| Name | Meaning | Details |
|---|---|---|
| Ometaway | One Who Gambles | View Details |
| Onan | Strength | View Details |
| Onslow | Hill Of The Passionate One | View Details |
| Onyx | Black Gemstone | View Details |
| Oona | One | View Details |
| Oratilwe | Loved One | View Details |
| Ormand | Descendent Of The Red One | View Details |
| Ormanda | Descendent Of The Red One | View Details |
| Othniel | Strength/Lion Of God | View Details |
| Oz | Strength | View Details |
| Oziel | Having The Strength Of God | 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 |