Names starting with O.
- Oaklynn American modern invented · Oak tree pool
- Oba Yoruba oba · King or ruler
- Obasi Igbo · Aba-related
- Obdulia Latin Obdullius · Stubborn or hardened
- Obe Germanic (Dutch) · Wealthy guardian
- Obi Igbo obi · Chief
- Obiageli Igbo · Obi's daughter
- Obiajulu Igbo obi-ajulu · Chief's judgment or leadership virtue
- Obinna Igbo · Father's heart
- Obio Igbo obi-o · Chief's daughter or reflecting paternal status
- Obiora Igbo obi-ora · Chief lives long
- Obure Luhya obure · Born by the river
- Océane French-Greek · Unknown
- Oche Igbo oche · At home
- Ochieng Luo ochieng · Born at night
- Octave French · Eighth born
- Octavian Latin · Eighth
- Octavius Latin Octavius · eighth
- Octawian Latin Octavianus · Eighth
- Oda Germanic Oda · Wealthy or prosperous
- Odair Brazilian Portuguese · Unknown
- Odartey Ga odartey · stone
- Odd Old Norse Oddr · Point of a weapon
- Oddlaug Old Norse Oddlaug · Sacred point
- Oddny Old Norse Oddný · Point
- Oddvar Old Norse Oddvarr · Point and defender
- Odete Germanic-Portuguese · Wealth or fortune
- Odetta Yoruba · Wealthy
- Odette Germanic Oda · Wealthy or prosperous one
- Odhiambo Luo odhiambo · Born in the morning
- Odile Germanic Oda · Wealthy or prosperous
- Odilia Germanic Oda · Wealthy or prosperous
- Odilon Germanic/Latin · Unknown
- Odin Old Norse Oðinn · Fury, inspiration
- Odinaka Igbo Odin-aka · Odin-like
- Odo Old High German Odo · Wealthy or prosperous
- Odochi Igbo Odo-chi · Odo's daughter or relating to wealth and prosperity
- Ododo Igbo Odo-do · Prosperity times two
- Odón Greek odós · Origin and meaning uncertain
- Odonkor Ga/Adangbe · Stone warrior
- Odunayo Igbo odu-nayo · The pain/sorrow is gone
- Ofelia Greek Ophelia · Help or succor
- Offiong Annang offiong · left side
- Ofodile Igbo ofo-dile · One who walks with his father
- Ofon Igbo ofon · Home
- Ofori Akan ofori · Blacksmith
- Oganda Luhya oganda · Of the homeland
- Ogechi Igbo oge-chi · Daughter of Oge
- Ogechukwu Igbo Oge-Chukwu · God's daughter or daughter of the almighty
- Ogheneruona Edo Oghene-ruona · God's blessing or divine favor
- Ogochukwu Igbo Ogo-Chukwu · Daughter of God
- Ogutu Maasai ogutu · Warrior or brave one
- Oğuz Turkic/Turkish · Oguz
- Oier Basque/unclear · Unclear
- Oihana Basque oihana · Forest
- Oisin Irish · Little deer
- Oiva Finnish/Norse · Unknown
- Ojas Sanskrit · Vital energy
- Ojasvi Sanskrit · Bright energy
- Ojedapo Yoruba oje-dapo · One who gives prosperity
- Ojima Igbo ojima · Family keeper
- Okafor Igbo · Born on market day
- Oke Old High German Oke · Sharp or keen
- Okechukwu Igbo Oke-Chukwu · Oke is great
- Okello Luo okello · Born at a time of plenty
- Oketch Luo oketch · Birth or natural circumstances
- Okhaivoh Esan okhaivoh · God is great
- Okoth Luo okoth · Born at a time of cold
- Oksana Russian Oksana · Hospitable or welcoming
- Oktaw Latin Octavus · eighth
