| Name | Meaning | Gender | Origin |
|---|
| Nardo | Strong: Hardy. Abbreviation Of Bernardo And Leonardo. | Male | English |
| Neal | Champion | Male | Gaelic |
| Ned | Wealth protector | Unisex | English |
| Neil | Champion | Male | Gaelic |
| Nelson | Son of Neal | Male | English |
| Neon | | Unisex | Hebrew |
| Nero | Stern | Male | Latin |
| Neron | Strong | Male | English |
| Niall | Champion | Unisex | Gaelic |
| Nicholas | Victory of the people | Male | Greek |
| Noah | Rest | Male | Hebrew |
| Noel | Christmas | Male | English |
| Nolan | Chariot-fighter, champion | Male | Gaelic |
| Norman | Thor mind, Thor courage | Male | Gaelic |
| Oded | To encourage | Male | Hebrew |
| Odysseus | Full of wrath | Male | Greek |
| Olaf | Ancestor | Male | Norse |
| Oldrich | Powerful, Prosperous | Male | Czechoslovakian |
| Osbaldo | Uncertain, possibly divine power | Male | German |
| Osiris | Uncertain, perhaps throne of the eye | Unisex | Ancient Egyptian |
| Osvaldo | Uncertain, possibly divine power | Male | German |
| Oswald | Uncertain, possibly divine power | Male | German |
| Oswaldo | Uncertain, possibly divine power | Male | German |
| Otto | Wealth | Male | German |
| Owen | Well born, yew born | Male | Gaelic |
| Oz | Divine | Male | English |
| Pancrazio | Supreme Ruler, All Powerful | Male | Italian |
| Parker | Gamekeeper of a park | Male | English |
| Patrick | Patrician | Male | Latin |
| Paul | Small | Male | Latin |