| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Neas | - | Irish Mythology | ||
| Neasa | NYAS-a, NAS-a | Irish, Irish Mythology | ||
| Neassa | - | Irish | ||
| Nechtan | - | Irish Mythology, Ancient Celtic | ||
| Neil | NEEL (English) | Irish, Scottish, English | ||
| Ness (1) | NES | Irish Mythology | ||
| Nessa (3) | NES-a | Irish, Irish Mythology | ||
| Nevan | NEV-an | Irish | ||
| Neve | - | Irish | ||
| Niall | NEE-al, NIE-al | Irish, Scottish | ||
| Niamh | NEEV | Irish, Irish Mythology | ||
| Ninian | - | Scottish, Irish, Ancient Celtic | ||
| NioclÁS | NIK-lahs | Irish | ||
| Nola | NO-lə | English, Irish | ||
| Nolan | NO-lan | Irish, English |