| Name | Meaning |
| Odathi | Refreshing |
| Oditi | Dawn |
| Oeshi | Divine, Rose |
| Oindrila | Another Name For The Wife Of Indra |
| Oishani | Another name of young Goddess Parvati |
| Oishi | Divine |
| Oja | Vitality |
| Ojal | Splendour |
| Ojashwini |
| Ojasvi | Bright |
| Ojaswani | All day singing |
| Ojaswi | Bright |
| Ojaswini | lustrous |
| Ojaswita | Bright (Brightness), a person symbolic of brightness |
| Olevia | Like olive |
| OliChudar | Brilliant |
| Olikodi | Brilliant |
| Olimani | Brilliant |
| Oliyarasi | Brilliant |
| Om Sri | |
| Oma | Life giver |
| Omaira | Star |
| Omaja | Result of spiritual unity |
| Omala | Earth |
| Omana | a woman |
| Omi | |
| Omisha | Goddess of birth &death |
| Omkareshwari | Goddess Parvati, Gauri |
| Omkari | Religious Word Om |
| Omvati | Sacred, Having the power of Om |
| Omysha | Smile, Goddess of birth &death |
| Onalika | Image |
| Onella | Light |
| Oni | Shelter |
| Oorja | Energy, Affectionate, Daughter, Nutrition, Breath |
| Oppilaa | Unique |
| OppilaaChelvi | Unique Girl |
| OppilaaNangai | Unique Lady |
| Orpita | Offering |
| Oshee | Divine |
| Oshma | Summer season |
| Oshmi | Personality |
| Ovia | Painting |
| Oviya | Like a Beautiful Art |
| OviyaKodi | Vine in a Beautiful Art |
| Oviyam | Beautiful Art |
| Oyshee | Divine, Rose |
