| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 741 | Niall | Gaelic | Champion. | M | |
| 742 | Nigel | Gaelic | Champion From the Irish and Scottish Niall. | M | |
| 743 | Nijel | Gaelic | Champion From the Irish and Scottish Niall. | M | |
| 744 | Nola | Gaelic | Feminine of Nolan (noble) or variant abbreviation of Fenella from Fiona: fair. | F | |
| 745 | Nolan | Gaelic | Famous. | M | |
| 746 | Nolana | Gaelic | Feminine of Nolan (noble) or variant abbreviation of Fenella from Fiona: fair. | F | |
| 747 | Noland | Gaelic | Famous. | M | |
| 748 | Nuala | Gaelic | Variant of Fenella: White shoulder. From Fionnghuala or Fionnuala. | F | |
| 749 | Nuallan | Gaelic | Famous. | F | |
| 750 | Nuallan | Gaelic | Famous. | M | |
| 751 | Nygel | Gaelic | Champion From the Irish and Scottish Niall. | M | |
| 752 | Odharnait | Gaelic | Pale. | F | |
| 753 | Odharnait | Gaelic | Pale. | M | |
| 754 | Odran | Gaelic | Pale. | M | |
| 755 | Onora | Gaelic | Honor. | F | |
| 756 | Oran | Gaelic | Pale. | M | |
| 757 | Oren | Gaelic | Pale. | M | |
| 758 | Orin | Gaelic | Pale. | M | |
| 759 | Orran | Gaelic | Pale. | M | |
| 760 | Orren | Gaelic | Pale. | M | |