| Name | Meaning | Gender | Origin |
|---|
| Newton | new town | Male | English |
| Nicholas | victorious people | Male | Greek |
| Nigel | Black haired one. | Male | Irish |
| Niles | son of Neil | Male | Scandinavian |
| Noah | Comfort
| Male | Hebrew |
| Nolan | Noble
| Male | Irish |
| Norbert | blond hero | Male | |
| Norm | From The North | Unisex | English |
| Norma | the pattern | Female | English |
| Norman | man from the north | Male | English |
| Norton | From the north farm
| Male | English |
| Odysseus | full of wrath | Male | Greek |
| Olga | holy | Female | Russian |
| Olive | kind one; olive tree, peace. Symbol of peace. A small oval fruit. | Female | English |
| Oliver | The olive tree. The biblical olive tree symbolizes fruitfulness and beauty and dignity. Extending an olive branch signifies an offer of peace.
| Male | Latin |
| Opal | Australian gemstone of remarkable colours, usually red, blue or green | Female | Sanskrit |
| Opal | Australian gemstone of remarkable colours, usually red, blue or green | Female | Sanskrit |
| Orson | Little bear
| Male | Latin |
| Orvil | Gold town.
| Male | |
| Orville | Gold town.
| Male | |
| Oscar | God's spear.
| Male | English |
| Otto | Born eighth or wealthy
| Male | |
| Padfoot | | Unisex | |
| Pamela | honeyed | Female | English |
| Paul | small | Male | Latin |