Baby Names Starting with O — with Meanings
194 O names with meanings for boys and girls, from every tradition — popular first, then by faith.
O names are round and open — Oliver, Olivia, Omar, Om, Oisín. English has embraced them recently; in Sanskrit the sacred syllable Om anchors the whole set.
Our catalogue has 194 names starting with O — 35% girls’ names, 57% boys’ names and 17 unisex. Most are 2 syllables long, and the meanings people choose most often in this letter are god & faith, strength & courage, life & new beginnings. The three most common O names across all traditions are Olivia, Oliver, Oscar.
If you are naming by birth star (nakshatra) or by the letter from the Guru Granth Sahib, this is your page: scroll to the tradition you follow, or open the finder pre-filtered to O and add your surname to hear how each name sounds.
boy girl unisex — tap a name to see it in the finder with your surname.
Popular names starting with O 25
- Olivia — olive tree
- Oliver — olive tree
- Oscar — deer lover, god spear
- Ömer — flourishing
- Owen — young warrior, noble
- Ocean — the sea
- Ochola — born after the father's death
- Octavian — eighth
- Odong — born in the bush
- Okello — born after twins
- Olive — the olive tree, peace
- Onyx — the black gemstone
- Opio — first-born of twins
- Oak — the oak tree, strength
- Oleg — holy, blessed
- Olivier — olive tree
- Olle — ancestor's descendant
- Om — the sacred sound
- Omar — flourishing, long-lived
- Oren — pine tree
- Ori — my light
- Orla — golden princess
- Ovidiu — sheep, the poet
- Oviya — painting, artist
- Owais — little wolf, the companion
Boy names starting with O 40
- Oliver — olive tree
- Oscar — deer lover, god spear
- Ömer — flourishing
- Owen — young warrior, noble
- Ochola — born after the father's death
- Octavian — eighth
- Odong — born in the bush
- Okello — born after twins
- Opio — first-born of twins
- Oak — the oak tree, strength
- Oleg — holy, blessed
- Olivier — olive tree
- Olle — ancestor's descendant
- Om — the sacred sound
- Omar — flourishing, long-lived
- Oren — pine tree
- Ori — my light
- Ovidiu — sheep, the poet
- Owais — little wolf, the companion
- Oded — to encourage
- Oisin — little deer
- Olof — ancestor's descendant
- Orazio — timekeeper
- Oreste — of the mountain
- Osama — lion
- Osamu — discipline, study
- Ottavio — eighth
- Ove — owner of a blade
- Oz — strength
- Oskar — deer lover, god spear
- Osman — the founder of the Ottomans
- Octave — eighth
- Odhran — little pale green one
- Ojaswin — lustrous, vigorous
- Olegario — holy
- Omkarnath — lord of om
- Omran — prosperity
- Onofre — always happy
- Orson — bear cub
- Omkar — the sacred syllable om
Girl names starting with O 40
- Olivia — olive tree
- Olive — the olive tree, peace
- Orla — golden princess
- Oviya — painting, artist
- Oksana — hospitality
- Olga — holy
- Opal — the iridescent gem
- Ornella — flowering ash tree
- Oana — god is gracious
- Oonagh — lamb
- Ottilie — prosperous in battle
- Oktyabrina — of October
- Ora — light
- Orly — my light
- Orsolya — little bear
- Osnat — belonging to god
- Obioma — kind heart
- Océane — ocean
- Oda — wealth
- Odile — wealthy
- Ofra — fawn
- Olimpia — from Mount Olympus
- Oliwia — olive tree
- Ophélie — help
- Oriana — golden, dawn
- Orit — little light
- Octavia — eighth
- Onyinye — gift
- Obdulia — servant of god
- Oja — vitality
- Ojaswini — radiant, energetic
- Oorja — energy
- Oriane — golden
- Ohemaa — queen
- Oindrila — wife of Indra
- Omolara — born at the right time
- Olwen — white footprint
- Omisha — goddess of birth and death
- Olina — joyful
- Ouafa — loyalty
Hindu names starting with O 16
- Om — the sacred sound
