Surnames of Irish Origin

4,666 surnames found of Irish origin

Orourke
The surname O'Rourke is of Irish origin and is derived from the Gaelic name Ó Ruairc, meaning "descendant of Ruairc." Ruairc is a personal name that translates to "red-haired" or "red king." The O'......
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Orpen
The surname Orpen is of English and Irish origin. It is derived from the Old English word "orpin," meaning "yellow stonecrop," a type of plant. Alternatively, it may have originated from the Irish ......
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Orrin
The surname Orrin is of Irish origin and is derived from the Gaelic name "Orrin" or "Orran," which means "pale" or "fair-haired." It is a descriptive surname that was likely given to individuals wi......
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Oryan
The surname Oryan is of Irish origin and is derived from the Gaelic name Ó Riain, meaning "descendant of Rian." Rian is a personal name that is believed to have originated from the word "rí," meani......
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Osaile
The surname Osaile is of Irish origin and is derived from the Gaelic name Ó Sáile, meaning "descendant of Sáile." The name Sáile itself is believed to be derived from the word "sáileach," meaning "......
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Oscar
The surname Oscar is of Irish origin and is derived from the Gaelic personal name "Oscar," which means "deer lover" or "champion warrior." It is believed to have been introduced to Ireland by the N......
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Osha
The surname Osha is of Irish origin and is derived from the Gaelic name "Ó hEódhasa," meaning "descendant of Eódhasa." The name Eódhasa is believed to be a variant of the name Aodh, which means "fi......
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Oshaughnessey
The surname O'Shaughnessy is of Irish origin and is derived from the Gaelic name "Ó Seachnasaigh," meaning "descendant of Seachnasach." The name Seachnasach is believed to be derived from the Gaeli......
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Oshaughnessy
The surname O'Shaughnessy is of Irish origin and is derived from the Gaelic name "Ó Seachnasaigh," meaning "descendant of Seachnasach." The name Seachnasach is believed to be derived from the Gaeli......
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Oshay
The surname Oshay is of Irish origin and is derived from the Gaelic name "Ó Séaghdha," meaning "descendant of Séaghdha." Séaghdha is a personal name derived from the word "seaghdha," which translat......
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Surnames of Irish Origin

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