| Obalesh | Lord Shiva |
| Oha | Meditation, True knowledge |
| Ohas | Praise |
| Ojas | Body strength |
| Ojayit | Courageous |
| Om | Sacred syllable |
| Omanand | Joy of Om |
| Omarjeet | |
| Omav | Avatar of Om, Incarnation of God |
| Omesa | Lord of Om |
| Omesh | Lord of Om |
| Omeshwar | Lord of Om |
| Omja | Born of cosmic unity |
| Omkar | Sound of the sacred syllable |
| Omkara | One who has the form of OM |
| Omkarnath | Lord of Omkaar, Lord Shiva |
| Ompati | Master of Om |
| Omprakash | Light of Om |
| Omswaroop | Manifestation of divinity |
| Oojam | Enthusiasm |
| Oorjit | Powerful |
| Oppilmani | Purest of gems |
| Ori | Charitable king |
| Orion | Son of fire |
| Ottakoothan | Poet |
| Ovi | Holy message of Marathi saint |
| Oviyan | Artist |
