| Name | Meaning | Details |
|---|---|---|
| Onyekachukwu | Who Is Greater Than God? | View Details |
| Onyx | Black Gemstone | View Details |
| Oona | One | View Details |
| Oratilwe | Loved One | 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 |
| Otis | Wealth | View Details |
| Otón | Wealth | View Details |
| Otto | Wealth | View Details |
| Otylia | Wealth | View Details |
| Pace | Peaceful One | View Details |
| Pachacutec | One Who Changes The World | View Details |
| Pacheco | Noble One | View Details |
| Pahuac | One Who Flies | View Details |