| Name | Meaning | Details |
|---|---|---|
| Onufry | Grazing Donkey | View Details |
| Ooyu | Rainbow | View Details |
| Orane | Rising | View Details |
| Orchid | Flowering Plant | View Details |
| Orde | Point | View Details |
| Oren | Jerusalem Pine | View Details |
| Orestes | Mountain Dweller | View Details |
| Orinda | Pine Trees | View Details |
| Orion | Mountain Dweller | View Details |
| Orna | Pine | 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 |
| Osamu | Discipline | View Details |