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| NAME | MEANING | GENDER | ORIGIN |
| OSSIE | God\'s Divine Power | M� | English� |
| OSWALD | God of the Forest | M� | English� |
| OTHELLO | Prosperous | M� | Greek� |
| OTIENO | Born at Night | M� | African� |
| OTIS | One Who Hears Well | M� | Greek� |
| OTTO | Wealthy | M� | German� |
| OTYLIA | Lucky Heroine | F� | German� |
| OUIDA | Warrior Woman | F� | French� |
| OVA | Egg | F� | Latin� |
| OVERTON | The Upper Town | E� | English� |
| OVID | Egg Shaped | M� | Latin� |
| OVIDIO | Shepherd | M� | Spanish� |
| OWEN | Fortunate One, Born to Nobility | M� | Celtic/Gaelic� |
| OWENA | Well-born | F� | Welsh� |
| OWNAH | Form of UNA | F� | Celtic/Gaelic� |
| OYA | To Beckon | E� | Native American� |
| OZ | Strength | E� | Hebrew� |
| OZZIE | God\'s Divine Power | M� | English� |
| OZZY | God\'s Divine Power | M� | English� |
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