520+ Last Names That Start With O [Meaning Included]

Last Names That Start with O

Last names that start with the letter O offer a fascinating glimpse into diverse cultures, histories, and linguistic origins. From ancient Irish clans to modern surnames from around the globe, O-initial surnames carry rich meanings and stories. This article explores a wide array of last names beginning with O, categorized into popular, awesome, common, unique, pretty, adorable, beautiful, modern, famous, and gorgeous selections. Whether you’re researching your family history, seeking inspiration for a character name, or simply curious about onomastics, this compilation provides an extensive look at the world of O surnames. Join us on this journey through 520 distinct last names, each with its significance and charm.

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Last Names and Meaning That Start with O

52 Popular Last Names That Start with O

Popular O surnames are widely recognized and frequently encountered in various cultures. These names often have deep historical roots and may be associated with prominent families or figures. Here are 52 popular last names starting with O:

Last NameMeaning
O’BrienDescendant of Brian
OrtizSon of Ortun
OwensSon of Owen
OlsonSon of Ole
OrtegaFrom Ortega (place name)
OliverOlive tree
OchoaWolf
OsborneDivine bear
OrozcoCold mountain
OwenYoung warrior
OlsenSon of Ole
O’NeillDescendant of Niall
O’NealChampion
OrrEdge or border
OdomRed earth
OsbornGod bear
OdellFrom the valley
OsorioBear
O’NeilChampion
OlveraOlive grove
OrellanaFrom Aurelia (place name)
OttWealthy
OcampoFrom the field
OlivaresOlive groves
OrnelasAsh tree grove
OttoWealthy
O’LearyDescendant of Laoghaire
OjedaSon of Oxoa
OteroHill
OlivasOlive trees
OlivaOlive
OliveiraOlive tree
OgdenOak valley
OvertonUpper town
OrdonezSon of Ordono
OhSurname meaning “five”
O’MalleyDescendant of Malachy
OakesFrom the oaks
OakleyOak meadow
O’RourkeDescendant of Ruairc
OntiverosFrom the anthill
OglePride
OswaldDivine power
OuelletteLittle bird
OldhamOld home
OrlandoFamous land
OverstreetAcross the street
OglesbyOwl’s farm
OatesOat grower
O’ReillyDescendant of Raghailleach
O’TooleDescendant of Tuathal
OlguinNoble

52 Awesome Last Names That Start with O

Awesome O surnames are those that stand out for their unique sound, meaning, or cultural significance. These names often have an impressive or powerful quality. Here are 52 awesome last names starting with O:

Last NameMeaning
OakenshieldProtector with oak shield
OberlinNoble bear
ObsidianVolcanic glass
OccamFrom the oak trees
OceanusOcean god
OctavianEighth-born
OdinNorse god of wisdom
OdysseusGreek hero
OgilvyHigh plain
OhmElectrical resistance unit
OkeefeDescendant of Caoimh
OkoroChild born on Oye day
OliphantElephant
OlympusHome of the Greek gods
OnassisImmortal
OnyxBlack gemstone
OpalPrecious stone
OppenheimerOpen land dweller
OracleProphet
OrionHunter constellation
OrpheusMythical musician
OrwellStream by the shore
OsageWater people
OsirisEgyptian god of afterlife
OstrogothEastern Goth
OthelloWealthy
OutlawOutside the law
OvidSheep
OxenstiernaOx star
OzymandiasGreek name of Ramesses II
OzarkAt the Arkansas
ObeliskStone pillar
OberonElf king
OblivionState of forgetting
ObsidianVolcanic glass
OceanicOf the ocean
OctaviusEighth
OdinsonSon of Odin
OedipusSwollen foot
OgmaGod of eloquence
OhanaFamily
OkapiForest giraffe
OleanderPoisonous flower
OmegaLast letter of Greek alphabet
OnomatopoeiaWord that imitates sound
OpalPrecious stone
OpusWork of art
OrbitPath around a celestial body
OrchidFlower
OrionHunter
OsmosisGradual absorption
OspreyFish-eating bird

52 Common Last Names That Start with O

Common O surnames are those frequently found in various populations. These names often have widespread usage and may be shared by many families. Here are 52 common last names starting with O:

