Starting with letter O
| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 441 | Oxnaford | English | From the ox ford. | M | |
| 442 | Oxnaleah | English | From the ox enclosure. | M | |
| 443 | Oxnatun | English | From the ox farm. | M | |
| 444 | Oxton | English | From the ox farm. | M | |
| 445 | Oysten | Norse | Happy. | M | |
| 446 | Oz | English | Divine. | M | |
| 447 | Ozem | Biblical | That fasts, their eagerness. | M | |
| 448 | Ozi | Hebrew | Strong. | M | |
| 449 | Ozias | Biblical | Strength from the Lord | M | |
| 450 | Ozni | Biblical | An ear, my hearkening. | M | |
| 451 | Ozur | Norse | Son of Thorleif. | M | |
| 452 | Ozzi | Hebrew | Strong. | M | |
| 453 | Ozzie | English | Diminutive of Oswald: Divine power. | M | |
| 454 | Ozzie | Hebrew | Strong. | M | |
| 455 | Ozzy | English | Diminutive of Oswald: Divine power. | M | |