| Name | Meaning | 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 |
| Osman | Tender As A Youth | View Details |
| Ossie | Diminutive Form Of Names Beginning With Os | View Details |
| Owain | Youth | View Details |
| Owen | The Yew Tree Or Youth | View Details |
| Ozzie | Diminutive Form Of Names Beginning With Os | View Details |
| Ozzy | Diminutive Form Of Names Beginning With Os | View Details |
| Pallas | Youth | View Details |