| Name | Meaning | Gender | Origin |
|---|
| Nicholas | victorious people | Male | Greek |
| Nigel | Black haired one. | Male | Irish |
| Noah | Comfort
| Male | Hebrew |
| Nolan | Noble
| Male | Irish |
| Nora | Abbreviation of Eleanora light and Honora honor.
| Female | Irish |
| Norman | man from the north | Male | English |
| 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 |
| Olivia | Olive
| Female | 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 |
| Ophelia | Serpentine
| Female | Greek |
| Orion | Son of Fire
| Male | Greek |
| Orson | Little bear
| Male | Latin |
| Oscar | God's spear.
| Male | English |
| Otto | Born eighth or wealthy
| Male | |
| Owen | Young fighter
| Male | Welsh |
| Pansy | thought | Female | English |
| Pearl | Precious jewel. A hard, rounded gem, usually white in colour | Female | Latin |
| Penelope | Dream weaver
| Female | Greek |
| Penn | enclosure | Male | English |
| Penny | Greek, weaver | Female | English |
| Philippa | Lover of Horses. Variant of masculine Philipp.
| Female | Greek |
| Phineas | oracle; dark-skinned | Male | Hebrew |
| Phoebe | bright one | Female | Greek |