| Name | Meaning | Gender | Origin |
|---|
| 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 |
| Orchid | | Female | |
| Orla | Irish name meaning golden princess | Female | Irish |
| Pamela | honeyed | Female | English |
| Patience | | Female | |
| Payton | From the fighter's farm
| Female | English |
| Pearl | Precious jewel. A hard, rounded gem, usually white in colour | Female | Latin |
| Pele | Hawaiian volcano goddess. | Female | Hawaiian |
| Penelope | Dream weaver
| Female | Greek |
| Penny | Greek, weaver | Female | English |
| Perdy | | Unisex | |
| Petra | rock, stone | Female | Greek |
| Petula | | Female | |
| Petunia | trumpet-shaped flower | Female | English |
| Phaedra | Glowing | Female | Greek |
| Philomena | song lover, friend, lover of the moon | Female | Greek |
| Phoebe | bright one | Female | Greek |
| Phoebe | bright one | Female | Greek |
| Phyllis | A green branch.
| Female | Greek |
| Pierce | rock | Unisex | |
| Pixie | A fairy like creature. Playful and mischievous | Female | |
| Pixie | A fairy like creature. Playful and mischievous | Female | Swedish |
| Poppy | Flower with four crumpled petals in red, orange or white colours | Female | Latin |