
From Obelia to Ozora and everything in between, hundreds of baby girl names starting with the letter O along with the meanings and origin of each name.
Baby Naming Tip – Consider how long your child's first name will be and the number of syllables it has. Very long first names when paired with long last names can be difficult to write and fit in forms, and very short ones may sound or look odd when written out. Baby girl names flow best when the number of syllables is different in the first name and last name.

Most Popular Baby Girl Names Starting with O
First we'll start with the most popular baby girl names from 2018. They were:
- Olivia
- Olive
- Ophelia
- Oakley
- Octavia
- Oaklyn
- Oaklynn
- Opal
- Oaklee
- Oakleigh
- Ocean
- Odessa
- Oriana
- Odette
- Olyvia
- Onyx
- Oona
- Ollie
- Ofelia
- Olympia

Olivia was the most popular baby girl name starting with O in 2018. This should come as no surprise as Olivia has been the most common baby girl name starting with O as far back as 2009. What a run!
Here’s how the top three names have looked over the past decade:

Olivia wasn’t just popular for O girl names in 2018. Overall it was the number 2 most popular name among all baby girl names in 2018. Here’s how it looked when compared to all baby girls born in 2018.

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Just for fun, let’s take a look at the most popular baby girl names beginning with O throughout history.

Unique Baby Girl Names Starting With O
While it’s fun to see what lots of other people are naming their babies, many people prefer to find baby names that are more uncommon. To that end, below is the some of the more unique baby girl names starting with O.
- October
- Olga
- Oaklie
- Oluwadarasimi
- Ora
- Odalys
- Ona
- Orion
- Odyssey
- Orianna
- Oceana
- Oliviana
- Oumou
- Orla
- Odelia
- Oliviah
- Orly
- Ottilie
- Owen
- Ohana
Overall, October was the 2717th most popular girl name in 2018 with 63 babies. That means there were 284x more Olivias than Octobers last year. That makes it a very unique name!
If you don’t have your name in mind yet, don’t worry! Below we present a list of literally every baby girl name — including middle names starting with O, the name’s meaning and origin. Good luck and have a wonderful day.
Oanez through Oksana
- Oanez Breton
- Oba Nigerian — An ancient river goddess.
- Obelia Greek — A pillar or needle.
- Octavia Latin — The eighth.
- Oda Teutonic — Rich.
- Odea walker by the road — Odee
- Odelia Hebrew — I will praise God.
- Odera Hebrew — plough
- Odessa Greek — Along journey.
- Odetta — Melody.
- Odette French — A home-lover.
- Odile French — Riches, prosperity. From a medieval German name, and a feminine version of Otto.
- Ofelia Spanish — To help, a helper.
- Ofilia — To help, a helper.
- Ofra Hebrew — A fawn, or a lively maiden.
- Ofrah Hebrew — A fawn, or a lively maiden.
- Ohanna Armenian — God?s gracious gift
- Okalani Hawaiian — From Heaven.
- Okelani Hawaiian — from heaven
- Oksana Russian — glory be to God
Ola through Olya
- Ola Scandinavian — A descendant. The feminine form of Olaf.
- Olalla Spanish — The well-spoken one.
- Olathe Native American — Beautiful.
- Olayinka Yoruban — honors surround me
- Olba Aboriginal — Red ochre.
- Olcay Turkish
- Oleander Greek — An evergreen tree.
- Olena Ukrainian — The light of the sun. Also see Eileen, Elaine, Eleanor and Ellen.
- Olesia Polish — helper and defender of mankind
- Olethea Latin — Truth.
- Olga Russian — The holy one. The name of a 10th-century saint and the feminine form of Oleg.
- Oliana Hawaiian — oleander
- Olien Russian — The dear one.
- Olinda Latin — Fragrant.
- Olive — An Olive tree or branch. A symbol of peace. Feminine version of Oliver.
- Olivia Latin — An Olive tree or branch. A symbol of peace. Feminine version of Oliver.
- Olono Aboriginal — A hill.
- Olva — The holy one.
- Olwen Welsh — White or fair footprints. The name of a character in Welsh legend.
- Olya — The holy one.
Olympia through Ophrah
- Olympia Latin — The heavenly one. From the home of the Gods.
- Oma Arabic — Long-lived. The feminine form of Omar.
- Omaka Maori — The place where the stream flows.
- Omega Greek — The last.
- Ona Lithuanian — Grace, or favoured by God. Form of Anne. Also see Una.
- Onawa Native American — One who is wide-awake.
- Ondine Latin — A water sprite.
- Onenn Breton
- Onida Native American — The expected or awaited one.
- Onora Irish Gaelic — Version of Honour.
- Onur Turkish
- Onyx Greek — A semi-precious stone.
- Oola Aboriginal — A red lizard.
- Oona Irish — Also see Juno.
- Oonagh Irish — Also see Juno.
- Opal Sanskrit — A jewel, or precious stone.
- Opaline French — A jewel, or precious stone.
- Ophelia Greek — To help, a helper. A character in Shakespeare’s Hamlet.
- Ophira Greek — gold
- Ophrah Hebrew — A fawn, or a lively maiden.
Ora through Orlanda
- Ora Latin/Polynesian — Latin: Light, golden. Polynesian: Life. A boy or girl’s name.
- Oralee — Golden.
- Oralia — Golden.
- Oralie — Golden.
- Orana Aboriginal — The moon.
- Orane French — rising
- Orchid Latin — A flower name.
- Ordelia Teutonic — The spear of the elf.
- Orea Greek — The maid of the mountains.
- Orelia — Golden.
- Orenda Iroquois Indian — magic power
- Oriana Latin — To rise. An Italian name.
- Orianna Latin — golden, dawning
- Oriel — Golden.
- Orinda Teutonic — fire serpent
- Oriole Latin — A golden bird.
- Orissa — A state in eastern India.
- Orla Irish Gaelic — Golden. Form of Aurelia.
- Orlan Old English — From the pointed land. A boy or girl’s name.
- Orlanda Latin — bright sun
Orlantha through Ozora
- Orlantha Old German — from the land
- Orna Hebrew/Irish Gaelic — Hebrew: Light. Irish Gaelic: Pale.
- Ornella Italian — A flowering Ash tree.
- Orpah Hebrew — A fawn, or a lively maiden.
- Orsa — A female bear.
- Orseline — A female bear.
- Orsola — A female bear.
- Ortense Italian — The garden lover.
- Ortensia Italian — The garden lover.
- Orvokki — Finnish form of Violet.
- Ottavia Italian — The eighth.
- Ottilie — Riches, prosperity. From a medieval German name, and a feminine version of Otto.
- Ottoline — Riches, prosperity. From a medieval German name, and a feminine version of Otto.
- Ourania — Heavenly.
- Owena Welsh — Well-born. The feminine form of Owen.
- Ozora Hebrew — The strength of the Lord.
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