| Name | Meaning | Details |
|---|---|---|
| Orlando | From Glorious Land | View Details |
| Orn | Eagle | View Details |
| Ornella | Flowering Ash Tree | View Details |
| Ornice | Combination Of Ornella And Janice | View Details |
| Orpheus | Unknown Meaning | View Details |
| Orwa | Trouble During Pregnancy | View Details |
| Osman | Tender As A Youth | View Details |
| Othello | Of Unknown Meaning | View Details |
| Outacite | Man Killer | View Details |
| Ovadia | Servant | View Details |
| Overton | From The Riverbank Town | View Details |
| Oyewole | Born Of Good Standing | View Details |
| Ozanka | Wall Germander Flower | View Details |
| Pacey | From Pacy In France | View Details |
| Pachacutec | One Who Changes The World | View Details |