| Name | Meaning | Details |
|---|---|---|
| Olsen | Son Of Olaf | View Details |
| Olson | Son Of Olaf | View Details |
| Omar | Long Life | View Details |
| Omarion | Combination Of Omar And -ion | View Details |
| Ometaway | One Who Gambles | View Details |
| Omolara | Born At The Right Time | View Details |
| Oni | Born On Holy Ground | View Details |
| Onslow | Hill Of The Passionate One | View Details |
| Onufry | Grazing Donkey | View Details |
| Onur | Honor | View Details |
| Onyx | Black Gemstone | View Details |
| Ooko | Born Outside The Hospital | View Details |
| Oona | One | View Details |
| Oormi | Flow Of Emotions | View Details |
| Oraefo | Affectionate | View Details |
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