| Name | Meaning | Details |
|---|---|---|
| Orinda | Pine Trees | View Details |
| Orion | Mountain Dweller | View Details |
| Orlando | From Glorious Land | View Details |
| Orna | Pine | View Details |
| Ornella | Flowering Ash Tree | View Details |
| Ornice | Combination Of Ornella And Janice | View Details |
| Orozco | From Orozco | View Details |
| Orpheus | Unknown Meaning | View Details |
| Orquidea | Orchid Flower | View Details |
| Orrick | Sword Ruler | View Details |
| Ortega | From Ortega | View Details |
| Ortiz | Son Of Orti | View Details |
| Orwa | Trouble During Pregnancy | View Details |
| Osamu | Discipline | View Details |
| Osceola | Black Drink Bellower | View Details |