| Name | Meaning | Details |
|---|---|---|
| Oakes | Dweller By The Oak Tree | View Details |
| Oakley | From The Oak Tree Field | View Details |
| October | Born In October | View Details |
| Ofek | Horizon | View Details |
| Ogen | Anchor | View Details |
| Oihane | From The Forest | View Details |
| Okoth | Born When It Was Raining | View Details |
| Ola | "Ancestors Heir" | View Details |
| Olabisi | Increased Honors | View Details |
| Olaf | "Ancestors Heir" | View Details |
| Olaniyi | Glory In Wealth | View Details |
| Olavi | Ancestor; Descendant | View Details |
| Ole | "Ancestors Heir" | View Details |
| Oleander | Evergreen Tree | View Details |
| Olin | "Ancestors Heir" | View Details |
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