- Oviya — painting, artist
- Opal — the iridescent gem
- Ojaswin — lustrous, vigorous
- Omkarnath — lord of om
- Omkar — the sacred syllable om
- Ojas — vitality, splendour
- Onkar — the one supreme being
- Oja — vitality
- Ojaswini — radiant, energetic
- Oorja — energy
- Oindrila — wife of Indra
- Omisha — goddess of birth and death
- Ovi — holy message
- Ojasvi — bright, energetic
- Omansh — part of the sacred om
Muslim names starting with O 23
- Ömer — flourishing
- Omar — flourishing, long-lived
- Owais — little wolf, the companion
- Osama — lion
- Osman — the founder of the Ottomans
- Omran — prosperity
- Obaid — little servant
- Odai — the runner
- Oussama — lion
- Omid — hope
- Otabek — father lord
- Ouafa — loyalty
- Oumaima — little mother
- Ogulgerek — a son is needed
- Oumar — flourishing
- Oumou — mother
- Ousmane — the caliph
- Onur — honour
- Öykü — story
- Oğuz — the legendary ancestor of the Turks
- Orhan — the great khan, the sultan
- Orkun — the Orkhon river, noble
- Ozan — poet, bard
Christian names starting with O 24
- Olivia — olive tree
- Oliver — olive tree
- Oscar — deer lover, god spear
- Owen — young warrior, noble
- Ocean — the sea
- Ochola — born after the father's death
- Octavian — eighth
- Odong — born in the bush
- Okello — born after twins
- Olive — the olive tree, peace
- Onyx — the black gemstone
- Opio — first-born of twins
- Oak — the oak tree, strength
- Oleg — holy, blessed
- Olivier — olive tree
- Olle — ancestor's descendant
- Orla — golden princess
- Ovidiu — sheep, the poet
- Oksana — hospitality
- Olga — holy
- Opal — the iridescent gem
- Ornella — flowering ash tree
- Oana — god is gracious
- Oisin — little deer
Jewish names starting with O 11
Buddhist and East Asian names starting with O 3
Modern picks 38
- Oscar — deer lover, god spear
- Ocean — the sea
- Octavian — eighth
- Olive — the olive tree, peace
- Onyx — the black gemstone
- Oak — the oak tree, strength
- Ori — my light
- Oviya — painting, artist
- Oz — strength
- Ottilie — prosperous in battle
- Ojaswin — lustrous, vigorous
- Orson — bear cub
- Oakley — oak meadow
- Oda — wealth
- Odin — fury, the chief god
- Ollie — olive tree
- Octavia — eighth
- Otis — wealthy
- Oakes — oak trees
- Oja — vitality
- Oorja — energy
- Otto — wealth, fortune
- Ohemaa — queen
- Ole — ancestor's descendant
- Omisha — goddess of birth and death
- Onni — happiness, luck
- Ovi — holy message
- Ognjen — fire
- Omphile — god gave me
- Omansh — part of the sacred om
- Orysia — peace
- Odette — wealthy
- Ophelia — help
- Orion — the hunter constellation
- Oaklee — oak meadow
- Orpheus — the darkness of night, the musician
- Öykü — story
- Ona — wave
Rare gems 30
- Obiora — heart of the people
- Odette — wealthy
- Ofentse — god has done
- Ogechi — god's time
- Okechukwu — god's share
- Oluchi — god's work
- Oluwaseyi — god made this
- Olwethu — ours
- Ophelia — help
- Oratile — it is loved
- Orion — the hunter constellation
- Orlando — famous land
- Osborn — god bear
- Oumar — flourishing
- Oumou — mother
- Ousmane — the caliph
- Owethu — ours
- Oaklee — oak meadow
- Odran — little pale green one
- Olympia — from Mount Olympus
- Onawa — wide awake
- Onur — honour
- Oriel — golden
- Orpheus — the darkness of night, the musician
- Otavio — eighth
- Ourania — heavenly
- Öykü — story
- Odina — mountain
- Oladipo — wealth increases
- Olamide — my wealth has arrived
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Meanings and origins are compiled from common references and are approximate. Many names carry several meanings across traditions — please confirm with family or a native speaker before deciding. Updated 2026-09-20.