| Name | M/F | Meaning |
|---|---|---|
| Oso | ![]() |
Meaning : Bear Used in : Finnish |
| Osogo | ![]() |
Meaning : The Osogo Bird Attended The Birth (was Seen) Used in : African, Kenyan |
| Osorio | ![]() |
Meaning : The Greatest Used in : Portuguese |
| Ostrogotho | ![]() |
Meaning : Used in : Gothic |
| Osvaldo | ![]() |
Meaning : God's Power Used in : American, Australian, Chinese, British, English, French, German, Italian, Latin, Portuguese |
| Oswaldo | ![]() |
Meaning : Divine Power. Used in : American, Chinese, British, English, German, Teutonic |
| Otaviano | ![]() |
Meaning : Used in : Australian |
| Otavio | ![]() |
Meaning : Eighth Used in : Portuguese |
| Otello | ![]() |
Meaning : Used in : Australian, French, German, Italian |
| Otero | ![]() |
Meaning : Used in : German |
| Othello | ![]() |
Meaning : In german meaning is : Prosperous. Used in : Australian, German, Shakespearean |
| Othenio | ![]() |
Meaning : Used in : German |
| Othiambo | ![]() |
Meaning : Born Late In The Evening Used in : African, Kenyan |
| Othieno | ![]() |
Meaning : Used in : African |
| Othmaro | ![]() |
Meaning : Used in : Australian |
| Otho | ![]() |
Meaning : Wealthy Used in : American, German, Latin |
| Otieno | ![]() |
Meaning : Born At Night Used in : African, Kenyan |
| Otilio | ![]() |
Meaning : Used in : German |
| Otito | ![]() |
Meaning : Used in : African, African |
| Otito | ![]() |
Meaning : Used in : African, African |
| Oto | ![]() |
Meaning : In Teutonic meaning is : Rich. Used in : African, Czechoslovakian, German, Teutonic |
| Otoahnacto | ![]() |
Meaning : Bull Bear. Used in : Native American |
| Otohiko | ![]() |
Meaning : Used in : Japanese |
| Otojiro | ![]() |
Meaning : Used in : Japanese |
| Otoko | ![]() |
Meaning : Used in : Japanese |
| Otomaro | ![]() |
Meaning : Used in : Japanese |
| Otorino | ![]() |
Meaning : Used in : Australian |
| Otrmondo | ![]() |
Meaning : French Form Of Herman : Army Man. Used in : French |
| Otsando | ![]() |
Meaning : Used in : Basque |
| Otsinto | ![]() |
Meaning : Used in : Bengali |
| Otso | ![]() |
Meaning : Bear Used in : Finnish |
| Otsoko | ![]() |
Meaning : Used in : Basque |
| Otsuko | ![]() |
Meaning : Used in : Japanese |
| Ottaviano | ![]() |
Meaning : Used in : Australian, French, Italian, Latin |
| Ottavio | ![]() |
Meaning : In latin meaning is : Born eighth Used in : Australian, French, Italian, Latin |
| Ottilio | ![]() |
Meaning : Used in : Australian |
| Ottilo | ![]() |
Meaning : Used in : Australian |
| Ottinello | ![]() |
Meaning : Used in : Italian |
| Otto | ![]() |
Meaning : Wealth, Fortune. Used in : American, Australian, Japanese, British, Danish, Dutch, English, Finnish, French, German, Italian, Polish, Swedish, Teutonic |
| Ottobono | ![]() |
Meaning : Used in : Italian |
| Ottobuono | ![]() |
Meaning : Used in : Italian |
| Ottolino | ![]() |
Meaning : Used in : Italian |
| Ottorino | ![]() |
Meaning : Used in : Australian, French, German, Italian |
| Ottoviano | ![]() |
Meaning : Used in : Australian |
| Ottovio | ![]() |
Meaning : Used in : Australian |
| Ouko | ![]() |
Meaning : Used in : Japanese |
| Ovidio | ![]() |
Meaning : Used in : Australian, French, Italian, Latin |
| Owino | ![]() |
Meaning : Born With The Cord Around Them Used in : Kenyan |
| Oyiofo | ![]() |
Meaning : Used in : African |
| Oyo | ![]() |
Meaning : Used in : African |
| Ozo | ![]() |
Meaning : Used in : African, African |
| Ozo | ![]() |
Meaning : Used in : African, African |
| Ozoro | ![]() |
Meaning : Used in : African |
| Ozuwarudo | ![]() |
Meaning : Used in : Japanese |