| Name | Meaning | Details |
|---|---|---|
| Oihane | From The Forest | View Details |
| Oisin | Little Deer | View Details |
| Oke | Deer Lover | View Details |
| Olavi | Ancestor; Descendant | 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 |
| Olliana | Oleander | View Details |
| Oluina | From The Family Of My Mother | View Details |
| Ominotago | Pleasant Voice | View Details |
| Ooko | Born Outside The Hospital | View Details |
| Opelenge | Slender | View Details |
| Ophrah | Young Deer | View Details |
| Orah | From Ora. | View Details |