| Name | Pronunciation | Meaning | English Spelling | Gender |
|---|---|---|---|---|
| Nannid, Ninnidh | (NEEN-a) | M | ||
| Nárbflaith, Nárbhfhlaith, Nárbhla | (NARV-la) | F | ||
| Nath-í, Naithí | (NAH-hee) | M | ||
| Necht, Neacht | (NACHT) | F | ||
| Nechtan, Neachtan | (NACHT-an) | Naughton, Norton | M | |
| Néde, Néidhe | (NEY) | M | ||
| Ném, Néamh | (NEEV) | brightness | F | |
| Nemon, Neamhain | (NAV-in) | battle-fury | F | |
| Némnach, Néamhnach | (NEEV-nach) | F | ||
| Ness, Neas, Neassa | (NESS, NESSA) | Nessa | F | |
| Nessán, Neasán | (ness-AWN) | Nessan | M | |
| Niall | (NEE-all, NYE-all) | Neill | M | |
| Niallán | (NEEL-awn) | Nealon | M | |
| Niam, Niamh | (NEEV) | brightness | F | |
| Nioclás, Nicol | (NEE-klas) | borrowing of Nicholas | M | |
| Nóe | (NO-ah) | borrowing of Biblical Noah | M | |
| Noíse, Naoise | (NEE-sha) | M | ||
| Nuadu, Nuadha | (NOO-a) | M |