| Obalesh | Lord Shiva |
| Ojas | Vitality |
| Ojayit | Courageous |
| Om | Primordial sound |
| Omair | Problem solver |
| Omar | Life; long living |
| Omeir | Long living |
| Omesh | Lord of the Om |
| Omeshwar | Lord of the Om |
| Omkar | Religious word OM |
| Omkarnath | Lord Shiva |
| Omprakash | Sacred light |
| Omran | Solid structure |
| Ossama | One of the names of the lion. |