| Name | Meaning | Gender | Origin |
|---|
| Octavius | eighth | Male | Latin |
| Odessa | odyssey, journey, voyage | Female | Russian |
| 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 |
| Orson | Little bear
| Male | Latin |
| Paris | Brand of perfume. | Female | |
| Patience | | Female | |
| Patrick | Patrician: noble. Romans society was divided into plebeians: (commoners) and patricians: (aristocrats). Saint Patrick - patron saint of Ireland.
| Male | Latin |
| Patty | patrician | Female | English |
| Paul | small | Male | Latin |
| Paula | small | Female | Feminine |
| Pax | peaceful | Male | Latin |
| Payton | From the fighter's farm
| Female | English |
| Peace | Peaceful
| Male | Word |
| Percival | Hero of several Arthurian stories
| Male | |
| Peregrine | traveler, pilgrim | Male | Latin |
| Perry | French form of Peter
| Male | English |
| Petra | rock, stone | Female | Greek |
| Peyton | From The Fighter's Farm | Female | English |
| Poppy | Flower with four crumpled petals in red, orange or white colours | Female | Latin |
| Poppy | Flower with four crumpled petals in red, orange or white colours | Female | Latin |
| Portia | pig, hog or doorway | Female | Latin |
| Prima | first one | Female | Latin |
| Primrose | first rose | Female | English |
| Princeton | Principal one: first. The rock musician Prince.
| Male | English |