| Name | Meaning | Details |
|---|---|---|
| Onatah | Daughter Of The Earth | View Details |
| Ondine | Wave Of Water | View Details |
| Onslow | Hill Of The Passionate One | View Details |
| Onyx | Black Gemstone | 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 |
| Orlando | From Glorious Land | View Details |
| Ormand | Descendent Of The Red One | View Details |
| Ormanda | Descendent Of The Red One | View Details |
| Ornice | Combination Of Ornella And Janice | View Details |
| Ortiz | Son Of Orti | View Details |
| Osceola | Black Drink Bellower | View Details |
| Oscosh | The Bravest Of All | View Details |