| Name | Meaning | Details |
|---|---|---|
| Onyekachukwu | Who Is Greater Than God? | View Details |
| Onyx | Black Gemstone | View Details |
| Ooko | Born Outside The Hospital | View Details |
| Oona | One | View Details |
| Oratilwe | Loved One | View Details |
| Orea | Form Of Aurea | View Details |
| Oria | Form Of Aurea | 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 |
| Ossie | Diminutive Form Of Names Beginning With Os | View Details |
| Overton | From The Riverbank Town | View Details |
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