| Name | Meaning | Gender | Origin |
|---|
| Misty | misty.
| Female | English |
| Misty | misty.
| Female | English |
| Moon | Moon | Female | American |
| Myrtle | a flower, symbol of victory | Female | Greek |
| Nizana | Blossom
| Female | Hebrew |
| Ocean | | Male | |
| Odin | Viking mythology: the allmighty god | Male | Old |
| 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 |
| Onyx | A gemstone with bands of different colours. | Male | |
| 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 |
| Orange | Round citrus fruit originating in Southeast Asia. | Female | Fruit |
| Orange | Round citrus fruit originating in Southeast Asia. | Female | Fruit |
| Orchid | | Female | |
| Pansy | thought | Female | English |
| Paprika | Spicy powder made from sweet red peppers. | Unisex | |
| Parker | cultivated land | Male | English |
| Parsley | Herb used for seasoning or as a garnish. | Unisex | |
| Peach | | Unisex | |
| Peaches | Red, yellow skinned fleshy fruit | Female | English |
| Peaches | Red, yellow skinned fleshy fruit | Female | English |
| Pearl | Precious jewel. A hard, rounded gem, usually white in colour | Female | Latin |
| Peony | flower name | Female | |