419 Joyful Girl Names That Start With O

Baby girl names that start with O have an ornate literary history. O is the fifteenth letter of the Latin alphabet and emerges from the Phoenician ‘ayin’ meaning ‘eye’ (1). The letter was adapted into Greek as the omega for the long sound, large O, and as the omicron for the vowel form, small O.

In English, the long and short O have distinct sounds based on their origin. The long O in English derives its sound from the Old English long O and thus is a diphthong with the complex sound ‘ou’. This is reflected in Ophelia meaning ‘help,' which is pronounced as ‘ou-fil-ja’. The short O derives its sound from the Middle English short O and thus is either more open and lower or closed and rounded depending on which consonant it is paired with. This is reflected in Olga, which means ‘holy,’ pronounced with an open sound, ‘ol-ga.' However, in Spanish, the short O becomes ‘ue’.

Feminine O names such as Olivia and Odalys are among the top 1000 names in the US (2). Additionally, names like Odette, meaning ‘wealth’ in German, or Octavia, meaning ‘eighth’ in Roman, and O-girl names have gained fame and favor in both fiction and real life. So delve into this list of popular girl names starting with O with original and optimistic meanings to find one you like.

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NameGenderMeaning
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Olivia
Baby Girl Sign Girl Peace; Olive tree
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Olive
Baby Girl Sign Girl Olive tree
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Oaklynn
Baby Girl Sign Girl Oak clearing
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Octavia
Baby Girl Sign Girl Eight or eighth
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Ophelia
Baby Girl Sign Girl Help; Benefit
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Opal
Baby Girl Sign Girl Jewel
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Oaklyn
Baby Girl Sign Girl Oak clearing
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Odette
Baby Girl Sign Girl Wealth; Fortune; Heritage
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Oriana
Baby Girl Sign Girl Gold
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Odessa
Baby Girl Sign Girl To hate; Wrathful
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Ofelia
Baby Girl Sign Girl Help; Advantage
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Oona
Baby Girl Sign Girl Lamb; Universal; Happy
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Olympia
Baby Girl Sign Girl From Olympus; Mount Olympus
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Olyvia
Baby Girl Sign Girl Olive; Olive tree; Ancestor's descendant; All cautious
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Olga
Baby Girl Sign Girl Holy; Blessed; Invioilable
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Orla
Baby Girl Sign Girl Golden princess
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October
Baby Girl Sign Girl Eight; Eighth month
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Ohana
Baby Girl Sign Girl Family
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Odelia
Baby Girl Sign Girl Heritage; Wealth; I will thank Yahweh
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Orianna
Baby Girl Sign Girl Gold; Rising sun; The golden one; Daughter of the light/fire
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Oliviana
Baby Girl Sign Girl Olive; Olive tree; Gracious olive tree
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Oceana
Baby Girl Sign Girl Ocean; From the ocean
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Olena
Baby Girl Sign Girl Torch; Corposant; Moon; Ancestor's descendant
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Ona
Baby Girl Sign Girl Wave; Favor; Grace
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Ottilie
Baby Girl Sign Girl Prosperous in battle; Riches
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Oliva
Baby Girl Sign Girl Olive; Ancestor's descendant; Aware; All cautious
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Obinna
Baby Boy Sign Boy Heart of the father; Father's throne
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Olivianna
Baby Girl Sign Girl Olive; Olive tree
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Olivine
Baby Girl Sign Girl Olive; Olive tree
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Oksana
Baby Girl Sign Girl Hospitality
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Olina
Baby Girl Sign Girl Ancestor's descendant; Blessed; Sacred; Joy
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Oaklin
Unisex Baby Sign Unisex Oak clearing
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Olanda
Baby Boy Sign Boy Ancestor's descendant; Manly; Masculine
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Oliviah
Baby Girl Sign Girl Olive; Olive tree; Elf warrior
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Onna
Baby Girl Sign Girl To grant; To allow; Favor; Grace
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Oceanna
Baby Girl Sign Girl Ocean; From the ocean
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Oralia
Baby Girl Sign Girl Golden
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Oni
Baby Girl Sign Girl Today; Demon; Born on a holy ground; Shelter
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Oliana
Baby Girl Sign Girl Ancestor's descendant; Gracious; Heavenly light; Oleander
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Orchid
Baby Girl Sign Girl Eponymous flowering plant; Testicles
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Olenna
Baby Girl Sign Girl Torch; Corposant; Moon
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Orlena
Baby Girl Sign Girl Gold; Gilded
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Omaira
Baby Girl Sign Girl Prospering; Growing; Burgeoning; Blooming
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Otilia
Baby Girl Sign Girl Heritage; Wealth; Fortune
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Oriah
Unisex Baby Sign Unisex Golden
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Oceane
Baby Girl Sign Girl Ocean; From the ocean
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Ornella
