| Name | Gender | Meaning | Favorites |
| Ofra | Girl | Kid or Young goat | |
| Ohelah | Girl | Tent | |
| Oldooz | Girl | Persian azerbaijani name meaning star | |
| Omar | Boy | Speaker, Ultimate devotee | |
| Omari | Boy | Version of omar | |
| Omeir | Boy | Long living | |
| Omran | Boy | Solid structure | |
| Omrao | Boy | King | |
| Onslow | Boy | Hill of the passionate one | |
| Ora | Girl | Light | |
| Orah | Girl | Light | |
| Osama | Boy | Lion-like | |
| Osman | Boy | Tender Youth | |
| Ossama | Boy | One of the names of the lion | |
