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Name Meaning Origin Popularity Other Gender
Olvan

A variant form of Oliver.

On

Peace

Chinese

Odd
Osiah
Oracle

Prophecy

Greek

Okhmhaka

Little wolf (Cheyenne)

Native American

Orenthal

Pine tree; fair, pale

Irish

Ocheckka

Four Legs

Native American

Oleksi
Othomann

Wealthy

German

Odie

Woad hill

English

Oke

Deer lover

Polynesian

Osbaldo
Octaviano
Osburt

Divinely brilliant

English

Oskar

Spear of the gods

English

Ott
Octovien

Eighth

Latin

O’Shea

Descendant of

Irish

Odulf

Prosperous wolf

German

Odhert

Wealthy

German

Ozias

Strength from God

Hebrew

Odies
Orlondo

Spanish

Osweald

Divinely powerful

English

Osvaldo

God's power

German

Ollis
Oluwatimilehin
Olindo

Scented

Latin

Olsen
Orvelle

Gold town

French

Oberron

Noble or royal bear

German

Orbin
Olivero

Olive tree

Latin

Octavus

Eighth

Latin

Osceola

Black Drink Bellower

Native American

Om
Odysse

Angry man

Greek

Ogden

Oak valley

English

Olatunde
Olof

Ancestor's relic

Scandinavian

Ovadiach

Servant of God

Hebrew

Orry

Golden

Latin

Onnjel

Messenger; messenger of God

Greek

Owin

Born of yew; youth

Scottish

Orwynn

Spear friend

English

Onorio
Onyx

Precious gemstone

Latin

Ord

Spear

Anglo-Saxon

Oaklee

Meadow of oak trees

English

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.