Looking for a Christian baby boy name starting with the letter O? Here are 100 Christian boy names beginning with O, each with its meaning, including Oliver (Olive tree), Owen (Young warrior), Oscar (Divine spear).
Christian names draw on the Bible, the saints and the European languages where Christianity spread: Hebrew, Greek, Latin, English, French, Spanish, Italian, German and the Slavic languages. Many families pick a saint’s name or a biblical virtue, then choose a spelling that suits their language.
Christian boy names starting with O and their meanings
Oliver – Olive tree
Owen – Young warrior
Oscar – Divine spear
Orlando – Renowned in the land
Otto – Wealthy
Osmond – Divine protection
Orion – A constellation of stars
Oren – Pine tree
Orville – Gold town
Omri – Highness, my life
Obadiah – Servant of God, a prophet
Octavian – Eighth
Octavius – Eighth
Odell – Wooded hill
Odo – Wealthy
Olaf – Ancestor’s heir, a saint
Olivier – Olive tree
Orestes – Mountain
Oswald – Divine power, a saint
Othniel – Lion of God, a judge
Ottavio – Eighth
Otis – Wealthy
Ovid – Sheep
Ozias – Strength of the Lord
Ogden – Oak valley
Oisin – Little deer
Olin – Holly
Olivero – Olive tree
Onesimus – Useful, a companion of Paul
Orel – Eagle
Orin – Pine tree
Ormond – Red
Osborne – Divine bear
Osric – Divine ruler
Oswin – Divine friend
Ottokar – Wealthy watchman
Owain – Young warrior
Oakley – Oak meadow
Obed – Servant, father of Jesse
Odilo – Wealthy, a saint
Olav – Ancestor
Oleg – Holy
Oliviero – Olive tree
Onofrio – Always happy, a saint
Oriel – Golden
Orson – Bear cub
Osmund – Divine protector, a saint
Osvaldo – Divine power
Ozzie – Divine power
Olindo – Fragrant
Ollie – Olive tree
Oran – Pale green
Orland – Famous land
Orrin – River
Osias – Salvation
Otniel – Strength of God
Ozwin – Friend of God
Oriol – Golden
Onesiphorus – Bringer of profit
Osiah – Strength
Odhran – Pale green, a saint
Odilon – Wealthy
Olbrecht – Noble bright
Onufry – Always good
Orazio – Timekeeper
Osvald – Divine power
Otakar – Wealth
Ottone – Wealth
Ottmar – Famous for wealth
Oszkar – Divine spear
Oddvar – Point warrior
Obadias – Servant of God
Octave – Eighth
Odran – Pale green
Oliverio – Olive tree
Ondrej – Manly
Onorato – Honoured
Orestis – Mountain
Orlande – Famous land
Oskar – Divine spear
Osvaldas – Divine power
Otmar – Famous wealth
Ovidio – Sheep
Oldrich – Rich ruler
Olegario – Holy
Olen – Ancestor
Olivio – Olive
Onesime – Useful
Orsino – Bear
Osip – God will increase
Ottorino – Wealthy
Ovidiu – Sheep
Ohannes – God is gracious
Ondre – Manly
Orval – Golden valley
Osgood – Divine goth
Otho – Wealth
Ottavino – Eighth
Olaus – Ancestor
Onesimos – Useful
Tips for choosing the right name
- Consider how the name sounds in the languages your family speaks.
- Keep a shortlist of 3–5 names and see which one feels right after a few days.
- Think about nicknames and initials the name might create.
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