- Oktawia Latin Octavia · Eighth
- Oktawian Latin Octavianus · Of the eighth
- Okubona Igbo oku-bona · One who is well-known
- Okunle Yoruba Okunle · I was born with wealth
- Okunola Yoruba Okunola · Born with wealth or wealth accompanies birth
- Okyere Akan okyere · Worthy or deserving one
- Ola Arabic · To be tall, ascending
- Olabisi Yoruba ola-bisi · Wealth has multiplied
- Oladapo Yoruba ola-dapo · Chief arrives or chief has come
- Oladele Yoruba ola-dele · Chief enters home or chief returns home
- Oladimeji Yoruba ola-dimeji · Chief twice
- Olaf Old Norse · Ancestral heir
- Olagoke Yoruba ola-goke · Chief is crowned or chief wears the crown
- Olaia Greek olaia · Oil maker; olive-related
- Olajide Yoruba ola-jide · Chief awakens or chief wakes up
- Olajumoke Yoruba ola-jumoke · Chief has become wealthy
- Olamide Yoruba ola-mide · My chieftaincy/wealth is my glory
- Olaniran Yoruba ola-niran · Chief wakes up again or chief rises again
- Olaniyi Yoruba ola-niyi · Chief has honor or chief is dignified
- Olanna Igbo/Yoruba ola-na · Something is precious
- Olanrewaju Yoruba (NG) · Wealth arrives in the future
- Olasubomi Yoruba (NG) · My wealth deserves reverence
- Olasunkanmi Yoruba (NG) · Wealth possesses me
- Olasupo Yoruba (NG) · Increasing wealth
- Olatoye Yoruba (NG) · Earned wealth or deserved honor
- Olatunde Yoruba (NG) · Wealth returns
- Olaug Old Norse (NO) · Ancestor's awe
- Olav Old Norse (SE/NO) · Ancestor's heir
- Olawale Yoruba (NG) · Wealth comes home
- Olayinka Yoruba (NG) · Wealth is praised
- Olayiwola Yoruba (NG) · Surrounded by wealth
- Oldert Germanic (NL) · Old and bright
- Ole Old Norse diminutive · Ancestor or heir
- Oleg Old Norse/Slavic (PL/RU) · Holy or blessed
- Olegário Latin/Portuguese (PT) · Portuguese:
- Olek Slavic · Defender helper
- Oleksandr Slavic · Defender of men
- Olena Slavic · Shining light torch
- Olfert Germanic (DK) · Old traveler
- Olga Old Norse · Holy
- Oli Latin-English · Olive tree planter
- Olimpia Greek (PL/IT) · Of Olympus, divine
- Olindo Italian · Holy fragrant
- Olive Latin-English · Olive
- Oliver Old Norse/Latin · Olive tree
- Olivia Latin/literary · Olive tree or living one
- Olivier Latin · Olive tree, peace
- Oliwer Latin/Polish (PL) · Olive grower
- Oliwia Polish · Olive tree; peace
- Olla Germanic/Slavic (NL) · Holy
- Olle Old Norse (SE) · Ancestor
- Olli Old Norse/Finnish (FI) · Ancestor
- Ollie Latin-English · Olive tree
- Ollo Unknown · Ancestral heritage
- Olof Old Norse-Swedish · Ancestor
- Olonkpa Igbo (NG) · Cultural significance
- Oloruntoba Yoruba (NG) · God is sufficient
- Oluf Old Norse (DK) · Ancestor's wolf
- Olufemi Yoruba (NG) · The chief loves me
- Olufunmilayo Yoruba (NG) · Yoruba: "Olu"
- Olugbenga Yoruba (NG) · The chief brings honor
- Olumayowa Yoruba (NG) · Yoruba: "Olu"
- Olumide Yoruba · God is here
- Oluremi Yoruba (NG) · The chief pleases me
