| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| NjÁLl | - | Norse Mythology, Ancient Scandinavian, Icelandic | ||
| Nona (2) | - | English, Ancient Roman (Rare) | ||
| Nonus | - | Ancient Roman (Rare) | ||
| Norbert | NAWR-bert (German, Polish), NAWR-bərt (English, Dutch) | German, English, Dutch, French, Hungarian, Polish, Ancient Germanic | ||
| Norman | NAWR-mən (English) | English, Ancient Germanic | ||
| NuallÁN | - | Ancient Irish | ||
| Nymphodora | - | Ancient Greek | ||
| Nynniaw | - | Ancient Celtic | ||
| Octavia | ahk-TAYV-ee-ə (English) | English, Spanish, Ancient Roman | ||
| Octavianus | - | Ancient Roman | ||
| Octavius | ahk-TAYV-ee-əs (English) | Ancient Roman | ||
| Oda | O-dah (German) | German, Ancient Germanic | ||
| Odalric | - | Ancient Germanic | ||
| Oddr | - | Ancient Scandinavian | ||
| Odila | - | Ancient Germanic |