664 results  •  Page 1 of 14

Name Meaning Origin Popularity Other Gender
Ordean
Olav

Ancestor's relic

Scandinavian

Ondre

Greek

Olivier

Olive tree

Latin

Orpheus

Night's darkness

Greek

Oded

To Encourage

Hebrew

Oengus

One vigor

Irish

Ochs

Near the oak trees

English

Otess

Wealth; son of Otto

German

Olden
Osage

Native American

Osmin

God's protection

Scandinavian

Ousmane
Obed

Servant of God; worshipper, follower

Hebrew

Odd
Otoniel
Ona
Odi

Wealthy defender

Anglo-Saxon

Oaklynn
Olusijibomi
Otho

Wealth

German

Omega

The Greek Letter

Greek

Okoth

Born when it was Raining

African

Ojani
Orest
Oryan
Osias

Salvation

Hebrew

Osier

Near the willows

English

Ounslow

Enthusiast's hill

English

Oxton

From the ox farm

English

Ormund

Spear defender

English

Outram

“A free-lance warrior,” from the Middle English oute (out, free) and rauen (a raven, symbolic of a warrior).

English

Orrik

From the ancient oak tree

English

Odysse

Angry man

Greek

Oringo

He Who Likes the Hunt

African

Ocia
Ortiz
Okes

From the oak

English

Octavo

Eighth

Latin

Octavian

Eighth

Latin

Osgood

Goth god

English

Oles
Ousman
Omawnakw

Cloud feather (Hopi)

Native American

Outacite

Man Killer

Native American

Olvin
Osweald

Divinely powerful

English

Osvald

God's power

German

Osmunde

God's protection

Scandinavian

Ottildo

Fortunate or prosperous in battle

German

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.