| Name | Meaning | Details |
|---|---|---|
| October | Born In October | View Details |
| Oksana | Praise Be To God | View Details |
| Oktyabrina | October Revolution | View Details |
| Omarosa | My Beautiful Child | View 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 |
| Osborn | God Bear | View Details |
| Osbourne | God Bear | View Details |
| Osceola | Black Drink Bellower | View Details |
| Oscosh | The Bravest Of All | View Details |