| Name | Meaning | Details |
|---|---|---|
| Osbert | God Bright | View Details |
| Osborn | God Bear | View Details |
| Osbourne | God Bear | View Details |
| Osgood | God Goth | View Details |
| Osiris | God Of The Dead | View Details |
| Osmond | God Protector | View Details |
| Osric | God Ruler | View Details |
| Osvaldo | God Rule | View Details |
| Oswald | God Rule | View Details |
| Oswaldo | God Rule | View Details |
| Othmar | Famous | View Details |
| Othniel | Strength/Lion Of God | View Details |
| Ouida | Famous Warrior | View Details |
| Oya | Wind Warrior Goddess | View Details |
| Oyewole | Born Of Good Standing | View Details |