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Name Meaning Origin Popularity Other Gender
Ottis

Wealth; son of Otto

German

Olympus

From Mount Olympus

Greek

Oakley

Meadow of oak trees

English

Ozias

Strength from God

Hebrew

Oso
Ottild

Fortunate or prosperous in battle

German

Orrik

From the ancient oak tree

English

Opie
Odolf

Prosperous wolf

German

Orange
Oringo

He Who Likes the Hunt

African

Olivio

Olive tree

Latin

Osryd

Divine counselor

English

Ottaviano
Osmarr

Divinely glorious

English

Ohad

Loved one

Hebrew

Ordean
Onan

Strength, power

Hebrew

Ottie
Oliver

Olive tree

English

Owney

Green

Irish

Okonkwo
Ota

Wealth

German

Other
Orvyn

Brave friend

Anglo-Saxon

Oisin

Small deer

Gaelic

Oran

Light; pale

Irish

Ozer

God's Helper

Hebrew

Ottone

Wealth

German

Oluwatamilore
Orick

From the ancient oak tree

English

Ohngel

Messenger; messenger of God

Greek

Oberon

Royal bear

German

Odovacar
Ocumwhowurst

Yellow wolf (Cheyenne)

Native American

Omet

My light

Hebrew

Orsino

Bear

Latin

Orsen

Bear

Latin

Octavo

Eighth

Latin

Oaklan

Oak land

English

Ormeman

Spearman

English

Olvan

A variant form of Oliver.

Ormondo

French

Ophir

Gold

Hebrew

Orton

Shore settlement

English

Oz

Strength

Hebrew

Odhran

Pale

Irish

Olukayode
Oscar

Friend of deer

Gaelic

Ormonde

Mountain of bears; spear or ship protector

French

With an incredible starting letter, boy names that start with O are finding their way to the top of the charts. A wholesome letter with out-of-this-world charm, the letter O is a shining star of the vowel baby name trend. O names for boys are charismatic and approachable, retaining a charm that can’t be ignored.

While the baby boy names that start with O are beloved for their friendly side, there are quite a few strong boy names among the ranks as well. There are outworldly strong picks like Octavian and Osvaldo as well as names with strong meanings like Osman’s “God’s protection” and Ojas’ “strong one.”

As baby boy names starting with O heat up on the charts, there are still monikers waiting in the shadows for their time on top. These unique boy names that start with O include Osirus and Oren, two cool names with otherworldly appeal.

Sometimes the best way to find a name is to explore origins, keeping an open mind to those outside of your background. Gain inspiration from Latin names like Orson and Ollie or get to know Greek picks like Orion and Omega. With baby boy names starting with O, there’s something for every style.