Girl names that start with O
These 71 O girl names run from Oakley to Özlem, each with its meaning and origin. The most popular in the US in 2025 were Olivia, Oaklynn and Oakley.
Órlaith
Golden ruler, from ór, gold, and flaith, ruler (Irish Gaelic). No. 14,486 in the US in 2025, 6 babies.
GirlIrish
Olympe
Of Olympus (Greek)
GirlFrench
Orli
Light for me (Hebrew). No. 5,665 in the US in 2025, 22 babies.
GirlHebrew
Odharnait
Little dun-colored one (Irish Gaelic)
GirlIrish
Olwen
White footprint (Welsh)
GirlWelsh
Ondina
Water sprite (Latin)
GirlSpanish
Ocean
The great sea (Greek). No. 720 in the US in 2025, 720 babies. Given to both: 48% girls.
UnisexEnglishRising
Ortrun
Point and secret lore (Germanic)
GirlGerman
Opeyemi
Gratitude suits me (Yoruba)
GirlAfrican
Oshrat
Happiness (Hebrew)
GirlHebrew
Ori
My light (Hebrew). No. 2,002 in the US in 2025, 107 babies. Given to both: 29% girls.
UnisexHebrew
Odile
Wealth, fortune (Germanic)
GirlFrench
Most popular girl names starting with O in 2025
Ranked by the number of US babies given each name. Each spelling is counted on its own.
| US rank | Name | Babies | 10-year trend | Meaning |
|---|---|---|---|---|
| #1 | Olivia | 13,544 | Rising | olive tree |
| #153 | Oaklynn | 1,964 | Rising | variant of Oaklyn, a blend of Oakley and lyn |
| #156 | Oakley | 1,933 | Rising | oak clearing |
| #197 | Olive | 1,597 | Steady | tree of peace |
| #264 | Ophelia | 1,183 | Rising | help, benefit |
| #308 | Octavia | 982 | Rising | eighth |
| #423 | Opal | 740 | Rising | precious stone |
| #535 | Oaklee | 565 | Steady | – |
| #637 | Oaklyn | 456 | Steady | – |
| #668 | Oakleigh | 423 | Steady | – |
| #787 | Ocean | 345 | Rising | the great sea |
| #883 | Odette | 303 | Rising | wealth, fortune |
Source: US Social Security Administration baby-name data, 2025. Trend compares the rank with ten years earlier.
O names by the numbers
How many US babies get a name starting with O, counted from Social Security records of names given to at least 5 babies.
Girls
- Share of girls, 2025
- 1.7%
- Place among 26 letters
- 19th
- Different O names
- 180
- In the top 1,000
- 12
Share of girls with an O name: 0.2% in 1950, 0.8% in 2000, and 1.7% in 2025.
O girl names used in many cultures
Names our database lists in the most languages and countries, easy to spell and say in several of them.
- Oliviaolive tree (Latin)
- Olympiaof Olympus (Greek)
- Ottiliewealth, fortune (Germanic)
- Olivetree of peace (Latin)
- Ondinawater sprite (Latin)
- Orlagolden ruler, from Órlaith: ór, gold, and flaith, ruler (Irish Gaelic)
- Oakleyoak clearing (Old English)
- Oaklynnvariant of Oaklyn, a blend of Oakley and lyn (English)
- Oceanthe great sea (Greek)
- Océanethe ocean (Greek)
- Octaviaeighth (Latin)
- Oddnypoint of a sword and new (Old Norse)
- OdeliaI will thank God (Hebrew)
- Odettewealth, fortune (Germanic)
- Odharnaitlittle dun-colored one (Irish Gaelic)
- Odilewealth, fortune (Germanic)
- Ofeliahelp (Greek)
- Ofrimy fawn (Hebrew)
Where these names come from
- Greek: 12
- Hebrew: 12
- Latin: 11
- Germanic: 6
- Irish Gaelic: 4
- Yoruba: 4
- Turkish: 4
- Old Norse: 3
All 71 girl names that start with O
| Name | Meaning | Origin | Gender |
|---|---|---|---|
| Oakley | oak clearing | Old English | Unisex |
| Oaklynn | variant of Oaklyn, a blend of Oakley and lyn | English | Girl |
| Ocean | the great sea | Greek | Unisex |
| Océane | the ocean | Greek | Girl |
| Octavia | eighth | Latin | Girl |
| Oddny | point of a sword and new | Old Norse | Girl |
| Odelia | I will thank God | Hebrew | Girl |
| Odette | wealth, fortune | Germanic | Girl |
