Irish Origin Surnames

This is a list of surnames in which the origin is Irish. Irish is the Celtic language spoken in Ireland.

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O'Shaughnessy Irish
Anglicized form of Ó Seachnasaigh.

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 Sluaghadháin Irish
Irish Gaelic form of Sloan.

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 (Rare)
Irish Gaelic form of Teagan.

Ó Taidhg Irish
Irish Gaelic form of Teague 1.

Ó Téacháin Irish
Irish Gaelic form of Teahan.

Ó Tíghearnaigh Irish
Irish Gaelic form of Tierney.

O'Toole Irish
Anglicized form of Irish Ó Tuathail meaning "descendant of Túathal".

Ó Treasaigh Irish
Irish Gaelic form of Tracey 2.

Ó Tuathail Irish
Irish Gaelic form of O'Toole.

Power 1 English, Irish
From Old French Poier, indicating a person who came from the town of Poix in Picardy, France.

Prunty Irish
From Irish Ó Proinntigh meaning "descendant of Proinnteach", a given name probably derived from Irish bronntach meaning "generous".

Quickley 2 Irish
Variant of Quigley.

Quigg Irish
Anglicized form of Irish Ó Cuaig meaning "descendant of Cuaig", a given name of unknown meaning.

Quigley Irish
Anglicized form of Irish 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 "handsome form" (using a diminutive suffix).

Quinn Irish
Anglicized form of Irish Ó Cuinn meaning "descendant of Conn".

Quirk Irish
Variant of Quirke.

Quirke Irish
Anglicized form of Irish Ó Cuirc meaning "descendant of Corc", a given name meaning "heart".

Rae Scottish
Variant of McRae.

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 Riagáin meaning "descendant of Riagán". A famous bearer was the American president Ronald Reagan (1911-2004).

Reardon Irish
Variant of Riordan.

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.

Riordan Irish
From Irish Ó Ríoghbhárdáin meaning "descendant of Rígbarddán".

Rowan Irish
Anglicized form of Ó Ruadháin.

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 meaning "descendant of Seanán".

Shaughnessy Irish
Anglicized form of Ó Seachnasaigh.

Shaw 2 Scottish
From a given name or byname that was derived from Gaelic sitheach meaning "wolf" (Old Irish sídach).

Shea Irish
Anglicized form of Ó Séaghdha.

Sheach Scottish
Variant of Shaw 2.

Sheedy Irish
Anglicized form of Ó Síoda.

Sheehy Irish
Variant of McSheehy.

Sheenan Irish
Variant of Shannon.

Sheridan Irish
From the Irish name Ó Sirideáin meaning "descendant of Sirideán". The given name Sirideán possibly means "searcher".

Shine 2 Irish
Anglicized form of Ó Seighin.

Slane Irish
Originally indicated a person from Slane, County Meath, Ireland, which is derived from the given name Sláine.

Sloan Irish
From Irish Ó Sluaghadháin meaning "descendant of Sluaghadhán".

Sloane Irish
Variant of Sloan.

Sowards English, Irish
Possibly a variant of Seward 1 or Seward 3.

Sullivan Irish
Anglicized form of the Irish name Ó Súileabháin meaning "descendant of Súileabhán". The name Súileabhán means "dark eye".

Sweeney Irish
Anglicized form of Mac Suibhne.

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 (Rare)
Anglicized form of Irish Ó Tadhgáin meaning "descendant of Tadhgán".

Teague 1 Irish
Anglicized form of Irish Ó Taidhg meaning "descendant of Tadhg".

Teahan Irish
Anglicized form of Irish Ó Téacháin meaning "descendant of Téachán". The given name Téachán possibly means "fugitive".

Tierney Irish
From 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 of 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 Scottish hero William Wallace.

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".