Baby Girl Sign Girl Flowering ash tree
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Ostara
Baby Girl Sign Girl Germanic goddess of fertility and spring; East; Toward the sunrise
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Omelia
Baby Girl Sign Girl Conversation; Sermon
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Ozlem
Unisex Baby Sign Unisex Yearning; Missing
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Olanna
Unisex Baby Sign Unisex Father's jewel
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Odilia
Baby Girl Sign Girl Wealth; Fortune; Heritage
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Omnia
Baby Girl Sign Girl Wish; Hope
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Ola
Baby Girl Sign Girl Ancestor's descendant; People's victory; Wealth; Honor; Respect; Dignity; Glory
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Orabella
Baby Girl Sign Girl Given to prayer; Entreatable
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Oliwia
Baby Girl Sign Girl Olive; Olive tree; Ancestor's descendant; All cautious
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Orah
Baby Girl Sign Girl Light; Prayer
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Ova
Baby Girl Sign Girl Egg; Edge of a sword; Awe; Ancestor's descendant
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Olevia
Baby Girl Sign Girl Branch of the olive tree representing peace
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Okalani
Baby Girl Sign Girl Heaven; Heavenly child
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Oriane
Baby Girl Sign Girl Gold; Flower; Rising sun; The golden one
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Onalee
Unisex Baby Sign Unisex Favor; Grace; Clearing
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Obaida
Unisex Baby Sign Unisex Servant of God
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Orlaith
Baby Girl Sign Girl Golden princess
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Olivette
Baby Girl Sign Girl Olive tree; Ancestor's descendant; All cautious
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Ozella
Baby Girl Sign Girl Strength; Power
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Odeya
Baby Girl Sign Girl I will thank God
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Orlanda
Baby Girl Sign Girl Renowned in the land
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Ogechi
Baby Girl Sign Girl A fresh and successful ending of a struggle or contest
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Oluchi
Baby Girl Sign Girl Work of God
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Olinda
Baby Girl Sign Girl Wild fig tree
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Orelia
Baby Girl Sign Girl Expensive and glittering as gold; Gilded
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Ovee
Unisex Baby Sign Unisex A poetic sect in devotional script; Happy; Small
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Ouida
Baby Girl Sign Girl Famous warrior
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Ondria
Baby Girl Sign Girl Possessing the attitudes of a man
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Oonagh
Baby Girl Sign Girl Lamb; Pure; One
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Ozioma
Baby Girl Sign Girl The message, God's good news
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Oleta
Baby Girl Sign Girl Truth
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Ophira
Baby Girl Sign Girl Expensive gold
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Onie
Baby Girl Sign Girl Lamb; Favor; Grace
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Olesia
Baby Girl Sign Girl Defending men; Forest; Winged one
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Oviya
Baby Girl Sign Girl Painting; Artist; Beautiful drawing or art
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Onnika
Baby Girl Sign Girl Light reflection of nimble or shine
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Oceania
Unisex Baby Sign Unisex River; Body of water
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Orquidea
Baby Girl Sign Girl Orchid
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Omaya
Unisex Baby Sign Unisex Life-giver; Servant of God
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Omera
Unisex Baby Sign Unisex Life; Sheaf of wheat
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Onisha
Baby Girl Sign Girl Lord of the mind
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Orianthi
Baby Girl Sign Girl Flower of the mountain; To Excite
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Olimpia
Baby Girl Sign Girl The one who is from the hill Olympus
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Onika
Baby Girl Sign Girl Favor; Grace; Demon flower
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Onora
Baby Girl Sign Girl Deserving of integrity
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Ottilia
Baby Girl Sign Girl Heritage; Wealth; Fortune
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Oya
Baby Girl Sign Girl Lace; Youruban Goddess of storms and winds; She tore
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Osmara
Baby Girl Sign Girl God; Famous
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Oprah
Baby Girl Sign Girl Back of the throat; Fawn
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Olufunke
Baby Girl Sign Girl The one who was gifted from the highest place to be loved
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Orlagh
Baby Girl Sign Girl Golden princess
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Odile
Baby Girl Sign Girl Wealth; Fortune; Heritage
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Olesya
Unisex Baby Sign Unisex Girl from a forest; Defender of mankind
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Girl names exuding charm and uniqueness cannot go wrong. Our list of baby girl names that start with O has beautiful options, ranging from timeless to modern. You may either go for Oadira or Oeshi based on what rings well with you. If you are more inclined to your culture and want your princess to imbibe the same, you can go with names that have cultural significance. So, keep going through the list until you find the best one.

