Baby Boy Names That Start With O

76 carefully curated baby boy names beginning with the letter O — with meanings, origins, and style categories.

🌟 Popular (20)📜 Biblical (8)🛡️ Strong (10)✨ Modern (9)🌍 Rare (9)💎 Unique (20)

All Baby Boy Names Starting With O

Every name includes its meaning, cultural origin, and style category.

Oliver

🌟 Popular

Meaning: Olive tree

Origin: Latin

Owen

🌟 Popular

Meaning: Young warrior

Origin: Welsh

Oscar

🌟 Popular

Meaning: God spear warrior

Origin: Irish

Otis

🌟 Popular

Meaning: Wealth fortunate

Origin: Germanic

Omar

🌟 Popular

Meaning: Prosperous long life

Origin: Arabic

Orion

🌟 Popular

Meaning: Rising hunter

Origin: Greek

Orlando

🌟 Popular

Meaning: Famous land

Origin: Italian

Otto

🌟 Popular

Meaning: Wealth fortune

Origin: Germanic

Oakley

🌟 Popular

Meaning: Oak meadow

Origin: English

Obinna

🌟 Popular

Meaning: Heart of the father

Origin: Igbo

Octavio

🌟 Popular

Meaning: Eighth

Origin: Spanish

Octavian

🌟 Popular

Meaning: Eighth Roman

Origin: Latin

Oden

🌟 Popular

Meaning: Ruler of all

Origin: Norse

Odin

🌟 Popular

Meaning: Rage inspiration

Origin: Norse

Omari

🌟 Popular

Meaning: Flourishing long life

Origin: Swahili

Oskar

🌟 Popular

Meaning: God spear

Origin: Germanic

Osman

🌟 Popular

Meaning: Young bustard

Origin: Turkish

Oswald

🌟 Popular

Meaning: Divine power

Origin: Germanic

Odysseus

🌟 Popular

Meaning: Wrathful traveler

Origin: Greek

Oleander

🌟 Popular

Meaning: Like the plant

Origin: Greek

Onyx

✨ Modern

Meaning: Black gemstone

Origin: Greek

Oz

✨ Modern

Meaning: Strength

Origin: Hebrew

Ozzy

✨ Modern

Meaning: Divine power

Origin: English

Ocean

✨ Modern

Meaning: Large body of water

Origin: English

Oaklen

✨ Modern

Meaning: Oak glade

Origin: English

Obie

✨ Modern

Meaning: Servant of God

Origin: Hebrew

Ode

✨ Modern

Meaning: Poem or song

Origin: English

Odie

✨ Modern

Meaning: Wealthy one

Origin: English

Odil

✨ Modern

Meaning: Prosperous

Origin: Germanic

Oberon

💎 Unique

Meaning: Noble bear-like

Origin: Germanic

Octavius

💎 Unique

Meaning: Eighth Roman

Origin: Latin

Oles

💎 Unique

Meaning: Defender of men

Origin: Ukrainian

Olexa

💎 Unique

Meaning: Defender

Origin: Ukrainian

Olumide

💎 Unique

Meaning: God has arrived

Origin: Yoruba

Olusegun

💎 Unique

Meaning: God is victorious

Origin: Yoruba

Oluwafemi

💎 Unique

Meaning: God loves me

Origin: Yoruba

Onyeka

💎 Unique

Meaning: Who is greatest

Origin: Igbo

Orenthal

💎 Unique

Meaning: Old gold

Origin: Germanic

Orestes

💎 Unique

Meaning: Mountain man

Origin: Greek

Orfeo

💎 Unique

Meaning: Orpheus-like

Origin: Greek

Oriano

💎 Unique

Meaning: Of gold

Origin: Italian

Orin

💎 Unique

Meaning: Pale green tree

Origin: Irish

Oriole

💎 Unique

Meaning: Bird of orange plumage

Origin: Latin

Orison

💎 Unique

Meaning: Prayer

Origin: English

Orlan

💎 Unique

Meaning: Famous land

Origin: Germanic

Orland

💎 Unique

Meaning: Famous land

Origin: Germanic

Orlandus

💎 Unique

Meaning: Famous land Latin

Origin: Latin

Ossian

💎 Unique

Meaning: Little deer

Origin: Irish

Othmar

💎 Unique

Meaning: Prosperous

Origin: Germanic

Oswaldo

🛡️ Strong

Meaning: Divine power

Origin: Spanish

Othello

🛡️ Strong

Meaning: Prosperity in war

Origin: Germanic

Othniel

🛡️ Strong

Meaning: Strength of God

