| Name | Meaning | Details |
|---|---|---|
| Onslow | Hill Of The Passionate One | View Details |
| Onur | Honor | View Details |
| Ooko | Born Outside The Hospital | View Details |
| Orah | From Ora. | View Details |
| Orea | Form Of Aurea | View Details |
| Oria | Form Of Aurea | View Details |
| Orien | The Orient | View Details |
| Oringo | He Who Likes The Hunt | 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 |
| Orozco | From Orozco | View Details |
| Orquidea | Orchid Flower | View Details |
| Orrick | Sword Ruler | View Details |