| 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 |
| Oreo | American cookie brand consisting of two chocolate wafers with white cream filling. | Male | |
| Oreo | American cookie brand consisting of two chocolate wafers with white cream filling. | Male | |
| Ozzy | From Osbert - Divinely bright warrior. | Male | |
| Paisley | church, cemetery | Female | Scottish |
| Panda | A bear like Chinese mammal, with distinct black and white markings | Male | |
| Papoose | | Unisex | Hebrew |
| Paris | Brand of perfume. | Female | |
| Patches | | Male | |
| Peach | | Unisex | |
| Peaches | Red, yellow skinned fleshy fruit | Female | English |
| Peaches | Red, yellow skinned fleshy fruit | Female | English |
| Peanut | Edible nuts eaten raw or roasted. | Unisex | |
| Peanut Butter | | Unisex | |
| Pearl | Precious jewel. A hard, rounded gem, usually white in colour | Female | Latin |
| Pebbles | after the character in 'The Flintstones' cartoons | Male | |
| Pee Wee | | Unisex | |
| Penelope | Dream weaver
| Female | Greek |
| Penny | Greek, weaver | Female | English |
| Pepper | A spice or condiment. | Male | Sanskrit |
| Perdita | lost | Female | Latin |
| Petra | rock, stone | Female | Greek |
| Petunia | trumpet-shaped flower | Female | English |
| Pharaoh | ruler | Male | Latin |