| Name | M/F | Meaning |
|---|---|---|
| Orthia | ![]() |
Meaning : Used in : French, German, Greek |
| Ortygia | ![]() |
Meaning : Calypso's Island. Used in : Greek |
| Oryanna | ![]() |
Meaning : Used in : Greek, Latin |
| Oryna | ![]() |
Meaning : Peace. Used in : Greek |
| Osanna | ![]() |
Meaning : Praise. Used in : English, French, German, Greek, Latin, Australian, British |
| Otierit | ![]() |
Meaning : Used in : Greek |
| Otonia | ![]() |
Meaning : Used in : Greek |
| Ourania | ![]() |
Meaning : Heavenly Used in : Australian, Greek, Australian |