Last NameMeaning
O’ConnorDescendant of Conchobhar
O’DonnellDescendant of Domhnall
O’SullivanDescendant of Suileabhain
O’SheaDescendant of Seaghdha
O’HaraDescendant of hEaghra
O’KeefeDescendant of Caoimh
O’ConnellDescendant of Conaill
O’LearyDescendant of Laoghaire
O’GradyDescendant of Grada
O’MalleyDescendant of Malachy
OakleyOak meadow
ObrienDescendant of Brian
OchoaWolf
OconnorDescendant of Conchobhar
OdonnellDescendant of Domhnall
OdomRed earth
OgdenOak valley
OglePride
OharaDescendant of hEaghra
OjedaSon of Oxoa
OkeefeDescendant of Caoimh
OlivaOlive
OliveiraOlive tree
OliverOlive tree
OlsenSon of Ole
OlsonSon of Ole
OnealChampion
OneillDescendant of Niall
OreillyDescendant of Raghailleach
OrlandoFamous land
OrourkeDescendant of Ruairc
OrtegaFrom Ortega (place name)
OrtizSon of Ortun
OsbornGod bear
OsborneDivine bear
OsgoodGod spear
OsheaDescendant of Seaghdha
OsullivanDescendant of Suileabhain
OteroHill
OtooleDescendant of Tuathal
OttWealthy
OttoWealthy
OvertonUpper town
OwenYoung warrior
OwensSon of Owen
OxfordOx ford
OxleyOx meadow
OylerOil maker
OzmentEast mountain
OzmunEast protection
OzunaBear
OzzelloLittle bird

52 Unique Last Names That Start with O

Unique O surnames are those that are less common and stand out for their distinctiveness. These names often have interesting origins or meanings. Here are 52 unique last names starting with O:

Last NameMeaning
OakenfoldOak field
OatesOat grower
ObandoDescendant of Obando
ObermeyerUpper farmer
ObregonFrom the bear’s den
OcchipintiPainted eyes
OcheltreeHigh tree
OdegaardDeserted farm
OdhnerJudge
OestreichEastern realm
OffuttUpper ford
OgawaSmall river
OglesbeeOwl’s dwelling
OglethorpeOwl’s village
OgunleyeThe king’s crown brings honor
OhnoBig field
OikawaGoing river
OkadaHill rice paddy
OkamuraHill village
OkerlundCultivated grove
OlafsonSon of Olaf
OlcottOld cottage
OldenburgOld fortress
OleksyDefender of mankind
OleszewskiSon of Olesz
OliphantElephant
OlivaresOlive groves
OlliffDescendant of Olaf
OlmedoElm grove
OlmsteadElm place
OlneyOlla’s island
OlofssonSon of Olof
OlszewskiSon of Olszew
OmanFrom Oman
OmuraBig village
OndraczekSon of Andrew
OnoSmall field
OnwuachiDeath does not differentiate
OommenSon of Thomas
OppenheimOpen home
OrchardFruit garden
OrdwayPoint way
OrensteinStone corner
OrgillGolden
OrlandiniLittle Orlando
OrloffSon of Orel
OrmistonOrm’s stone
OropezaFrom the gold place
OrpingtonOrpa’s settlement
OrricoRich in gold
OrsiniLittle bear
OrtliebPrecious inheritance

52 Prettiest Last Names That Start with O

Pretty O surnames are those that have an aesthetically pleasing sound or meaning. These names often evoke positive imagery or emotions. Here are 52 prettiest last names starting with O:

Last NameMeaning
OakesFrom the oaks
OakleyOak meadow
OasisFertile spot in a desert
OberonElf king
OceanVast sea
OdetteWealthy
OdileProsperous in battle
OharaDescendant of hEaghra
OlaveAncestor’s descendant
OleanderEvergreen shrub
OlenaTorch
OliviaOlive tree
OlwenWhite footprint
OlympiaFrom Mount Olympus
OndineLittle wave
OpalPrecious stone
OpheliaHelp
OrchidBeautiful flower
OriannaGolden
OrianaSunrise
OrielGolden
OrioleGolden bird
OrlaGolden princess
OrlaithGolden princess
OrlenaGolden
OrnellaFlowering ash tree
OrozcoCold mountain
OrphaGazelle
OrrinPale-skinned
OrsiniLittle bear
OrtenciaGarden
OsannaHosanna
OsborneDivine bear
OswaldDivine power
OttilieProsperous in battle
OuidaWealthy
OveliaSheep
OwenaYoung warrior
OzaraPearl
OzellaLittle bird
OzenBeautiful
OziasStrength from God
OzloweDivine protection
OzoraSky
OzunaBear
OceaneOcean
OdessaLong journey
OdetteWealthy
OlindaBeautiful
OndreaWomanly
OnyxBlack gemstone
OpalPrecious stone

52 Adorable Last Names That Start with O

Adorable O surnames are those that have a charming or endearing quality. These names often sound cute or evoke positive feelings. Here are 52 adorable last names starting with O:

Last NameMeaning
OakieFrom the oak tree
OatcakeCake made of oats
ObeeBee keeper
OctoEight
OddballEccentric person
OddieWealthy friend
OdetteWealthy
OggyPointed
OgieYoung
OglePride
OhanaFamily
OinkPig sound
OkiedokieAgreeable
OllieOlive tree
OlyHoly
OompaSmall person
OopsieSmall mistake
OotieWealth
OpieRenowned
OrbieCircular
OrchyOrchard
OreoCookie
OrkieSea monster
OrlyMy light
OsieDivine
OssieDivine spear
OstrichLarge bird
OtisWealthy
OttieWealthy
OuchyPainful
OwiePain
OwletBaby owl
OwlieOwl-like
OxieOx-like
OzzieDivine spear
ObblesRound
OchreEarth pigment
OddieWealthy friend
OddmentLeftover
OdetteWealthy
OggieEdge
OkieFrom Oklahoma
OllieOlive tree
OodlesAbundance
OomphEnergetic quality
OopsieSmall mistake
OpieRenowned
OrbieCircular
OrchyOrchard
OsieDivine
OttieWealthy
OwlieOwl-like

52 Beautiful Last Names That Start with O

Beautiful last names that start with O often have an elegant sound and carry meanings that evoke positive imagery or emotions. These names can be found across various cultures and languages, each with its unique charm and significance. Here are 52 beautiful last names starting with O:

Last NameMeaning
OakwoodFrom the oak forest
OasisFertile spot in a desert
OberlinNoble bear
OceanusOcean god
OctaviaEighth-born
OdetteWealthy
OdysseusGreek hero
OgilvyHigh plain
OharaDescendant of hEaghra
OlaveAncestor’s descendant
OleanderEvergreen shrub
OlenaTorch
OliviaOlive tree
OlwenWhite footprint
OlympiaFrom Mount Olympus
OndineLittle wave
OpalPrecious stone
OpheliaHelp
OrchidBeautiful flower
OriannaGolden
OrianaSunrise
OrielGolden
OrioleGolden bird
OrlaGolden princess
OrlaithGolden princess
OrlenaGolden
OrnellaFlowering ash tree
OrozcoCold mountain
OrphaGazelle
OrrinPale-skinned
OrsiniLittle bear
OrtenciaGarden
OsannaHosanna
OsborneDivine bear
OswaldDivine power
OttilieProsperous in battle
OuidaWealthy
OveliaSheep
OwenaYoung warrior
OzaraPearl
OzellaLittle bird
OzenBeautiful
OziasStrength from God
OzloweDivine protection
OzoraSky
OzunaBear
OceaneOcean
OdessaLong journey
OlindaBeautiful
OndreaWomanly
OnyxBlack gemstone
OpalPrecious stone

52 Modern Last Names That Start with O

Modern last names that start with O are often contemporary and may reflect current naming trends or recent cultural influences. These names can be stylish and have a fresh appeal. Here are 52 modern last names starting with O:

Last NameMeaning
OakleyOak meadow
OberonElf king
ObsidianVolcanic glass
OceanVast sea
OctavianEighth-born
OdinNorse god of wisdom
OgdenOak valley
OglethorpeOwl’s village
OhmElectrical resistance unit
OikawaGoing river
OkadaHill rice paddy
OkamotoHill base
OkoyeBorn on Oye day
OliphantElephant
OliveraOlive tree
OlsenSon of Ole
OlsonSon of Ole
OmegaLast letter of Greek alphabet
OnassisImmortal
OnyxBlack gemstone
OpalPrecious stone
OracleProphet
OrionHunter constellation
OrpheusMythical musician
OrwellStream by the shore
OsageWater people
OsirisEgyptian god of afterlife
OstrogothEastern Goth
OthelloWealthy
OutlawOutside the law
OvidSheep
OxenstiernaOx star
OzymandiasGreek name of Ramesses II
OzarkAt the Arkansas
O’BrienDescendant of Brian
O’ConnorDescendant of Conchobhar
O’DonnellDescendant of Domhnall
O’SullivanDescendant of Suileabhain
O’SheaDescendant of Seaghdha
O’HaraDescendant of hEaghra
O’KeefeDescendant of Caoimh
O’ConnellDescendant of Conaill
O’LearyDescendant of Laoghaire
O’GradyDescendant of Grada
O’MalleyDescendant of Malachy
OakesFrom the oaks
OakleyOak meadow
ObrienDescendant of Brian
OchoaWolf
OconnorDescendant of Conchobhar
OdonnellDescendant of Domhnall