- Oluseun Yoruba (NG) · To honor the chief
- Olusola Yoruba (NG) · The chief acquires
- Oluwabunmi Yoruba (NG) · Yoruba: "Oluwa"
- Oluwadamilare Yoruba (NG) · Yoruba: "Oluwa"
- Oluwadamilola Yoruba (NG) · Yoruba: "Oluwa"
- Oluwadayo Yoruba (NG) · God brings joy
- Oluwafemi Yoruba (NG) · Yoruba: "Oluwa"
- Oluwaferanmi Yoruba (NG) · God loves me, emphasizing care
- Oluwafunke Yoruba (NG) · Yoruba: "Oluwa"
- Oluwakayode Yoruba (NG) · Yoruba: "Oluwa"
- Oluwakemi Yoruba (NG) · Yoruba: "Oluwa"
- Oluwaleke Yoruba (NG) · Yoruba: "Oluwa"
- Oluwasenubi Yoruba (NG) · Yoruba: "Oluwa"
- Oluwaseun Yoruba (NG) · To praise God
- Oluwaseyi Yoruba (NG) · Yoruba: "Oluwa"
- Oluwatobi Yoruba (NG) · Yoruba: "Oluwa"
- Oluwatobiloba Yoruba (NG) · Yoruba: "Oluwa"
- Oluwatokunbo Yoruba (NG) · Yoruba: "Oluwa"
- Oluwatomisin Yoruba (NG) · Yoruba: "Oluwa"
- Oluwatoyin Yoruba (NG) · God brings joy
- Oluwole Yoruba (NG) · Yoruba: "Oluwa"
- Olwethu Zulu (ZA) · Ours/belonging to us collectively
- Omar Arabic · Flourishing, thriving
- Omara Swahili (KE) · Long life
- Omari Arabic/Swahili (KE) · Life or long-lived
- Ombati Maasai (KE) · Maasai cultural name
- Ombeline French · Little shadow
- Omer Hebrew · Sheaf of grain
- Omolade Yoruba (NG) · Child of royalty
- Omolara Yoruba (NG) · Yoruba: "Omo"
- Omolayo Yoruba (NG) · Child brings joy
- Omolo Luo (KE) · Young man or boy in Luo culture
- Omondi Luo (KE) · Luo: Omondi is a patronymic Luo name
- Omotola Yoruba · Child is as precious as wealth
- Omotunde Yoruba (NG) · Child returns again
- Omri Hebrew · Life, sheaf
- Onalenna Setswana (ZA) · Setswana: "ona"
- Ondřej Greek-Czech · Manly or brave
- Oneca Basque (ES) · Basque: origin unclear
- Ongile Setswana/Zulu (ZA) · One who is good/beautiful
- Ongoro Luo/Maasai (KE) · Cultural name
- Onintza Basque (ES) · Basque: "on"
- Onkabetse Setswana (ZA) · Setswana: "onka"
- Onke Zulu/Setswana (ZA) · Gift
- Onni Finnish (FI) · Luck, happiness
- Onno Germanic/Low German (DE/NL) · Small wealth
- Onosetale Sotho (NG/ZA) · In Sotho cultural context
- Onsarigo Luo (KE) · Luo cultural name
- Onur Turkish/Arabic (TR) · Honor or glory
- Onyambu Luo (KE) · Within Luo cultural traditions
- Onyango Luo (KE) · First-born or big eye
- Onyeka Igbo (NG) · Connected to family or personal significance
- Onyinyechi Igbo (NG) · Who is like me
- Onyonka Luo (KE) · Within Luo genealogical traditions
- Onyura Luo (KE) · Luo cultural name
- Oona Irish/Old Norse (FI) · Unity, lamb
- Opal Sanskrit-English · Precious stone
- Opeyemi Yoruba (NG) · Covered/protected for me
- Ophélie French · Help assistance
- Opiyo Luo (KE) · Relates to Luo cultural or ancestral traditions
- Opoku Akan (GH) · Akan cultural name
- Oppong Akan (GH) · Akan/Ghanaian: Akan origin
- Oratile Setswana (ZA) · Setswana: "o"
- Orazio Latin/Italian (IT) · Italian:
- Ordoño Spanish (ES) · Noble rank
- Ore Yoruba (NG) · Yoruba: "Ore" means friend in Yoruba.
