| Name | Meaning | Details |
|---|---|---|
| Onslow | Hill Of The Passionate One | View Details |
| Ooko | Born Outside The Hospital | View Details |
| Ophelia | Helper | View Details |
| Ophelie | Helper | View Details |
| Oracle | Prophecy | View Details |
| Organza | Sheer | View Details |
| Orien | The Orient | View Details |
| Oringo | He Who Likes The Hunt | View Details |
| Ormand | Descendent Of The Red One | View Details |
| Ormanda | Descendent Of The Red One | View Details |
| Oscosh | The Bravest Of All | View Details |
| Osiris | God Of The Dead | View Details |
| Ourania | Heavenly | View Details |
| Overton | From The Riverbank Town | View Details |
| Ovid | Sheep Herder | View Details |