| Name | Meaning | Details |
|---|---|---|
| Onslow | Hill Of The Passionate One | View Details |
| Ontibile | God Is Watching Over Me | View Details |
| Onyekachukwu | Who Is Greater Than God? | View Details |
| Ooko | Born Outside The Hospital | View Details |
| Oraefo | Affectionate | View Details |
| Oralia | Created Name | View Details |
| Orenda | Great Spirit | View Details |
| Orhan | Great Leader | View Details |
| Ornice | Combination Of Ornella And Janice | View Details |
| Osias | Salvation | View Details |
| Osinachi | Created Name | View Details |
| Osma | Created Name | View Details |
| Otieno | Born At Night | View Details |
| Owena | Desire Born | View Details |
| Owino | Born With Umbilical Cord Around Neck | View Details |