| Name | Gender | Meaning | Favorites |
| Oakley | Girl | Field of oak trees | |
| Obelia | Girl | Needle | |
| Octavia | Girl | Eighth | |
| Odathi | Girl | Refreshing | |
| Odeda | Girl | Strong | |
| Odede | Girl | Strong | |
| Odele | Girl | Melody, Wealthy | |
| Odelia | Girl | I will praise god | |
| Odell | Girl | Otter | |
| Odetta | Girl | Ode | |
| Odette | Girl | Melody | |
| Oditi | Girl | Dawn | |
| Odoti | Girl | Dawn, Refreshing | |
| Ofira | Girl | Gold | |
| Ofra | Girl | Kid or Young goat | |
| Ohanna | Girl | God's Gracious Gift | |
| Ohelah | Girl | Tent | |
| Oindrila | Girl | Another Name for the Wife of Indra | |
| Oja | Girl | Vitality | |
| Ojasvi | Girl | Bright | |
