| Name | Meaning | Details |
|---|---|---|
| Oliver | Descendant Of The Ancestor | View Details |
| Olivia | "Ancestors Descendant" | View Details |
| Olivier | "Elf Warrior Or Ancestors Descendant" | View Details |
| Olliana | Oleander | View Details |
| Olof | "Ancestors Heir" | View Details |
| Olympe | Olympian | View Details |
| Omarion | Combination Of Omar And -ion | View Details |
| Ominotago | Pleasant Voice | View Details |
| Ondrea | Manly | View Details |
| Onika | Who Is Greater Than God? | View Details |
| Onslow | Hill Of The Passionate One | View Details |
| Onyekachukwu | Who Is Greater Than God? | View Details |
| Oorjita | Powerful Woman | View Details |
| Opaque | Not Transparent | View Details |
| Orchid | Flowering Plant | View Details |