| Name | Meaning | Details |
|---|---|---|
| Osvaldo | God Rule | View Details |
| Oswald | God Rule | View Details |
| Oswaldo | God Rule | View Details |
| Othello | Of Unknown Meaning | View Details |
| Othmar | Famous | View Details |
| Othniel | Strength/Lion Of God | View Details |
| Otieno | Born At Night | View Details |
| Otis | Wealth | View Details |
| Otón | Wealth | View Details |
| Ottavia | Eighth | View Details |
| Ottelien | Rich | View Details |
| Ottilia | Rich | View Details |
| Ottilie | Rich | View Details |
| Otto | Wealth | View Details |
| Ottoline | Rich | View Details |