Infographic: Unique Baby Girl Names With The Letter O

Some letters lead to unique names, and the letter O is one of them. Many parents consider naming their child with a name beginning with this later for this will make their name truly unique. If you want to find names with a suitable meaning that begins with the letter O, we can be of help. Read through the infographic below as we present names for your beautiful baby girl.

outstanding baby girl names with the letter o (infographic)

Illustration: Momjunction Design Team

Frequently Asked Questions

1. What are some traditional baby girl names that start with the letter O?

Some traditional feminine names starting with O are Olivia and Olive, both derived from the Latin name Oliva, meaning ‘olive.’ Octavia is a Latin name which means ‘eight’ and Ophelia is a Greek name meaning ‘help,’ or ‘advantage.’ Oakley, Oakleigh, or Oaklee mean ‘oak clearing.’

2. Who are some famous or notable women with names that start with O?

Some notable women whose names begin with the letter O are the multi-talented Oprah Winfrey, Miss USA and Miss Universe Olivia Culpo, singers Olivia Rodrigo and Olivia Newton John, and actresses Olivia Munn, Olga Kurylenko, Octavia Spencer, and Olivia Wilde.

3. What are some rare baby girl names that start with O?

Olesia, an extremely rare variant of the name Alexander meaning ‘defender of men,’ Ottilie, a German name which means ‘heritage,’ Ovidia, a Roman name which means ‘sheep,’ and Odessa which is the feminine form of Odysseus.

4. What are some variations or alternate spellings of baby girl names that start with O?

Names like Oakley contain spelling variants like Oaklee, Oakleigh, Oaklyn or Oaklynn. Ocean may also be spelled as Océane, and Odilia may be spelled as Odelia, Odalis, Odetta, Ottilia, or Otylia.

5. What are some nicknames or pet names that can be derived from baby girl names that start with O?

Some nicknames for Olivia can be Liv, Ollie, Livie, Olive, or Livy. Nickname suggestions for Ophelia can be Ophie, Lia, Effy, Fifi, Ophy, or Phe, and pet names for Octavia can be Octi, Tia, Vivi, Ottie, or Tavia.

References

MomJunction's articles are written after analyzing the research works of expert authors and institutions. Our references consist of resources established by authorities in their respective fields. You can learn more about the authenticity of the information we present in our editorial policy.
  1. The Origin of the Alphabet.
    https://webspace.ship.edu/cgboer/alphabet.html
  2. Popular Names in 2000.
    https://www.ssa.gov/cgi-bin/popularnames.cgi

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