| Name | Meaning | Details |
|---|---|---|
| Ortega | From Ortega | View Details |
| Ortiz | Son Of Orti | View Details |
| Oscosh | The Bravest Of All | View Details |
| Osiris | God Of The Dead | View Details |
| Osmond | God Protector | View Details |
| Osmundo | Protector | View Details |
| Ossie | Diminutive Form Of Names Beginning With Os | View Details |
| Otieno | Born At Night | View Details |
| Ouida | Famous Warrior | View Details |
| Oved | Worker | View Details |
| Overton | From The Riverbank Town | View Details |
| Owen | The Yew Tree Or Youth | View Details |
| Owena | Desire Born | View Details |
| Owino | Born With Umbilical Cord Around Neck | View Details |
| Oxford | From The Oak Valley | View Details |