| Gender | Baby Name | Meaning |
|---|---|---|
  | Obama | Slightly bent |
| Obert | Noble bright |
| Oded | To Encourage |
| Odele | Wealth |
| Odetta | Wealth |
| Odette | Wealth |
| Odile | Wealthy |
| Ogen | Anchor |
| Olathe | Lovely, Beautiful |
| Oleta | Truth |
| Olga | Holy |
| Oliva | Olive |
| Oliver | Olive tree |
| Olivia | Olive tree |
| Olivier | Olive tree |
| Olympe | Olympian |
| Olympia | Mountain of the Gods |
| Omar | Long Life, Popular, Flourishing |
| Omari | Speaker, Chief |
| Opal | Precious gem |
