| Obalesh | Lord Shiva |
| Oha | Meditation, true knowledge |
| Ohas | Praise |
| Ojas | Vitality |
| Ojas | Body strength |
| Ojayit | Courageous |
| Om | Primordial sound |
| Omair | Problem solver |
| Omanand | Joy of om |
| Omesh | Lord of the Om |
| Omeshwar | Lord of the Om |
| Omja | Born of cosmic unity |
| Omkar | The sound of the sacred syllable |
| Omkarnath | Lord Shiva |
| Omprakash | Sacred light |
| Omran | Solid structure |
| Omrao, umrao | King |
| Omswaroop | Manifestation of divinity |
| Oojam | Enthusiasm |
| Oorjit | Powerful |
| Orman | Seaman |
| Osman, usman | Salve of god |
| Ossama | One of the names of the lion. |
| Ottakoothan | Poet |
| Oviyan | Artist |