Irish Origin Surnames

MacThaoig Scottish Gaelic
Scottish Gaelic form of McCaig.

Mac Uileagóid Irish
Irish Gaelic form of McElligott.

Madden Irish
Anglicized form of Ó Madaidhín.

Madigan Irish
Anglicized form of Ó Madaidhín.

Mag Aonghuis Irish
Irish Gaelic form of McGuinness.

Magee Irish, Scottish
Anglicized form of Mac Aodha.

Mag Eochadha Irish
Irish Gaelic form of McGough.

Magorian Irish
Possibly a variant of McGowan or McGovern.

Mag Raith Irish, Scottish Gaelic
Gaelic form of McRae.

Mag Shamhradháin Irish
Irish Gaelic form of McGovern.

Mag Uidhir Irish
Irish Gaelic form of McGuire.

Maguire Irish
Variant of McGuire.

Mahoney Irish
Anglicized form of the Irish Ó Mathghamhna meaning "descendant of Mathgamain".

Malley Irish
Anglicized form of Ó Máille.

Mallon Irish
Variant of Malone.

Malloye Irish
Variant of Molloy.

Malone Irish
Anglicized form of Irish Ó Maoil Eoin meaning "descendant of a disciple of Saint John".

Manning 2 Irish
Anglicized form of Irish Ó Mainnín meaning "descendant of Mainchín".

Markey Irish
From the Irish Ó Marcaigh meaning "descendant of Marcach", a given name meaning "horse rider".

McAdams Scottish, Irish
Means "son of Adam" in Gaelic.

McAfee Scottish, Irish
Anglicized form of MacDhubhshìth.

McAlister Scottish, Irish
From Scottish Gaelic MacAlastair or Irish Gaelic Mac Alastair meaning "son of Alistair".

McBride Irish
Anglicized form of Mac Giolla Bhrighde.

McCabe Irish, Scottish
Means "son of Cába", where Cába is a byname meaning "cape, cloak" (from Latin cappa).

McCaig Scottish
Anglicized form of Scottish Gaelic MacThaoig meaning "son of Tadhg".

McCarthy Irish
Anglicized form of Irish Mac Cárthaigh meaning "son of Carthach".

McCauley Irish, Scottish
Anglicized form of Gaelic Mac Amhalghaidh or Mac Amhalghadha meaning "son of Amhalghaidh". The given name Amhalghaidh, from Old Irish Amalgaid, is of uncertain meaning.

McClain Scottish
Variant of McLain.

McCleary Irish
Anglicized form of Mac Cléirich.

McClellan Irish, Scottish
Variant of McClelland.

McClelland Irish, Scottish
From Gaelic Mac Giolla Fhaoláin meaning "son of the servant of Faolán".

McConnell Scottish, Irish
Derived from Gaelic MacDhòmhnaill (see MacDonald).

McCormick Irish, Scottish
From Gaelic Mac Cormaic meaning "son of Cormac".

McCoy Scottish
Anglicized form of MacAoidh.

McCracken Irish, Scottish
Anglicized form of Mac Reachtain, Ulster Irish variant of Mac Neachtain.

McCrae Scottish
Variant of McRae.

McCreery Irish, Scottish
Variant of McCrory.

McCrory Irish, Scottish
Anglicized form of Gaelic Mac Ruaidhrí meaning "son of Ruaidhrí".

McCulloch Scottish
Scottish form of McCullough.

McCullough Irish
Anglicized form of Irish Mac Cú Uladh meaning "son of Cú Uladh". The byname Cú Uladh means "hound of Ulster". This surname has also been associated with Old Irish cullach "boar".

McCune Irish
Anglicized form of Mac Eoghain.

McDaniel Scottish
Variant of MacDonald.

McDermott Irish
Anglicized form of Irish Mac Diarmada meaning "son of Diarmaid". The McDermotts were nobility in the Kingdom of Connaught, a province in Ireland.

McDevitt Irish
Anglicized form of Irish Mac Daibhéid meaning "son of Dáibhí".

McDonald Scottish
Variant of MacDonald.

McDougall Scottish
Variant of MacDougall.

McDowell Scottish
Variant of MacDougall.

McEachern Scottish
Anglicized form of Mac Eachairn.

McElligott Irish
Anglicized form of the Irish Gaelic name Mac Uileagóid meaning "son of Uileagóid", a diminutive of Uilleag.

McEwan Scottish
Anglicized form of MacEòghainn.

McFarland Irish, Scottish
Variant of McFarlane.

McFarlane Scottish, Irish
Anglicized form of Scottish Gaelic MacPhàrlain or Irish Gaelic Mac Pharlain meaning "son of Parthalán".

McFee Scottish, Irish
Anglicized form of MacDhubhshìth.

McGee Irish, Scottish
Anglicized form of Mac Aodha.

McGill Irish, Scottish
Anglicized form of Gaelic Mac an Ghoill meaning "son of the foreigner", derived from gall "foreigner".

McGinnis Irish
Variant of McGuinness.

McGough Irish
Variant of Gough 2.

