| Olav | Man | Scandinavian Names |
| Olavi | Man | Scandinavian Names |
| Ole | Man | Scandinavian Names |
| Oleander | Man | Greek Names |
| Oleg | Man | Slavic Names |
| Olena | Woman | Slavic - Ukranian Names |
| Olencia | Woman | American Names |
| Olenna | Woman | American Names |
| Olesia | Woman | Russian Names |
| Oleta | Woman | American Names |
| Olga | Woman | Slavic Names |
| Oliana | Woman | Spanish Names |
| Olicia | Woman | American Names |
| Olimpio | Man | Spanish Names |
| Olin | Man | Scandinavian Names |
| Olina | Woman | Scandinavian Names |
| Olinda | Woman | American Names |
| Oline | Woman | Scandinavian Names |
| Olisa | Woman | American Names |
| Oliva | Woman | English Names |