| Name | Meaning | Details |
|---|---|---|
| Olaf | "Ancestors Heir" | View Details |
| Olavi | Ancestor; Descendant | View Details |
| Ole | "Ancestors Heir" | View Details |
| Olin | "Ancestors Heir" | View Details |
| Olina | "Ancestors Heir" | View Details |
| Olive | Olive Or From The Olive Tree | View Details |
| Oliver | Descendant Of The Ancestor | View Details |
| Olivia | "Ancestors Descendant" | View Details |
| Olivier | "Elf Warrior Or Ancestors Descendant" | View Details |
| Olof | "Ancestors Heir" | View Details |
| Oluina | From The Family Of My Mother | View Details |
| Onan | Strength | View Details |
| Onyx | Black Gemstone | View Details |
| Orah | From Ora. | View Details |
| Orlando | From Glorious Land | View Details |