McGovern Irish
Anglicized form of Irish Gaelic Mag Shamhradháin meaning "son of Samhradháin", a given name meaning "summer".

McGowan Irish
Anglicized form of Mac Ghabhann.

McGuinness Irish
Anglicized form of Irish Mag Aonghuis meaning "son of Aonghus".

McGuire Irish
Anglicized form of Irish Mag Uidhir meaning "son of Odhar", a given name meaning "pale-coloured".

McInnes Scottish
Variant of MacInnes.

McIver Scottish, Irish
Anglicized form of Gaelic MacIomhair meaning "son of Íomhar".

McKay Scottish
Anglicized form of MacAoidh.

McKee Scottish, Irish
Anglicized form of Mac Aodha.

McKeever Irish
Variant of McIver.

McKenna Irish, Scottish
Anglicized form of Gaelic Mac Cionaodha meaning "son of Cionaodh".

McKenzie Scottish
Variant of MacKenzie.

McKinley Scottish
Anglicized form of MacFhionnlaigh. This name was borne by the American president William McKinley (1843-1901), who was assassinated.

McKinney Irish, Scottish
Variant of McKenna.

McKowen Irish
Anglicized form of Mac Eoghain.

McLain Scottish
Variant of McLean.

McLean Scottish
Anglicized form of Gaelic MacGillEathain or MacGillEain meaning "son of the servant of Eòin".

McMahon Irish
Anglicized form of Irish Mac Mathghamhna meaning "son of Mathgamain".

McManus Irish
Anglicized form of Irish Mac Maghnuis meaning "son of Mághnus".

McNab Scottish, Irish
Anglicized form of Gaelic Mac an Aba meaning "son of the abbot".

McNabb Irish, Scottish
Variant of McNab.

McNamara Irish
From Irish Mac Conmara meaning "son of Conmara". The given name Conmara is composed of cú "hound" and muir "sea".

McNaughton Irish, Scottish
Anglicized form of Mac Neachtain.

McNeal Scottish
Variant of McNeil.

McNee Irish
Anglicized form of Mac Niadh.

McNeil Scottish
Anglicized form of Gaelic MacNèill meaning "son of Niall".

McNeill Scottish, Irish
Variant of McNeil.

McNeilly Scottish
Anglicized form of Gaelic Mac an Fhilidh meaning "son of the poet".

McNiel Scottish
Variant of McNeil.

McNiven Irish
Anglicized form of Mac Cnáimhín.

McPhee Scottish
Anglicized form of MacDhubhshìth.

McQueen Scottish
Anglicized form of Mac Shuibhne.

McRae Scottish
From Gaelic Mag Raith meaning "son of Rath", a given name meaning "prosperity" or "grace".

McReynolds Scottish, Irish
Means "son of Reynold" in Gaelic.

McSheehy Irish
Anglicized form of Irish Gaelic Mac Síthigh, meaning "son of Sítheach".

McTaggart Scottish
Variant of Taggart.

Meaney Irish
Variant of O'Mooney.

Merrill 1 English
Derived from the given name Muriel.

Milligan Irish
Anglicized form of the Irish Ó Maolagáin meaning "descendant of Maolagán", a given name derived from maol meaning "bald" or "tonsured".

Mohan Irish
Anglicized form of Irish Ó Mocháin meaning "descendant of Mochán".

Mollown Irish
Variant of Malone.

Molloy Irish
Anglicized form of Ó Maolmhuaidh or Ó Maol Aodha.

Moloney Irish
From Irish Ó Maol Dhomhnaigh meaning "descendant of a church servant".

Monaghan Irish
Variant of Monahan.

Monahan Irish
From Irish Ó Manacháin meaning "descendant of Manacháin". The given name Manacháin meant "little monk", from manach "monk" and a diminutive suffix.

Monday 3 Irish
Anglicized form of Mac Giolla Eoin. The last part of the surname was mistakenly taken as the Gaelic word for "Monday", Luain.

Monroe Scottish
Anglicized (typically American) form of Munro. It was borne by the American actress Marilyn Monroe (1926-1962).

Moon 3 Irish
Variant of Mohan.

Mooney Irish
Variant of O'Mooney.

Moran Irish
Anglicized form of Irish Ó Móráin meaning "descendant of Mórán", a given name meaning "great, large".

Moriarty Irish
From Irish Ó Muircheartach meaning "descendant of Muirchertach". This was the surname given by Arthur Conan Doyle to a master criminal in the Sherlock Holmes series.

Morris English, Irish, Scottish, Welsh
Derived from the given name Maurice.

Mullane Irish
Variant of Mullen.

Mullen Irish
From the Irish Ó Maoláin meaning "descendant of Maolán". The given name Maolán meant "devotee, servant, tonsured one".

Mulligan Irish
Variant of Milligan.

Mullins 2 Irish
Variant of Mullen.

Mulloy Irish
Variant of Molloy.

Mulrennan Irish
Anglicized form of Ó Maol Bhréanáin.

Mulryan Irish
Anglicized form of Ó Maoil Riain.