- Orengo Bantu/Luo (KE) · Unknown
- Oreoluwa Yoruba (NG) · God is my friend
- Oreste Greek/Italian (IT) · Italian:
- Orhan Turkish/Arabic (TR) · Wise leader
- Ori Hebrew · My light
- Oriane French · Golden sunrise
- Oriang Luo (KE) · Unknown
- Orinda Maasai/Bantu (KE) · Maasai/Kenyan: possibly
- Oriol Catalan/Spanish (ES) · Golden, oriole bird
- Orla Irish-Gaelic · Golden princess or golden sovereignty
- Orlaith Irish · Golden princess
- Orlanda Germanic/Italian (IT) · Famous throughout the land
- Orlando Old Germanic · Famous throughout the land
- Orli Hebrew · My light
- Orm Old Norse (DK) · Serpent or dragon
- Ornella Italian · Flowering ash tree
- Oroitz Basque (ES) · Golden speech
- Oronzo Italian (IT) · Golden, gold
- Orsola Italian · Little bear
- Ortensia Latin/Italian (IT) · Of the garden
- Ortlinde Germanic (DE) · Edge of linden tree
- Orugbulem Igbo (Nigeria) · One who brings wealth
- Orvar Old Norse · Edge warrior or spear edge
- Osagie Edo (Nigeria) · Gods wish or Gods favor
- Osama Arabic · Like a lion
- Osarumen Edo (Nigeria) · God has given
- Osbert Old Germanic · Divine brightness
- Oscar Old Norse · Divine spear
- Osei Akan (Ghana) · Noble or well-born
- Osiro Luo (Kenya) · Tied to Luo cultural traditions
- Osita Igbo (Nigeria) · Strong or mighty one
- Oskar Old Norse · Divine spear
- Osman Arabic · Bustard bird
- Osmar Germanic-Brazilian Portuguese · Unknown
- Osmo Finnish/Germanic · Unknown
- Osmund Old Norse · Old Norse "os"
- Osmundo Osmund variant · Old Norse "os"
- Ostap Slavic · Steadfast one
- Osuagwu Igbo (Nigeria) · One who conquers or warrior
- Osvald Old Norse · Old Norse "os"
- Osvaldina Osvald variant · Old Norse "os"
- Osvaldo Germanic-Spanish-Italian · Old English "os"
- Oswald Old English/Germanic · Old English "os"
- Oswin Old English · Old English "os"
- Otakar Slavic · Prosperous warrior
- Otavio Latin-Portuguese · Eighth
- Otfried Old Germanic · Old Germanic "ot"
- Othman Arabic · Bustard bird
- Othmane Othman variant · Bustard bird
- Otiende Luo (Kenya) · Connected to Luo traditions
- Otieno Luo (Kenya) · Born during rain
- Otilia Latin · Fortune
- Otis English-Greek · Unknown
- Otoo Akan/Ga (Ghana) · Tied to Akan or Ga cultural traditions
- Otso Finnish · Unknown
- Ottar Old Norse · Fragrant essence or precious oil
- Ottavia Latin · Eight
- Ottavio Latin-Italian · Eighth
- Ottilia Latin/Germanic · Latin Otilis related to fortune and wealth
- Ottilie Germanic · Wealth and fortune
- Otto Old Germanic · Wealthy
- Otu Akan/Ga (Ghana) · Akan/Ga cultural name
- Otukpo Igbo (Nigeria) · Nigerian Igbo name
- Otylia Polish variant · Polish feminine form
- Ouafae Arabic · Faithfully loyal
- Oualid Arabic · Newborn child
- Ouassim Arabic · Generous or noble
- Ouiam Arabic · Harmonious pact
- Ouko Luo (Kenya) · Tied to Luo cultural traditions
- Ouma Luo/Bantu (Kenya) · Born after twins
- Oumaima Arabic · Mother
- Ourania Greek · Heavenly
- Ouroana Portuguese · Origin and meaning uncertain
- Outi Finnish · Unknown
- Ove Old Norse · Ancestor or grandfather
- Ovie Edo/Ijaw (Nigeria) · Culturally tied to coastal traditions
- Owain Welsh · Young warrior
- Owamenakpo Edo (Nigeria) · Tied to gratitude
- Owen Welsh · Young warrior
- Owidiusz Latin/Polish · Sheep farmer
- Owino Luo (Kenya) · Tied to Luo cultural heritage
- Owuor Luo (Kenya) · Tied to Luo family traditions
- Owuraku Akan (Ghana) · Tied to Akan cultural traditions
- Owusu Akan (Ghana) · Ghanaian Akan surname/given name
- Oyindamola Yoruba (Nigeria) · Honey brings joy
- Oyinkan Yoruba (Nigeria) · Surrounded by wealth
- Oyugi Luo (Kenya) · Tied to Luo traditions
- Ozanildo Portuguese/Brazilian · Unknown
- Ozioma Igbo (Nigeria) · Good fortune or good luck