🌟 200+ 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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