Baby Names That Start With O (Meaningful & Unique Choices)

Looking for baby names that start with O? From classic to quirky, this handpicked list of over 200 names covers boys, girls, and gender-neutral picks—each with meanings and origins. Whether you love nature names, celestial vibes, or vintage charm, there’s something perfect for your little one here.

• If you’re looking for a list of boy names, here is a great list for you.
• Need baby girl name inspo? Here is a great list as well.
• If you need girl and boy names – here is a list of more than 1400 baby names for both!

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Why Choose a Baby Name That Starts With O?

Names that begin with the letter O often have a whimsical, lyrical quality. Many are rooted in mythology, nature, and tradition—making them both meaningful and timeless. Plus, “O” names are rare enough to stand out, but familiar enough to feel accessible.

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Top Baby Names That Start With O (Organized by Category)

Let’s explore the most beautiful and unique baby names that start with O—separated by gender and style for easier skimming!

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Boy Baby Names That Start With O

These boy names range from classic to cool, and many include rich cultural or historical roots.

• Oliver – Latin, “olive tree” ?
  Find it in this bestselling personalized name book on Amazon
• Oscar – Irish, “friend of deer”
• Odin – Norse mythology, “fury; inspiration”
• Otis – German, “wealthy”
• Omar – Arabic, “flourishing, life”
• Orion – Greek, “rising in the sky; hunter constellation”
  ➤ Popular choice among celestial baby names!
• Ozzy – English, “divine power” (short for Oswald or Osmond)
• Onyx – Greek, “black gemstone”
• Oakley – English, “oak meadow”
  ➤ Pair it with forest-inspired names for a nature-themed combo.
• Otto – German, “wealth; fortune”

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Girl Baby Names That Start With O

From sweet to sassy, these “O” names for girls are both elegant and enchanting.

• Olivia – Latin, “olive tree” ?
  Olivia-themed nursery décor ideas on Amazon
• Ophelia – Greek, “help”
• Odette – French, “wealthy”
• Oriana – Latin, “dawn”
• Ottilie – German, “prosperous in battle”
• Octavia – Latin, “eighth”
• Ocean – English, “the sea”
  ➤ Want more water-inspired names? Visit baby names that mean water
• Odessa – Greek origin, possibly “long journey”
• Ora – Latin, “prayer” or “light”
• Olenna – Slavic, “bright, shining light”

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‍? Gender-Neutral Baby Names That Start With O

These unisex “O” names are perfect if you’re keeping baby’s gender a surprise or love a modern twist.

• Oakley – “from the oak meadow”
  ➤ Works beautifully for both boys and girls!
• Ocean – Powerful nature name with rising popularity
• Onyx – Chic and edgy gemstone name
• Omari – Swahili, “God is the highest”
• Ode – French/Greek, “poem” or “lyric”
• Oriel – Latin, “golden”
• Orin – Irish, “pale little one” or Hebrew, “light”
• Olive – A stylish alternative to Olivia
  Check out this cute Olive plush baby toy
• Ozzy – Short and punchy for any gender
• Osa – Swedish, “God is salvation”

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Rare & Unique Baby Names That Start With O

Craving something truly one-of-a-kind? These lesser-known names make a statement.

• Olivette – French, “little olive tree”
• Orlaith – Irish, “golden princess”
• Osias – Greek, “salvation of God”
• Oxley – Old English, “ox clearing”
• Ozara – Hebrew, “treasure”
• Orenda – Iroquois, “magic power”
• Ovidia – Latin, “sheep”
• Oceane – French, “ocean”
• Odion – African origin, “born of twins”
• Ophira – Hebrew, “gold”

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Bridgerton-Inspired Baby Names Starting With O

Looking for Regency-era charm? Check out Bridgerton baby names for more vintage inspiration.

• Octavius – Regal and refined
• Ophelia – A literary and romantic favorite
• Orlando – Shakespearean flair
• Odessa – Stylish and noble

Nature-Inspired Baby Names That Start With O

1. Olive – “Olive tree”
2. Ocean – “The sea”
3. Onyx – “Gemstone”
4. Oakley – “From the oak meadow”
5. Orchid – Flower name
6. Oceane – French, “ocean”
7. Orion – “Hunter constellation”
8. Oriel – “Golden” (sunlight)
9. Osier – A type of willow tree
10. Ozara – Hebrew, “treasure”
11. Oleander – A flowering shrub
12. Olivine – A green mineral
13. Orinoco – A major river in South America
14. Orenda – “Spiritual force in nature”
15. Oxley – “Ox clearing”
16. Orella – “Golden”
17. Oakes – “From the oak”
18. Oba – Yoruba, “King/River deity”
19. Orla – Irish, “golden princess”
20. Ona – Lithuanian, “grace” – also tied to water in some cultures

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Literary & Mythological Baby Names That Start With O