Origin: Hebrew

Ovid

🛡️ Strong

Meaning: Sheep

Origin: Latin

Ozias

🛡️ Strong

Meaning: God strength

Origin: Hebrew

Oziel

🛡️ Strong

Meaning: God is my strength

Origin: Hebrew

Ozni

🛡️ Strong

Meaning: Hearing

Origin: Hebrew

Otniel

🛡️ Strong

Meaning: Strength of God

Origin: Hebrew

Onias

🛡️ Strong

Meaning: Gracious

Origin: Hebrew

Omriel

🛡️ Strong

Meaning: God is my height

Origin: Hebrew

Obadiah

📜 Biblical

Meaning: Servant of God

Origin: Hebrew

Obed

📜 Biblical

Meaning: Servant

Origin: Hebrew

Omri

📜 Biblical

Meaning: Sheaf of grain

Origin: Hebrew

Onan

📜 Biblical

Meaning: Strength

Origin: Hebrew

Oren

📜 Biblical

Meaning: Pine tree

Origin: Hebrew

Ornan

📜 Biblical

Meaning: Noisy

Origin: Hebrew

Ozem

📜 Biblical

Meaning: I shall hasten

Origin: Hebrew

Othni

📜 Biblical

Meaning: Time

Origin: Hebrew

Oakes

🌍 Rare

Meaning: Near the oak trees

Origin: English

Oakwood

🌍 Rare

Meaning: From the oak forest

Origin: English

Obafemi

🌍 Rare

Meaning: King loves me

Origin: Yoruba

Obasi

🌍 Rare

Meaning: In honor of God

Origin: Igbo

Obiora

🌍 Rare

Meaning: Opinion of people

Origin: Igbo

Ochs

🌍 Rare

Meaning: Ox

Origin: German

Octave

🌍 Rare

Meaning: Eighth

Origin: French

Odell

🌍 Rare

Meaning: Woad hill

Origin: English

Odhrán

🌍 Rare

Meaning: Pale green

Origin: Irish

🌟 Popular Baby Boy Names Starting With O

These names are consistently ranked in the U.S. top baby boy name lists and are universally recognized.

Oliver

🌟 Popular

Meaning: Olive tree

Origin: Latin

Owen

🌟 Popular

Meaning: Young warrior

Origin: Welsh

Oscar

🌟 Popular

Meaning: God spear warrior

Origin: Irish

Otis

🌟 Popular

Meaning: Wealth fortunate

Origin: Germanic

Omar

🌟 Popular

Meaning: Prosperous long life

Origin: Arabic

Orion

🌟 Popular

Meaning: Rising hunter

Origin: Greek

Orlando

🌟 Popular

Meaning: Famous land

Origin: Italian

Otto

🌟 Popular

Meaning: Wealth fortune

Origin: Germanic

Oakley

🌟 Popular

Meaning: Oak meadow

Origin: English

Obinna

🌟 Popular

Meaning: Heart of the father

Origin: Igbo

Octavio

🌟 Popular

Meaning: Eighth

Origin: Spanish

Octavian

🌟 Popular

Meaning: Eighth Roman

Origin: Latin

Oden

🌟 Popular

Meaning: Ruler of all

Origin: Norse

Odin

🌟 Popular

Meaning: Rage inspiration

Origin: Norse

Omari

🌟 Popular

Meaning: Flourishing long life

Origin: Swahili

Oskar

🌟 Popular

Meaning: God spear

Origin: Germanic

Osman

🌟 Popular

Meaning: Young bustard

Origin: Turkish

Oswald

🌟 Popular

Meaning: Divine power

Origin: Germanic

Odysseus

🌟 Popular

Meaning: Wrathful traveler

Origin: Greek

Oleander

🌟 Popular

Meaning: Like the plant

Origin: Greek

📜 Biblical Baby Boy Names Starting With O

Classic, historical, and biblical names that never go out of style.

Obadiah

📜 Biblical

Meaning: Servant of God

Origin: Hebrew

Obed

📜 Biblical

Meaning: Servant

Origin: Hebrew

Omri

📜 Biblical

Meaning: Sheaf of grain

Origin: Hebrew

Onan

📜 Biblical

Meaning: Strength

Origin: Hebrew

Oren

📜 Biblical

Meaning: Pine tree

Origin: Hebrew

Ornan

📜 Biblical

Meaning: Noisy

Origin: Hebrew

Ozem

📜 Biblical

Meaning: I shall hasten

Origin: Hebrew

Othni

📜 Biblical

Meaning: Time

Origin: Hebrew

🛡️ Strong Baby Boy Names Starting With O

Names with meanings related to warriors, protectors, strength, or leadership.

