O
| Obalesh | Lord Shiva |
| Oha | Meditation, true knowledge |
| Ohas | Praise |
| Ojas | Lustre |
| Ojayit | Courageous |
| Om | The sacred syllable |
| Oma | Life giver |
| Omanand | Joy of om |
| Omar | An era |
| Omarjeet | Lord of OM |
| Omesh | Lord of the Om |
| Omeshwar | Lord of the Om |
| Omkarnath | Lord of Omkaar, shiva |
| Omja | Born of cosmic unity |
| Omkar | The sound of the sacred syllable |
| Ompati | Master of OM |
| Omprakash | Light of God |
| Omrao, Umrao | King |
| Omswaroop | Manifestation of divinity |
| Oppilan | Peerless gem |
| Oni | Shelter |
| Oppilmani | Purest of gems |
| Oojam | Enthusiasm |
| Oorjit | Powerful |
| Orion | Son of Fire |
| Ori | Charitable king |
| Orman | Seaman |
| Osman, Usman | Salve of God |
| Ottakoothan | Poet |
| Oviyan | Artist |
Girls Names
| Odathi | Refreshing |
| Oditi | Dawn |
| Oindrila | Name for the wife of Indra |
| Oja | Vitality |
| Ojal | Vision |
| Ojaswini | Lustrous |
| Olichudar | Brilliant |
| Olikodi | Brilliant |
| Olimani | Brilliant |
| Oliyarasi | Brilliant |
| Oma | Life giver |
| Omaja | Result of spiritual unity |
| Omala | Earth |
| Omana | A woman |
| Omisha | Goddess of birth & death |
| Omvati | Sacred, Having the power of Om |
| Omkareshwari | Goddess Parvati, Gauri |
| Omkari | Light |
| Onella | Light |
| Oni | Shelter |
| Oorja | The energy |
| Oparna | Parvathi |
| Orpita | Offering |
| Ojeeta | Born in the month of falgun |
| Oshma | Summer season |
| Oviya | Artist, Beautiful drawing |
