Starting with letter O
| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 161 | Owain | ArthurianLegend | Son of Urien. | M | |
| 162 | Owain | English | Variant of Ewen: Variant of Eoghan or Eugene. | M | |
| 163 | Owain | Welsh | Young warrior. | M | |
| 164 | Owen | Greek | Variant of Eugene: Well-born. Famous bearer: Prince Eugene of Savoy. | M | |
| 165 | Owen | Welsh | Young warrior. Also can be a variant of Eugene: Well-born. | M | |
| 166 | Owen | Welsh | Owen is a noble masculine name of Welsh origin, from Owain meaning "young warrior" or "noble." It conveys valor, loyalty, and leadership. Owen consistently ranks among the top boy names in the US, Canada, and the UK for its strong heritage and approachable sound. | M | |
| 167 | Owynn | Welsh | Wellborn. Form of Ewan. | M | |
| 168 | Oxford | English | From the ox ford. | M | |
| 169 | Oxford | Shakespearean | 'King Henry the Sixth, Part III' Earl of Oxford. 'King Richard III' Earl of Oxford. | M | |
| 170 | Oxley | English | From the ox enclosure. | M | |
| 171 | Oxnatun | English | From the ox farm. | M | |
| 172 | Ozem | Biblical | That fasts, their eagerness. | M | |
| 173 | Ozias | Biblical | Strength from the Lord | M | |
| 174 | Ozni | Biblical | An ear, my hearkening. | M | |
| 175 | Ozzie | English | Diminutive of Oswald: Divine power. | M | |