendant of Coigleach", a given name meaning "untidy".
QUINLANIrish
From Irish Ó Caoindealbháin, which means "descendant of Caoindealbhán", a given name meaning "comely form".
QUINNIrish
Anglicized form of Irish Ó Cuinn meaning "descendant of CONN".
QUIRKIrish
Variant of QUIRKE.
QUIRKEIrish
From chroi, a Gaelic word meaning "heart".
RAFFERTYIrish
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.
REAGANIrish
Anglicized form of Irish Ó Ríagáin meaning "descendant of RIAGÁN".
REGANIrish
Variant of REAGAN.
REILLYIrish
Anglicized form of Ó RAGHAILLIGH.
RILEY (2)Irish
Variant of REILLY.
RINNE (1)Irish
Anglicized form of Ó RINN.
ROWANIrish
Anglicized form of Ó RUADHÁIN.
RUANEIrish
Anglicized form of Ó RUADHÁIN.
RYANIrish
Anglicized form of Ó RIAIN, or else a simplified form of MULRYAN.
SCULLYIrish
Anglicized form of Ó SCOLAIDHE.
SEWARD (3)Irish
Anglicized form of Ó SUAIRD.
SHANNONIrish
From Irish Ó Seanáin which means "descendant of SEANÁN".
SHEAIrish
Anglicized form of Ó SÉAGHDHA.
SHEEDYIrish
Anglicized form of Ó SÍODA.
SHEEHYIrish
Anglicized form of the Gaelic given name SÍTHEACH.
SHEENANIrish
Variant of SHANNON.
SHERIDANIrish
From the Irish name Ó Sirideáin meaning "descendant of Sirideán". The given name Sirideán means "searcher".
SHINE (2)Irish
Anglicized form of Ó SEIGHIN.
SLANEIrish
Originally indicated a person from Slane, County Meath, Ireland, which is derived from the given name SLÁINE.
SLOANIrish
Patronymic name derived from the early Irish given name SLUAGHADHÁN.
SLOANEIrish
Variant of SLOAN.
SOWARDSEnglish, Irish
Possibly a variant of SEWARD (1) or SEWARD (3).
SULLIVANIrish
Anglicized form of the Irish name Ó Súileabháin which means "descendant of Súileabhán". The name Súileabhán means "little dark eye".
TAGGARTIrish, 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.
TEAGANIrish
Anglicized form of Irish Ó Tadhgáin meaning "descendant of TADHGÁN".
TEAGUE (1)Irish
Anglicized form of Irish Ó Taidhg meaning "descendant of TADHG".
TIERNEYIrish
From the Irish Ó Tíghearnaigh meaning "descendant of TIGHEARNACH".
TIGHEIrish
Anglicized form of Ó TAIDHG.
TOOLEIrish
Variant of O'TOOLE.
TRACEY (2)Irish
Anglicized form of Irish Ó Treasaigh meaning "descendant of TREASACH".
TRACYEnglish, Irish
Variant of TRACEY (1) or TRACEY (2).
TREACYIrish
Variant of TRACEY (2).
VINCENT (2)Irish
Anglicized form of Irish Mac Dhuibhinse meaning "son Duibhinse", a given name meaning "black island".
WALLACEScottish, 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.
WALSHEnglish, 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".
WHALENIrish
Variant of WHELAN.
WHELANIrish
Anglicized form of Irish Ó Faoláin meaning "descendant of FAOLÁN".