| Name | M/F | Meaning |
|---|---|---|
| Oana | ![]() |
Meaning : Meaning Unknown Used in : Romanian |
| Octavia | ![]() |
Meaning : Eighth Used in : English, French, German, Jamaican, Italian, Latin, Romanian, Shakespearean, American, African, Australian, British, Danish |
| Octavian | ![]() |
Meaning : Eighth Used in : Australian, British, English, French, German, Latin, Romanian |
| Olga | ![]() |
Meaning : Holy Used in : Finnish, French, German, Greek, Italian, Norse, Polish, Portuguese, Romanian, Russian, Scandinavian, Slavic, Slovenian, Swedish, Teutonic, American, Australian, Chinese, Czechoslovakian, Danish, Dutch |
| Olimpia,olympia | ![]() |
Meaning : From Mount Olympus Used in : Romanian |
| Olivia | ![]() |
Meaning : Olive Tree Used in : Australian, English, Finnish, French, German, Greek, Jamaican, Italian, Latin, Portuguese, Romanian, Shakespearean, Spanish, Swedish, American, Australian, Chinese, British, Danish, Dutch |
| Ovidiu | ![]() |
Meaning : Worker Used in : Australian, Romanian |