| Name | Meaning | Details |
|---|---|---|
| Ornella | Flowering Ash Tree | View Details |
| Ornice | Combination Of Ornella And Janice | View Details |
| Orpheus | Unknown Meaning | View Details |
| Orville | Golden Town | View Details |
| Orwa | Trouble During Pregnancy | View Details |
| Osamu | Discipline | View Details |
| Osceola | Black Drink Bellower | View Details |
| Oscosh | The Bravest Of All | View Details |
| Osher | Happiness | View Details |
| Osiris | God Of The Dead | View Details |
| Ossie | Diminutive Form Of Names Beginning With Os | View Details |
| Othello | Of Unknown Meaning | View Details |
| Overton | From The Riverbank Town | View Details |
| Owen | The Yew Tree Or Youth | View Details |
| Oxford | From The Oak Valley | View Details |