Oswaldo

🛡️ Strong

Meaning: Divine power

Origin: Spanish

Othello

🛡️ Strong

Meaning: Prosperity in war

Origin: Germanic

Othniel

🛡️ Strong

Meaning: Strength of God

Origin: Hebrew

Ovid

🛡️ Strong

Meaning: Sheep

Origin: Latin

Ozias

🛡️ Strong

Meaning: God strength

Origin: Hebrew

Oziel

🛡️ Strong

Meaning: God is my strength

Origin: Hebrew

Ozni

🛡️ Strong

Meaning: Hearing

Origin: Hebrew

Otniel

🛡️ Strong

Meaning: Strength of God

Origin: Hebrew

Onias

🛡️ Strong

Meaning: Gracious

Origin: Hebrew

Omriel

🛡️ Strong

Meaning: God is my height

Origin: Hebrew

✨ Modern Baby Boy Names Starting With O

Contemporary names trending right now — fresh and stylish.

Onyx

✨ Modern

Meaning: Black gemstone

Origin: Greek

Oz

✨ Modern

Meaning: Strength

Origin: Hebrew

Ozzy

✨ Modern

Meaning: Divine power

Origin: English

Ocean

✨ Modern

Meaning: Large body of water

Origin: English

Oaklen

✨ Modern

Meaning: Oak glade

Origin: English

Obie

✨ Modern

Meaning: Servant of God

Origin: Hebrew

Ode

✨ Modern

Meaning: Poem or song

Origin: English

Odie

✨ Modern

Meaning: Wealthy one

Origin: English

Odil

✨ Modern

Meaning: Prosperous

Origin: Germanic

🌍 Rare Baby Boy Names Starting With O

Names from around the world that bring cultural richness and global flair.

Oakes

🌍 Rare

Meaning: Near the oak trees

Origin: English

Oakwood

🌍 Rare

Meaning: From the oak forest

Origin: English

Obafemi

🌍 Rare

Meaning: King loves me

Origin: Yoruba

Obasi

🌍 Rare

Meaning: In honor of God

Origin: Igbo

Obiora

🌍 Rare

Meaning: Opinion of people

Origin: Igbo

Ochs

🌍 Rare

Meaning: Ox

Origin: German

Octave

🌍 Rare

Meaning: Eighth

Origin: French

Odell

🌍 Rare

Meaning: Woad hill

Origin: English

Odhrán

🌍 Rare

Meaning: Pale green

Origin: Irish

💎 Unique Baby Boy Names Starting With O

Distinctive and memorable, these names stand out without feeling strange.

