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.

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Name Meaning Origin Popularity Other Gender
O’Brien

High, noble

Irish

O-

Descendant of

Irish

Oak

Near the oak trees; meadow of oak trees

English

Oakes

Near the oak trees

English

Oaklee

Meadow of oak trees

English

#1,881 (0.0016%)  
Oakleigh

Meadow of oak trees

English

Oakley

Meadow of oak trees

English

#453 (0.0433%)  
Oakly

Meadow of oak trees

English

Oaks

Near the oak trees

English

Oates

Wealth; son of Otto

German

Obadiah

Servant of God

Hebrew

#1,663 (0.0024%)  
Obadias

Servant of God

Hebrew

Obadya

Servant of God

Hebrew

Obafemi
Obama

Crooked, somewhat bent

African

Obasi
Obed

Servant of God; worshipper, follower

Hebrew

#1,613 (0.0026%)  
Obediah

Servant of God

Hebrew

Oberon

Royal bear

German

Oberron

Noble or royal bear

German

Obert

Wealthy, bright

German

Obi

Heart

African

Obie

Servant of God

Hebrew

Obike
Ochs

Near the oak trees

English

Ocia
Octave

Eighth

Latin

Octavian

Eighth

Latin

#2,837 (0.0004%)  
Octavio

Eighth

Latin

#1,246 (0.0057%)  
Octavious

Eighth

Latin

Octavius

Eighth

Latin

#1,795 (0.0018%)  
Octavo

Eighth

Latin

Octavus

Eighth

Latin

Octovien

Eighth

Latin

Orlando

“The fame of the land,” an Italian variant of Roland, which see.

Spanish

#639 (0.0246%)  
Orlin

Spanish

Orlondo

Spanish

Orman

Sea man; spear man

German

Ormand

Sea man; spear man; mountain of bears; spear or ship protector

German

Ormond

Mountain of bears; spear or ship protector

English

Ormonde

Mountain of bears; spear or ship protector

French

Orsen

Bear

Latin

Ormondo

French

Orsin

Bear

Latin

Orsini

Bear

Latin

Orsino

Bear

Latin

Ornet

Little eagle

French

Orsis

Bear

Latin

Ornette

Little eagle

French

Orson

Bear

Latin

#2,206 (0.0009%)