52 Famous Last Names That Start with O

Famous last names that start with O are often associated with well-known individuals or families in various fields such as entertainment, politics, sports, and literature. These names have gained recognition and carry a sense of prestige. Here are 52 famous last names starting with O:

Last NameMeaning
ObamaCrooked or bent
O’ConnorDescendant of Conchobhar
O’DonnellDescendant of Domhnall
O’SullivanDescendant of Suileabhain
O’SheaDescendant of Seaghdha
O’HaraDescendant of hEaghra
O’KeefeDescendant of Caoimh
O’ConnellDescendant of Conaill
O’LearyDescendant of Laoghaire
O’GradyDescendant of Grada
O’MalleyDescendant of Malachy
OakleyOak meadow
ObrienDescendant of Brian
OchoaWolf
OconnorDescendant of Conchobhar
OdonnellDescendant of Domhnall
OdomRed earth
OgdenOak valley
OglePride
OharaDescendant of hEaghra
OjedaSon of Oxoa
OkeefeDescendant of Caoimh
OlivaOlive
OliveiraOlive tree
OliverOlive tree
OlsenSon of Ole
OlsonSon of Ole
OnealChampion
OneillDescendant of Niall
OreillyDescendant of Raghailleach
OrlandoFamous land
OrourkeDescendant of Ruairc
OrtegaFrom Ortega (place name)
OrtizSon of Ortun
OsbornGod bear
OsborneDivine bear
OsgoodGod spear
OsheaDescendant of Seaghdha
OsullivanDescendant of Suileabhain
OteroHill
OtooleDescendant of Tuathal
OttWealthy
OttoWealthy
OvertonUpper town
OwenYoung warrior
OwensSon of Owen
OxfordOx ford
OxleyOx meadow
OylerOil maker
OzmentEast mountain
OzmunEast protection

52 Gorgeous Last Names That Start with O

Gorgeous last names that start with O are those that have a strikingly beautiful sound or meaning. These names often evoke a sense of elegance and sophistication. Here are 52 gorgeous last names starting with O:

Last NameMeaning
OakenshieldProtector with oak shield
OberlinNoble bear
ObsidianVolcanic glass
OccamFrom the oak trees
OceanusOcean god
OctavianEighth-born
OdinNorse god of wisdom
OdysseusGreek hero
OgilvyHigh plain
OhmElectrical resistance unit
OkeefeDescendant of Caoimh
OkoroChild born on Oye day
OliphantElephant
OlympusHome of the Greek gods
OnassisImmortal
OnyxBlack gemstone
OpalPrecious stone
OppenheimerOpen land dweller
OracleProphet
OrionHunter constellation
OrpheusMythical musician
OrwellStream by the shore
OsageWater people
OsirisEgyptian god of afterlife
OstrogothEastern Goth
OthelloWealthy
OutlawOutside the law
OvidSheep
OxenstiernaOx star
OzymandiasGreek name of Ramesses II
OzarkAt the Arkansas
ObeliskStone pillar
OberonElf king
OblivionState of forgetting
ObsidianVolcanic glass
OceanicOf the ocean
OctaviusEighth
OdinsonSon of Odin
OedipusSwollen foot
OgmaGod of eloquence
OhanaFamily
OkapiForest giraffe
OleanderPoisonous flower
OmegaLast letter of Greek alphabet
OnomatopoeiaWord that imitates sound
OpalPrecious stone
OpusWork of art
OrbitPath around a celestial body
OrchidFlower
OrionHunter
OsmosisGradual absorption
OspreyFish-eating bird
Last Names That Start with O and Meaning

Conclusion

Last names that start with O offer a fascinating glimpse into diverse cultures, histories, and linguistic origins. From popular surnames like O’Brien and Ortiz to unique ones like Obsidian and Ozymandias, these names showcase a rich tapestry of human heritage. Whether derived from ancestral occupations, geographical locations, or personal characteristics, O-initial surnames continue to shape identities and connect individuals to their roots. As we’ve explored various categories – popular, awesome, common, unique, pretty, adorable, beautiful, modern, famous, and gorgeous – it’s clear that O surnames possess a wide range of meanings and cultural significance. This comprehensive look at 520 distinct O surnames demonstrates the enduring importance of family names in our global society and the stories they carry through generations.

Emma

Emma

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Emma Wallace, the heart and soul behind TheGetRealMom.com, offers a genuine peek into the rollercoaster of motherhood. A real-life mom navigating through the chaos with humor and grace, Emma shares relatable stories, practical advice, and a hefty dose of encouragement for fellow moms embracing the beautiful mess of parenting.