Oberon

💎 Unique

Meaning: Noble bear-like

Origin: Germanic

Octavius

💎 Unique

Meaning: Eighth Roman

Origin: Latin

Oles

💎 Unique

Meaning: Defender of men

Origin: Ukrainian

Olexa

💎 Unique

Meaning: Defender

Origin: Ukrainian

Olumide

💎 Unique

Meaning: God has arrived

Origin: Yoruba

Olusegun

💎 Unique

Meaning: God is victorious

Origin: Yoruba

Oluwafemi

💎 Unique

Meaning: God loves me

Origin: Yoruba

Onyeka

💎 Unique

Meaning: Who is greatest

Origin: Igbo

Orenthal

💎 Unique

Meaning: Old gold

Origin: Germanic

Orestes

💎 Unique

Meaning: Mountain man

Origin: Greek

Orfeo

💎 Unique

Meaning: Orpheus-like

Origin: Greek

Oriano

💎 Unique

Meaning: Of gold

Origin: Italian

Orin

💎 Unique

Meaning: Pale green tree

Origin: Irish

Oriole

💎 Unique

Meaning: Bird of orange plumage

Origin: Latin

Orison

💎 Unique

Meaning: Prayer

Origin: English

Orlan

💎 Unique

Meaning: Famous land

Origin: Germanic

Orland

💎 Unique

Meaning: Famous land

Origin: Germanic

Orlandus

💎 Unique

Meaning: Famous land Latin

Origin: Latin

Ossian

💎 Unique

Meaning: Little deer

Origin: Irish

Othmar

💎 Unique

Meaning: Prosperous

Origin: Germanic

Quick Reference: O Names at a Glance

Name	Meaning	Origin	Style
Oliver	Olive tree	Latin	🌟 Popular
Owen	Young warrior	Welsh	🌟 Popular
Oscar	God spear warrior	Irish	🌟 Popular
Otis	Wealth fortunate	Germanic	🌟 Popular
Omar	Prosperous long life	Arabic	🌟 Popular
Orion	Rising hunter	Greek	🌟 Popular
Orlando	Famous land	Italian	🌟 Popular
Otto	Wealth fortune	Germanic	🌟 Popular
Oakley	Oak meadow	English	🌟 Popular
Obinna	Heart of the father	Igbo	🌟 Popular
Octavio	Eighth	Spanish	🌟 Popular
Octavian	Eighth Roman	Latin	🌟 Popular
Oden	Ruler of all	Norse	🌟 Popular
Odin	Rage inspiration	Norse	🌟 Popular
Omari	Flourishing long life	Swahili	🌟 Popular
Oskar	God spear	Germanic	🌟 Popular
Osman	Young bustard	Turkish	🌟 Popular
Oswald	Divine power	Germanic	🌟 Popular
Odysseus	Wrathful traveler	Greek	🌟 Popular
Oleander	Like the plant	Greek	🌟 Popular
Onyx	Black gemstone	Greek	✨ Modern
Oz	Strength	Hebrew	✨ Modern
Ozzy	Divine power	English	✨ Modern
Ocean	Large body of water	English	✨ Modern
Oaklen	Oak glade	English	✨ Modern
Obie	Servant of God	Hebrew	✨ Modern
Ode	Poem or song	English	✨ Modern
Odie	Wealthy one	English	✨ Modern
Odil	Prosperous	Germanic	✨ Modern
Oberon	Noble bear-like	Germanic	💎 Unique
Octavius	Eighth Roman	Latin	💎 Unique
Oles	Defender of men	Ukrainian	💎 Unique
Olexa	Defender	Ukrainian	💎 Unique
Olumide	God has arrived	Yoruba	💎 Unique
Olusegun	God is victorious	Yoruba	💎 Unique
Oluwafemi	God loves me	Yoruba	💎 Unique
Onyeka	Who is greatest	Igbo	💎 Unique
Orenthal	Old gold	Germanic	💎 Unique
Orestes	Mountain man	Greek	💎 Unique
Orfeo	Orpheus-like	Greek	💎 Unique
Oriano	Of gold	Italian	💎 Unique
Orin	Pale green tree	Irish	💎 Unique
Oriole	Bird of orange plumage	Latin	💎 Unique
Orison	Prayer	English	💎 Unique
Orlan	Famous land	Germanic	💎 Unique
Orland	Famous land	Germanic	💎 Unique
Orlandus	Famous land Latin	Latin	💎 Unique
Ossian	Little deer	Irish	💎 Unique
Othmar	Prosperous	Germanic	💎 Unique
Oswaldo	Divine power	Spanish	🛡️ Strong
Othello	Prosperity in war	Germanic	🛡️ Strong
Othniel	Strength of God	Hebrew	🛡️ Strong
Ovid	Sheep	Latin	🛡️ Strong
Ozias	God strength	Hebrew	🛡️ Strong
Oziel	God is my strength	Hebrew	🛡️ Strong
Ozni	Hearing	Hebrew	🛡️ Strong
Otniel	Strength of God	Hebrew	🛡️ Strong
Onias	Gracious	Hebrew	🛡️ Strong
Omriel	God is my height	Hebrew	🛡️ Strong
Obadiah	Servant of God	Hebrew	📜 Biblical
Obed	Servant	Hebrew	📜 Biblical
Omri	Sheaf of grain	Hebrew	📜 Biblical
Onan	Strength	Hebrew	📜 Biblical
Oren	Pine tree	Hebrew	📜 Biblical
Ornan	Noisy	Hebrew	📜 Biblical
Ozem	I shall hasten	Hebrew	📜 Biblical
Othni	Time	Hebrew	📜 Biblical
Oakes	Near the oak trees	English	🌍 Rare
Oakwood	From the oak forest	English	🌍 Rare
Obafemi	King loves me	Yoruba	🌍 Rare
Obasi	In honor of God	Igbo	🌍 Rare
Obiora	Opinion of people	Igbo	🌍 Rare
Ochs	Ox	German	🌍 Rare
Octave	Eighth	French	🌍 Rare
Odell	Woad hill	English	🌍 Rare
Odhrán	Pale green	Irish	🌍 Rare

FAQs: Baby Boy Names Starting With O

Frequently Asked Questions

What are the best baby boy names that start with O?

Some of the most popular and well-loved baby boy names starting with O include: Oliver, Owen, Oscar, Otis, Omar. These names consistently rank high in U.S. baby name data and are universally recognized.

What are unique baby boy names starting with O?

If you want something distinctive, consider: Oberon, Octavius, Oles, Olexa, Olumide. These names are recognized but not overused, giving your son a distinctive identity.

What are biblical boy names starting with O?

Timeless, classic names starting with O include: Obadiah, Obed, Omri, Onan. These names have strong historical and cultural roots and never go out of style.

What are strong boy names starting with O?

Names that convey strength and resilience starting with O: Oswaldo, Othello, Othniel, Ovid. These names often have origins relating to warriors, protectors, or leaders.

What are short boy names starting with O?

Short, easy-to-remember names starting with O include: Owen, Otis, Omar, Otto, Oden. Short names are punchy, modern, and pair beautifully with long last names.

How do I choose a baby boy name starting with O?

Start with meaning and origin. Say the full name aloud with your surname to check the flow. Consider potential nicknames. Most importantly, choose a name that feels right for your family.

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