| Odharnait | little dun-colored one | Irish Gaelic | Girl |
| Odile | wealth, fortune | Germanic | Girl |
| Ofelia | help | Greek | Girl |
| Ofri | my fawn | Hebrew | Unisex |
| Oksana | hospitality, a form of Ksenia | Greek | Girl |
| Oksun | jade and gentle (depends on hanja) | Korean | Girl |
| Oktyabrina | October, for the 1917 revolution | Russian | Girl |
| Okuhle | that which is beautiful or good | Zulu | Unisex |
| Ola | life, health | Hawaiian | Unisex |
| Olesya | pet form of Oleksandra | Greek | Girl |
| Olga | holy, blessed | Old Norse | Girl |
| Olibhia | olive tree | Latin | Girl |
| Olileanya | hope, expectation | Igbo | Unisex |
| Olimpia | of Olympus | Greek | Girl |
| Olive | tree of peace | Latin | Girl |
| Olivia | olive tree | Latin | Girl |
| Olívia | olive tree | Latin | Girl |
| Oliwia | olive tree | Latin | Girl |
| Oluwaseun | we thank God | Yoruba | Unisex |
| Oluwatoyin | God is worthy of praise | Yoruba | Girl |
| Olwen | white footprint | Welsh | Girl |
| Olya | short form of Olga, holy | Old Norse | Girl |
| Olympe | of Olympus | Greek | Girl |
| Olympia | of Olympus | Greek | Girl |
| Olympias | of Olympus | Greek | Girl |
| Ombeline | from a pet form of Humbert | Germanic | Girl |
| Omolara | a child is family | Yoruba | Girl |
| Ömür | life | Arabic | Unisex |
| Ona | wave | Catalan | Girl |
| Ondina | water sprite | Latin | Girl |
| Onóra | honor | Latin | Girl |
| Opal | precious stone | Sanskrit | Girl |
| Opeyemi | gratitude suits me | Yoruba | Girl |
| Ophelia | help, benefit | Greek | Girl |
| Ophélie | help | Greek | Girl |
| Or | light | Hebrew | Unisex |
| Ora | light | Hebrew | Girl |
| Ori | my light | Hebrew | Unisex |
| Orit | light | Hebrew | Girl |
| Orla | golden ruler, from Órlaith: ór, gold, and flaith, ruler | Irish Gaelic | Girl |
| Órlaith | golden ruler, from ór, gold, and flaith, ruler | Irish Gaelic | Girl |
| Orli | light for me | Hebrew | Girl |
| Orly | light is mine | Hebrew | Girl |
| Orna | little dun-colored one | Irish Gaelic | Girl |
| Ornella | flowering ash tree | Italian | Girl |
| Oro | gold | Ladino | Girl |
| Orovida | golden life | Ladino | Girl |
| Orpah | back of the neck | Hebrew | Girl |
| Orsola | little bear | Latin | Girl |
| Ortal | light and dew | Hebrew | Girl |
| Ortrud | point and strength | Germanic | Girl |
| Ortrun | point and secret lore | Germanic | Girl |
| Osher | happiness | Hebrew | Unisex |
| Oshrat | happiness | Hebrew | Girl |
| Osnat | belonging to the goddess Neith | Ancient Egyptian | Girl |
| Otávia | eighth | Latin | Girl |
| Ottavia | the eighth | Latin | Girl |
| Ottilie | wealth, fortune | Germanic | Girl |
| Ourania | heavenly one | Greek | Girl |
| Öykü | story | Turkish | Girl |
| Özge | other, different | Turkish | Girl |
| Özgür | free | Turkish | Unisex |
| Özlem | longing, yearning | Turkish | Girl |
Frequently asked questions
What are the most popular girl names that start with O?
The most popular girl names starting with O in the US are Olivia (#1), Oaklynn (#153), Oakley (#156), Olive (#197), Ophelia (#264), according to US Social Security Administration data for 2025.
How many girl names start with O?
In 2025, 180 different girl names starting with O were given to at least 5 US babies each, and 12 of them were in the top 1,000. This page lists 71 with their meaning and origin.
How common are girl names that start with O?
1.7% of US girls born in 2025 have a name starting with O, making it the 19th most common first letter. In 1950 it was 0.2%.
Where do girl names starting with O come from?
The most common origins on this list are Greek (12), Hebrew (12), Latin (11).