| # | Name | Origin | Meaning | Gender | Save |
| 1 | Oakden | Christian | From the oak tree valley. | M | ![]() |
| 2 | Oakes | Christian | From the oak. | M | ![]() |
| 3 | Oakley | Christian | From the oak - tree meadow. | M | ![]() |
| 4 | Obadiah | Biblical | Servant of the Lord | M | ![]() |
| 5 | Obal | Biblical | Inconvenience of old age. | M | ![]() |
| 6 | Obalesh | Tamil | Lord Shiva | M | ![]() |
| 7 | Obalesh | Telugu | Lord Shiva | M | ![]() |
| 8 | Obalesh | Bengali | Lord Shiva | M | ![]() |
| 9 | Obalesh | Gujarati | Lord Shiva | M | ![]() |
| 10 | Obalesh | Kannada | Lord Shiva | M | ![]() |
| 11 | Obalesh | Malayalam | Lord Shiva | M | ![]() |
| 12 | Obalesh | Marathi | Lord Shiva | M | ![]() |
| 13 | Obalesh | Punjabi-Sikh | Lord Shiva | M | ![]() |
| 14 | Obed | Biblical | A servant; workman | M | ![]() |
| 15 | Obed-edom | Biblical | Servant of Edom | M | ![]() |
| 16 | Oberon | Christian | In A Midsummer Night's Dream, Shakespeare altered the spelling to Auberon, king of the fairies, to Oberon. | M | ![]() |
| 17 | Oberon | Shakespearean | A Midsummer Night's Dream' King of the Fairies. | M | ![]() |
| 18 | Obil | Biblical | That weeps, who deserves to be bewailed. | M | ![]() |
| 19 | Oboth | Biblical | 'Dragons, fathers, desires' | M | ![]() |
| 20 | Ocelfa | Christian | From the high plain. | M | ![]() |
| 21 | Ocran | Biblical | A disturber, that disorders. | M | ![]() |
| 22 | Octavius | Shakespearean | Antony and Cleopatra'. Octavius Caesar, Roman triumvir. 'The Tragedy of Julius Caesar' Triumvir after Caesar's death, later Augustus Caesar, first emperor of Rome. | M | ![]() |
| 23 | Odale | Christian | Of the valley. | M | ![]() |
| 24 | Odam | Christian | Son in law. | M | ![]() |
| 25 | Odayle | Christian | Of the valley. | M | ![]() |