| Name | Meaning | Details |
|---|---|---|
| Onika | Who Is Greater Than God? | View Details |
| Ontibile | God Is Watching Over Me | View Details |
| Onyekachukwu | Who Is Greater Than God? | View Details |
| Oralia | Created Name | View Details |
| Orana | Welcome | View Details |
| Orma | Free Men | View Details |
| Orpheus | Unknown Meaning | View Details |
| Osbert | God Bright | View Details |
| Osborn | God Bear | View Details |
| Osbourne | God Bear | View Details |
| Osgood | God Goth | View Details |
| Osinachi | Created Name | View Details |
| Osiris | God Of The Dead | View Details |
| Osma | Created Name | View Details |
| Osmond | God Protector | View Details |