| Name | Origin | Meaning | Gender | Save |
| Owain | ArthurianLegend | Son of Urien. | M | ![]() |
| Owain | English | Variant of Ewen: Variant of Eoghan or Eugene. | M | ![]() |
| Owain | Greek | Variant of Eugene: Well-born. Famous bearer: Prince Eugene of Savoy; American playwright Eugene O'Neill. | M | ![]() |
| Owain | Welsh | Young warrior. | M | ![]() |
| Owein | Welsh | Young warrior. | M | ![]() |
| Owen | Celtic | Young fighter. | M | ![]() |
| Owen | English | Variant of Ewen: Variant of Eoghan or Eugene. | M | ![]() |
| Owen | Greek | Variant of Eugene: Well-born. Famous bearer: Prince Eugene of Savoy. | M | ![]() |
| Owen | Welsh | Young warrior. Also can be a variant of Eugene: Well-born. | M | ![]() |
| Owena | Welsh | Feminine form of Owen: Young warrior. Also can be a variant of Eugene: Well-born. | F | ![]() |
| Owin | Celtic | Young fighter. | M | ![]() |
| Owin | Welsh | Young warrior. | M | ![]() |
| Owyn | Celtic | Young fighter. | M | ![]() |
| Owyn | Welsh | Young warrior. | M | ![]() |
| Owynn | Welsh | Wellborn. Form of Ewan. | M | ![]() |
| Oxa | Anglo-Saxon | Ox. | M | ![]() |
| Oxford | English | From the ox ford. | M | ![]() |
| Oxford | Shakespearean | 'King Henry the Sixth, Part III' Earl of Oxford. 'King Richard III' Earl of Oxford. | M | ![]() |
| Oxley | English | From the ox enclosure. | M | ![]() |
| Oxnaford | English | From the ox ford. | M | ![]() |
| Oxnaleah | English | From the ox enclosure. | M | ![]() |
| Oxnatun | English | From the ox farm. | M | ![]() |
| Oxton | English | From the ox farm. | M | ![]() |
| Oysten | Norse | Happy. | M | ![]() |
| Oz | English | Divine. | M | ![]() |
| Ozem | Biblical | That fasts, their eagerness. | M | ![]() |
| Ozi | Hebrew | Strong. | M | ![]() |
| Ozias | Biblical | Strength from the Lord | M | ![]() |
| Ozni | Biblical | An ear, my hearkening. | M | ![]() |
| Ozur | Norse | Son of Thorleif. | M | ![]() |
| Ozzi | Hebrew | Strong. | M | ![]() |
| Ozzie | English | Diminutive of Oswald: Divine power. | M | ![]() |
| Ozzie | Hebrew | Strong. | M | ![]() |
| Ozzy | English | Diminutive of Oswald: Divine power. | M | ![]() |