| Name | Meaning | Details |
|---|---|---|
| Ondine | Wave Of Water | View Details |
| Onslow | Hill Of The Passionate One | View Details |
| Ooko | Born Outside The Hospital | View Details |
| Oormi | Flow Of Emotions | View Details |
| Orchid | Flowering Plant | View Details |
| Orea | Form Of Aurea | View Details |
| Oria | Form Of Aurea | View Details |
| Orianthe | Flower | View Details |
| Orien | The Orient | View Details |
| Oringo | He Who Likes The Hunt | View Details |
| Ormand | Descendent Of The Red One | View Details |
| Ormanda | Descendent Of The Red One | View Details |
| Ornella | Flowering Ash Tree | View Details |
| Ornice | Combination Of Ornella And Janice | View Details |
| Orquidea | Orchid Flower | View Details |