| Name | Meaning | Details |
|---|---|---|
| Oliver | Descendant Of The Ancestor | View Details |
| Olivia | "Ancestors Descendant" | View Details |
| Olivier | "Elf Warrior Or Ancestors Descendant" | View Details |
| Olsen | Son Of Olaf | View Details |
| Olson | Son Of Olaf | View Details |
| Oluina | From The Family Of My Mother | View Details |
| Olympia | Mountain Of The Gods | View Details |
| Oma | Giver Of Life | View Details |
| Omanand | Joy Of Om | View Details |
| Omarion | Combination Of Omar And -ion | View Details |
| Omer | Bundle Of Corn | View Details |
| Onatah | Daughter Of The Earth | View Details |
| Ondine | Wave Of Water | View Details |
| Onofre | Peace Warrior | View Details |
| Onslow | Hill Of The Passionate One | View Details |