| Name | M/F | Meaning |
|---|---|---|
| Oanez | ![]() |
Meaning : Used in : French, French |
| Oguz | ![]() |
Meaning : In Hungarian meaning is : arrow Used in : Australian, Turkish, German, Hungarian |
| Oinatz | ![]() |
Meaning : Used in : Basque |
| Oiñaz | ![]() |
Meaning : Used in : Basque |
| Oktawiusz | ![]() |
Meaning : Eighth Born Used in : Polish |
| Olaf-lutz | ![]() |
Meaning : Used in : German |
| Ometz | ![]() |
Meaning : Used in : Hebrew |
| Omez | ![]() |
Meaning : Used in : French |
| Opecz | ![]() |
Meaning : Used in : German |
| Opicz | ![]() |
Meaning : Used in : German |
| Oquz | ![]() |
Meaning : Used in : Australian |
| Oriolz | ![]() |
Meaning : Used in : British, English |
| Orkatz | ![]() |
Meaning : Used in : Basque |
| Oroitz | ![]() |
Meaning : Used in : Basque |
| Oskar-franz | ![]() |
Meaning : Used in : German |
| Oskitz | ![]() |
Meaning : Used in : Basque |
| Osoitz | ![]() |
Meaning : Used in : Basque |
| Ostasz | ![]() |
Meaning : Used in : Greek, Polish |
| Ottheinz | ![]() |
Meaning : Used in : German |
| Otto-fritz | ![]() |
Meaning : Used in : German |
| Otto-heinz | ![]() |
Meaning : Used in : German |
| Oyuz | ![]() |
Meaning : Used in : Turkish |