| Name | Meaning | Details |
|---|---|---|
| Orabella | Beautiful Gold | View Details |
| Oregon | Beautiful | View Details |
| Orsen | Bear Cub | View Details |
| Orsin | Bear Cub | View Details |
| Orsina | Bear | View Details |
| Orsino | Bear | View Details |
| Orson | Bear Cub | View Details |
| Osbert | God Bright | View Details |
| Osborn | God Bear | View Details |
| Osbourne | God Bear | View Details |
| Osceola | Black Drink Bellower | View Details |
| Osgood | God Goth | View Details |
| Osiris | God Of The Dead | View Details |
| Osmond | God Protector | View Details |
| Osric | God Ruler | View Details |