1. Ophelia – From Shakespeare’s Hamlet
2. Orlando – From Shakespeare’s As You Like It
3. Odysseus – Greek hero of The Odyssey
4. Oberon – King of the fairies in A Midsummer Night’s Dream
5. Oedipus – From Greek tragedy
6. Orion – Mythological hunter
7. Oisin – Irish mythology, poet and warrior
8. Orestes – Son of Agamemnon in Greek myth
9. Olivette – Vintage, literary style
10. Omri – Biblical name, also appears in fiction
11. Othello – From Shakespeare’s Othello
12. Orpheus – Legendary musician and poet
13. Olenna – Game of Thrones reference
14. Orual – From C.S. Lewis’s Till We Have Faces
15. Olwen – Welsh myth, means “white footprint”
16. Oona – Often used in fantasy literature
17. Oriana – Literary and poetic name meaning “dawn”
18. Orobas – Mythical name from demonology texts
19. Obadiah – Biblical and literary name
20. Opalina – Vintage poetic flair

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Vintage Baby Names That Start With O

1. Otis – 1920s charm
2. Olive – Popular in the 1910s
3. Odette – Elegant and old-fashioned
4. Orville – Vintage Americana
5. Octavia – Ancient Roman and vintage revival
6. Otto – Strong German vintage pick
7. Oswald – Formal, classic feel
8. Ora – Turn-of-the-century favorite
9. Ona – Vintage gem
10. Odelia – Retro flair
11. Orin – Underused vintage
12. Orpha – Rare old-fashioned name
13. Opal – 1920s gemstone classic
14. Orville – Inventor vibe
15. Orelia – Rare, vintage style
16. Obediah – Old-fashioned with religious roots
17. Ossie – Vintage nickname vibe
18. Odelina – Charming antique feel
19. Orson – “Bear cub” — vintage literary style
20. Omie – Turn-of-century nickname

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✨ Celestial Baby Names That Start With O

1. Orion – Hunter constellation
2. Oberon – Uranus moon
3. Ophelia – Another moon of Uranus
4. Osiris – Egyptian god associated with the afterlife and stars
5. Omega – Final letter of the Greek alphabet, cosmic vibes
6. Orbit – Bold and celestial
7. Olivine – Mineral found in meteorites
8. Orphic – Relating to the cosmos and mysticism
9. Omari – Connected with spiritual “high” meanings
10. Orenda – Spiritual energy in nature and cosmos
11. Ozma – Princess of Oz but sounds like a star
12. Orrin – Similar to Orion, light-themed
13. Odessa – Soft cosmic tone
14. Olympia – Associated with Mount Olympus, home of gods
15. Onara – Fictional galactic name
16. Onoa – Invented but celestial-sounding
17. Orano – Space-like sound, unique
18. Orel – Hebrew for “light of God”
19. Oriole – Starry and soft
20. Opaline – Gemstone glow, celestial sound

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Cultural Baby Names That Start With O (Global Origins)

1. Omari – Swahili, “God is the highest”
2. Oksana – Ukrainian, “praise be to God”
3. Oluwafemi – Nigerian Yoruba, “God loves me”
4. Osman – Turkish/Arabic, “pure”
5. Osei – Ghanaian Akan, “noble”
6. Obasi – Nigerian Igbo, “in the honor of the king”
7. Oriana – Latin, “dawn”
8. Odion – Nigerian, “first of twins”
9. Orlaith – Irish, “golden princess”
10. Omar – Arabic, “flourishing”
11. Onika – African/Caribbean, “warrior spirit”
12. Osvaldo – Spanish form of Oswald
13. Oumou – West African origin
14. Oriol – Catalan, “golden”
15. Ola – Scandinavian or Nigerian, dual origin
16. Oliviero – Italian variant of Oliver
17. Orencio – Spanish, rare cultural pick
18. Oleg – Russian, “holy”
19. Ozan – Turkish, “bard”
20. Omarion – African-American modern invention

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Artistic, Musical, and Creative O Names

1. Opal – Creative and gem-themed
2. Orly – Hebrew, “light for me” — short and artsy
3. Orenda – “Power of the spirit,” creative energy
4. Ode – Poetic
5. Oriana – Golden light
6. Orpheus – Musician from myth
7. Olwen – Soft and whimsical
8. Odetta – Jazz/blues singer name
9. Olivine – Earthy and creative
10. Orion – Bold, stargazer name
11. Ophelie – French version of Ophelia
12. Octavien – Artist name
13. Orla – Simple and creative
14. Ozara – Evocative and dreamy
15. Oona – Whimsical, often used by artists
16. Oriole – Musical bird
17. Otello – Opera character
18. Oxley – Graphic name, visually striking
19. Orin – Light and lyrical
20. Opaline – Shimmery, poetic feel

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Best Baby Name Books on Amazon

Looking to explore more than just the names? These books are loaded with inspiration.

• ? The Baby Name Wizard
• ? 100,000+ Baby Names: The Most Helpful, Complete, & Up-to-Date Name Book
• ? Baby Names 2024

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✨ Final Thoughts on Baby Names That Start With O

Choosing the perfect baby name is such a special moment—and this list of baby names that start with O gives you hundreds of beautiful, meaningful options to consider. Whether you’re going with something trendy like Olivia or unique like Orenda, the right name will just feel right.

Pin this list on Pinterest so you can come back to it later!

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❓ FAQ: Baby Names That Start With O

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