| Nolan | Irish | Transferred use of the surname, whi.. |  |  |
| Nollaig | Irish | Gaelic form of Noelle (Christmas). .. |  | |
| Nora | Irish | Gaelic form of Nora, a name that or.. | | |
| Nora | Irish | Gaelic form of Nora, a name that or.. | | |
| Noreen | Irish | Irish diminutive form of Nora forme.. | | |
| Norlene | Irish | Elaboration of Nora. See Nora, |  | |
| Notii | Irish | A pet name for Nora, meaning "honor.. | | |
| Nuala | Irish | A short form of Fionnula, which m.. | | |
| Odharnait | Irish | Derived from the diminutive form of.. | | |
| Odhran | Irish | Diminutive form of odhar (pale gree.. | | |
| Odran | Irish | Meaning "pale green one." Derived p.. | | |
| Oghe | Irish | Anglicized form of the Gaelic Eocha.. | | |
| Ohnicio | Irish | Irish form of Honor (honor). See H.. | | |
| Oibhe | Irish | Meaning "olive."
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| Oisin | Irish | Diminutive form of os (a deer): hen.. | | |
| Oona | Irish | An ancient Irish name meaning ".. | | |
| Oran | Irish | Anglicized form of Odhran (little p.. | | |
| Orihlaith | Irish | Old name meaning "golden lady." Or-.. | | |
| Orla | Irish | Anglicized form of Orfhlaith (golde.. | | |
| Orlaith | Irish | Anglicized form of Orfhlaith (golde.. | | |
| Ornat | Irish | Anglicized form of Odharnait (littl.. | | |
| Oscar | Irish | Derived from the Gaelic oscar (cham.. |  | |
| Ossian | Irish | Anglicized form of Oisin (fawn). Se.. | | |
| Owen | Irish | Anglicized form of Eoghan (well-bor.. | | |
| Owney | Irish | Meaning "elderly." | | |
| Paddy | Irish | Popular pet form of Patrick. Padhra.. | | |
| Padraig | Irish | Irish form of Patrick (a patrician,.. | | |
| Padraigin | Irish | Gaelic form of Patricia (a patricia.. | | |
| Paili | Irish | Irish form of Polly, a pet form of .. | | |
| Parlan | Irish | Anglicized form of Parthalan, the G.. | | |
| Parthalon | Irish | Gaelic form of Bartholomew (son of .. | | |
| Patricia | Irish | Popular feminine form of Patrick,.. | | |
| Patrick | Irish | Derived from the Latin patricius (a.. | | |
| Paul | Irish | From the Latin Paulus, which origin.. | | |
| Pauline | Irish | A borrowing from the French and Eng.. | | |
