| Name | Gender | Meaning | Favorites |
| Oriel | Girl | The Golden | |
| Orinda | Girl | Pine trees | |
| Orion | Girl | A hunter in greek mythology | |
| Orleans | Girl | Golden | |
| Orlee | Girl | The Lord is my Light | |
| Orlena | Girl | The Golden | |
| Orli | Girl | The light is mine | |
| Ormanda | Girl | Of the Sea | |
| Ornetta | Girl | Cedar tree | |
| Orpah | Girl | Fawn | |
| Orpita | Girl | Offering | |
| Orzora | Girl | God's Strength | |
| Osanna | Girl | Praise | |
| Oshma | Girl | Summer season | |
| Otylia | Girl | Lucky heroine | |
| Oviya | Girl | Artist, Beautiful drawing | |
| Owena | Girl | Well born | |
| Ozera | Girl | Treasure | |