Munro Scottish
Designated a person who had originally lived near the mouth of the Roe River in Derry, Ireland. It is derived from Gaelic bun meaning "root, base" combined with the river's name.

Munroe Scottish
Anglicized (typically Canadian and American) form of Munro.

Murdoch Scottish
Scottish form of Murdock.

Murdock Irish
Derived from the given name Murchadh.

Murphy Irish
Anglicized form of Irish Ó Murchadha meaning "descendant of Murchadh". This is the most common Irish surname.

Murray 2 Irish
Anglicized form of Irish Ó Muireadhaigh meaning "descendant of Muireadhach".

Neal English
Derived from the given name Neil.

Neely Scottish
Variant of McNeilly.

Neil Scottish, English, Irish
Derived from the given name Neil.

Nelson 1 English
Means "son of Neil". This name was borne by the British admiral Horatio Nelson (1758-1805).

Neville English, Irish
From the names of towns in Normandy, variously Neuville or Néville, meaning "new town" in French.

Nevin 1 Irish
Anglicized form of Mac Naoimhín.

Nevin 2 Irish
Anglicized form of Mac Cnáimhín or Ó Cnáimhín.

Nielson English
Variant of Nelson 1.

Nigel English
Derived from the given name Neil.

Niles English
Means "son of Neil".

Niven Scottish
Anglicized form of Mac Naoimhín.

Nolan Irish
Anglicized form of Irish Ó Nualláin meaning "descendant of Nuallán".

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 Callahan.

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 Caolaidhe Irish
Irish Gaelic form of Keeley.

Ó Carra Irish
Means "descendant of Carra", Carra being a nickname meaning "spear".

Ó Catháin Irish
Means "descendant of Cathán".

Ó Cathaláin Irish
Irish Gaelic form of Callan.

Ó Cathasaigh Irish
Irish Gaelic form of Casey.

Ó Ceallacháin Irish
Irish Gaelic form of Callahan.

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 Coileán" in Irish.

Ó Comhraidhe Irish
Means "descendant of Comhraidhe", in which the given name Comhraidhe is of unknown meaning.

Ó Conaill Irish
Irish Gaelic form of Connell.

Ó Conaire Irish
Irish Gaelic form of Conroy.

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 Conchobar".

Ó Corcráin Irish
Irish Gaelic form of Corcoran.

Ó Corra Irish
Means "descendant of Corra" in Irish. The given name Corra means "spear".

Ó Corraidhín Irish
Irish Gaelic form of Curran.

Ó Cruadhlaoich Irish
Irish Gaelic form of Crowley 1.

Ó Cuaig Irish
Irish Gaelic form of Quigg.

Ó Cuana Irish
Irish Gaelic form of Cooney.

Ó Cuidighthigh Irish
Means "descendant of Cuidightheach" in Irish.

Ó Cuilinn Irish
Means "descendant of Cuileann", Cuileann being a nickname meaning "holly".

Ó Cuinn Irish
Irish Gaelic form of Quinn.

Ó Cuinneagáin Irish
Irish Gaelic form of Cunningham 2.

Ó Cuirc Irish
Irish Gaelic form of Quirke.

Ó Dálaigh Irish
Irish Gaelic form of Daly.

Ó Damháin Irish
Means "descendant of Damhán".

Ó Deasmhumhnaigh Irish
Irish Gaelic form of Desmond.

Ó Deoradháin 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
Irish Gaelic form of Duane.

Ó Dubhghaill Irish
Irish Gaelic form of Doyle.

Ó Dubhshláin Irish
Irish Gaelic form of Dolan.

Ó Dubhshláine Irish
Irish Gaelic form of Delaney 2.

Ó Dubhthaigh Irish
Irish Gaelic form of Duffy 1.

Ó Duibh Irish
Means "descendant of Dubh", Dubh being a byname meaning "dark".

Ó Fallamháin Irish
Irish Gaelic form of Fallon.

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 Flannghaile Irish
Irish Gaelic form of Flannery.

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 Gráda Irish
Irish Gaelic form of Grady.

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 Echthigern" in Irish.

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.

Ó Mainnín Irish
Irish Gaelic form of Manning 2.

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 Rian", derived from Irish maol meaning "follower".

Ó Maoilsheachlainn Irish
Means "descendant of Maolsheachlann" in Irish.

Ó Maolagáin Irish
Irish Gaelic form of Milligan.

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 Bhréanáin Irish
Means "descendant of a follower of Saint Brendan" in Irish.

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 Móráin Irish
Irish Gaelic form of Moran.

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 Proinntigh Irish
Irish Gaelic form of Prunty.

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 Riagáin Irish
Irish Gaelic form of Reagan.

Ó Riain Irish
Means "descendant of Rian".

Ó Rinn Irish
Means "descendant of Rinn". The given name Rinn means "star" in Irish.

Ó Ríoghbhárdáin Irish
Irish Gaelic form of Riordan.

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 Seachnasaigh Irish
Means "descendant of Seachnasach". The given name Seachnasach possibly means "elusive" in Irish.

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.