| # | Name | Origin | Meaning | Gender | Save |
|---|---|---|---|---|---|
| 5121 | Orton | English | From the shore farm. | M | |
| 5122 | Ortun | English | From the shore farm. | M | |
| 5123 | Orva | English | Special friend. | F | |
| 5124 | Orval | English | Spear strength. | M | |
| 5125 | Orvil | English | Spear strength. | M | |
| 5126 | Orville | English | Spear strength. | M | |
| 5127 | Orvin | English | Spear friend. | M | |
| 5128 | Orvyn | English | Spear friend. | M | |
| 5129 | Orwald | English | Spear strength. | M | |
| 5130 | Os | English | Divine. | M | |
| 5131 | Osbart | English | Divinely brilliant. | M | |
| 5132 | Osbeorht | English | Divinely brilliant. | M | |
| 5133 | Osbert | English | Divinely brilliant. | M | |
| 5134 | Osborn | English | Divine warrior. | M | |
| 5135 | Osborne | English | Variant of Osborn: Divine warrior. | M | |
| 5136 | Osbourne | English | Divine warrior. | M | |
| 5137 | Osburn | English | Divine warrior. | M | |
| 5138 | Osburt | English | Divinely brilliant. | M | |
| 5139 | Oscar | English | Divine spear; God's spear. Famous Bearer: poet Oscar Wilde (1854-1900), who was put on trial and imprisoned for homosexuality. | M | |
| 5140 | Osman | English | Godly protection. | M | |