Boys Baby Names Starting With O

Olivia has held #1 girl name for years. Oliver is in the top 5 for boys. If O names are your territory, you're starting with the most popular letter in America right now.

825 names — click any name for full meaning, origin, and safety analysis

Can't decide? Let a tournament narrow it down.

#3

Oliver

olive tree

English
#26

Owen

young warrior

Welsh
#217

Oscar

deer lover, champion warrior

English
#260

Omar

flourishing, long-lived

Arabic
#274

Otto

wealth, fortune, prosperity

German
#326

Orion

rising in the sky, boundary

English
#359

Onyx

fingernail, claw

American
#411

Oakley

clearing among oaks

English
#480

Odin

divine inspiration, fury, frenzy

Norse

Ocean

world-encircling waters

American

Ozzy

divine power (from Oswald)

English

Omari

God the highest (variant interpretation)

Swahili-speaking African

Otis

wealth, fortune

Germanic

Orlando

glory of the land

Italian

Ozias

God is my strength

Hebrew

Osiris

throne of the eye (possible etymology)

Egyptian

Osman

founder, builder (cultural meaning)

Turkish

Ollie

elf warrior

English

Oziel

God is my strength

Jewish

Osiel

God is my strength

Spanish

Oakland

land of oak trees

American

Osvaldo

divine power, God's power

Spanish

Octavio

eighth

Spanish

Oren

pine tree

Hebrew

Ozzie

divine bear

English

Obadiah

servant of God

Jewish

Orson

little bear, bear cub

English

Ori

light of God

Hebrew

Oaklen

strong as an oak

English

Oskar

divine spear, god's spear

Scandinavian

Oziah

God is my strength

Jewish

Oslo

god's field, divine meadow

Norwegian

Oaklee

oak woodland settlement

American

Obed

servant, worshipper of God

Hebrew

Octavius

of the eighth

Roman

Omer

eloquent, flourishing

Israeli

Oswald

godly ruler

English

Olin

forefather

Scandinavian

Om

sacred primordial sound

Indian

Oden

the frenzied one, the inspired

Scandinavian

Orhan

camp ruler, military commander

Turkish

Orin

light, pale

Irish

Olsen

son of Ole (ancestor)

Norwegian

Octavian

eighth

Roman

Osmar

god + famous

Portuguese

Oak

strength, endurance

English

Osiah

God supports

American

Omarion

flourishing, long-lived

African American

Olivier

symbol of peace and wisdom

French

Orrin

pale, light-skinned

American

Oshea

descendant of the hawk-like one (Irish)

Hebrew

Oaks

oak trees, oak grove

American

Olen

ancestor's descendant

Scandinavian

Oswaldo

rule of gods, godly ruler

Spanish

Oakes

dweller near the oak trees

American

Ojas

divine vitality, life force

Indian

Ousmane

form of Uthman, companion of the Prophet

West African

Oz

strength, power, courage

Israeli

Oaklan

land of oaks

American

Ovidio

of the sheep family, shepherd lineage

Italian

Odysseus

wrathful, to cause pain

Greek

Omri

eloquent, verbose speaker

Hebrew

Oseias

deliverer, liberator

Brazilian

Opie

surname used as given name

American

Omega

completion, eternity

American

Olson

ancestors relic, heir

American

Oaklyn

oak lake

American

Owais

little wolf

Arabic

Oumar

flourishing, long-lived

West African

Oriel

golden chamber, bay window

English

Oberon

elf ruler

English

Othniel

strength of God

Hebrew

Obi

child born at a prosperous time

Igbo

Oryan

little king

Hebrew

Oswin

God's friend, divine companion

English

Oseas

he saves, deliverer

Portuguese

Ollivander

olive tree man

English

Othman

ruler, king

Arabic

Osias

deliverance, rescue

Hebrew

Oisin

little deer, fawn

Irish

Orlin

eagle, golden eagle

Bulgarian

Owyn

young warrior

Welsh

Obaida

little servant of God

Arabic

Ostin

magnificent one

American

Olan

possibly related to Old Norse Olaf (ancestor's ...

Irish

Odell

place of the blue dye plant

English

Omir

long life, age

Arabic

Olvin

friend of elves, wise companion

Scandinavian

Orian

my light

Hebrew

Oran

pale, sallow-complexioned

Irish

Ozan

storyteller, keeper of oral tradition

Turkish

Oaklin

oak tree by the pool or stream

American

Obsidian

volcanic black glass

American

Oaken

strong and enduring as oak wood

English

Ole

ancestor's relic, descendant

Norwegian

Odyn

fury, divine madness, inspiration

Norse

Ozziel

God is my strength

Hebrew

Onix

fingernail, claw

American

Obie

worshiper of God

English

Olyver

ancestor's descendant (alternative etymology)

English

Olivander

olive warrior

English

Ossian

little deer

Irish

Obama

curved riverbank or piece of land

Kenyan

Olivia

symbol of peace and wisdom

English

Othello

wealth, fortune, prosperity

Italian

Oli

olive tree

English

Oday

to pass quickly, to flow

Arab

Ozlo

divine meadow

Norwegian

Ozion

God is my strength (variant of Uzziah)

Hebrew

Oleander

olive tree + man (Greek etymology)

English

Osmin

divine protection

German

Osher

happiness, good fortune

Jewish

Olliver

olive tree, peace

English

Ottis

Son of Otto

American

Osborne

divine bear

English

Odis

wealth, prosperity, riches

American

Ozai

fictional Fire Lord, invented name

American

Osayd

young lion, lion cub

Arabic

Oneal

cloud

Irish

Osmond

Ollin

Onyxx

Osbaldo

Otoniel

Oasis

Osama

Oseph

October

Ociel

Ozair

Ollyver

Orville

Omiras

Octavious

Olly

Oryn

Osean

Ovadia

Obert

Obaloluwa

Onan

Ohtli

Ojani

Olamide

Othmar

Onis

Oluwajoba

Ostap

Odinn

Otavio

Ohtani

Ossiel

Omni

Oshun

Oreoluwa

Olek

Oluwatomisin

Oluwaferanmi

Owin

Omid

Osei

Orren

Omere

Oshen

Orryn

Oluwanifemi

Ovi

Ostyn

Ovie

Owens

Oleksandr

Ople

Ogden

Onathan

Obinna

Oluwakorede

Oheneba

Othell

Obidiah

Odonis

Odas

Olindo

Omero

Ohaji

Osinachi

Orest

Oliverjames

Ozil

Ozais

Onaje

Odel

Onyekachi

Oluwafemi

Oshay

Oso

Ozni

Okechukwu

Oshane

Odyssey

Ondrej

Showing top 200 names by popularity. Use the gender filter or browse & search all names to find more.

Browse by Letter

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Looking for something specific?

Browse by popularity, origin, meaning, or style. Or start a tournament and let head-to-head matchups pick your favorite.

Explore More Name Generators