| Omkrishओमकृश | A blend of Om and Lord Krishna |
| Omnaओमना | A name meaning pure and sacred |
| Ompatiओमपति | A name meaning master of God. |
| Omprakashओमप्रकाश | Light of God; Light Of Om; Sacred light |
| Omswaroopओमस्वरूप | Manifestation of divinity |
| Omswarup | One who is the form of the divine. |
| Omvatiओमवती | Sacred, Having the power of Om |
| Omyshaओमीशा | A smile of the divine essence. |
| Onainओनैन | A name meaning one who is joyful. |
| Onalikaओनलिका | A name meaning a lotus flower. |
| Oniओनी | Born On Holy Ground; Shelter; Wanted. |
| Onimaओनिमा | One who is full of grace. |
| Onirओनीर | One who is full of light. |
| Onishओनीश | The lord of the mind. |
| Onkarओंकार | The divine sound of God. |
| Onneshaओन्नेशा | A quest or a search for. |
| Oojamऊजम | A name meaning joy and spirit. |
| Oorjaऊर्जा | Full of energy and strength. |
| Oorjitऊर्जित | Powerful; Powerful, strong |
| Oormila | †daughter of king janaka of mithila; the youger sister of sita; name of lakshman\'s wife |
| Opal | Jewel.; Opal (precious stone). Jewel names became popular in the 19th century.; From the Opal Gemstone; Precious Gem; A treasured jewel; resembling the iridescent gemstone |
| Oppilaa | A name meaning one without equal. |
| OppilaaChelvi | Unique Girl; See Oppilaa |
| OppilaaNangai | Unique Lady; See Oppilaa |
| OppilaMani | Peerless Gem; pron. oppilAmani |
| Oppilmaniओप्पिलमणि | A gem that has no equal match. |
| Ori | Charitable king; My light; Name of a Charitable King |
| Orpitaओर्पिता | A name meaning golden light. |
| Osheeओशि | One who is a source of great joy. |
| Oshinओशीन | One who is like a bright star. |
| Oshmaओशमां | A name meaning a summer season. |
| Oshmiओशमी | One who is a beautiful person. |
| Ottakoothan | Name of a Poet; Poet |
| Oushigऔशिग | The son of evening |
| Ovaisओवैस | A Companion of Prophet Mohammed |
| Oviओवी | Holy message of marathi saint |
| Oviaओवीए | A name meaning strength and power. |
| Ovinओवीन | A name meaning little lamb. |
| Ovishkarओवीश्कार | One who creates or invents. |
| Oviyaओविया | Artist, Beautiful drawing; Like a Beautiful Art |