Baby Girl Names That Start With O
O-names open on a round, resonant vowel that modern parents clearly love: Olivia and Oliver have both topped recent US charts. The section is compact, led by Latin roots (Olivia, Octavia) with Irish and Hebrew entries such as Owen and Obadiah rounding it out. This page narrows the letter to 145 girl names, where American, English and Latin origins run strongest. Olivia (No. 1) and Oaklynn (No. 153) are the most popular O girl names in the 2025 U.S. Social Security rankings.
Browse Baby Girl Names Beginning With O
This page narrows the O list to baby girl names with meanings and origins. For a fresh batch, open the girl name generator preset for O. You can also compare the broader baby names that start with O, switch to baby boy names that start with O, or move to baby girl names that start with N and baby girl names that start with P.
Baby Girl Names That Start With O List
145 curated ideas with quick meanings or usage notes.
#1
Olivia
Meaning: Olive tree
Origin: Latin
#2
Olive
Meaning: Olive tree
Origin: Latin
#3
Orla
Meaning: Golden princess
Origin: Irish
#4
Ottilie
Meaning: Prosperous in battle
Origin: Germanic
#5
Ophelia
Meaning: Help, benefit
Origin: Greek
#6
Ocean
Meaning: Ocean, sea
Origin: English word name
#7
Octavia
Meaning: Eighth
Origin: Latin
#8
Opal
Meaning: Gemstone
Origin: Sanskrit
#9
Orlaith
Meaning: Popular England and Wales given name
Origin: English usage
#10
Oakley
Meaning: Oak clearing
Origin: English
#11
Oliwia
Meaning: Popular England and Wales given name
Origin: English usage
#12
Olivia-Rose
Meaning: Popular England and Wales given name
Origin: English usage
#13
Oluwadarasimi
Meaning: Popular England and Wales given name
Origin: English usage
#14
Odette
Meaning: Wealth or fortune
Origin: French
#15
Oriana
Meaning: Dawn or golden
Origin: Latin
#16
Ottie
Meaning: Popular England and Wales given name
Origin: English usage
#17
Orlagh
Meaning: Popular England and Wales given name
Origin: English usage
#18
Oona
Meaning: Popular England and Wales given name
Origin: English usage
#19
Olympia
Meaning: From Mount Olympus
Origin: Greek
#20
Olivia-Mae
Meaning: Popular England and Wales given name
Origin: English usage
#21
Ohemaa
Meaning: Popular England and Wales given name
Origin: English usage
#22
Ophelia-Rose
Meaning: Popular England and Wales given name
Origin: English usage
#23
Ottillie
Meaning: Popular England and Wales given name
Origin: English usage
#24
Olaedo
Meaning: Popular England and Wales given name
Origin: English usage
#25
Ola
Meaning: Popular England and Wales given name
Origin: English usage
#26
Oakleigh
Meaning: Oak clearing or oak meadow
Origin: English surname / modern English
#27
Olwen
Meaning: White footprint
Origin: Welsh
#28
Otilia
Meaning: Popular England and Wales given name
Origin: English usage
#29
Oluwashindara
Meaning: Popular England and Wales given name
Origin: English usage
#30
Oceana
Meaning: Popular England and Wales given name
Origin: English usage
#31
Ocie
Meaning: Popular England and Wales given name
Origin: English usage
#32
Olanna
Meaning: Popular England and Wales given name
Origin: English usage
#33
Oonagh
Meaning: Popular England and Wales given name
Origin: English usage
#34
Olivia-May
Meaning: Popular England and Wales given name
Origin: English usage
#35
Oluwanifemi
Meaning: Popular England and Wales given name
Origin: English usage
#36
Onyinyechi
Meaning: Popular England and Wales given name
Origin: English usage
#37
Oluwatamilore
Meaning: Popular England and Wales given name
Origin: English usage
#38
Ona
Meaning: Popular England and Wales given name
Origin: English usage
#39
Ottilia
Meaning: Popular England and Wales given name
Origin: English usage
#40
Olivia-Grace
Meaning: Popular England and Wales given name
Origin: English usage
#41
Oluwadamilola
Meaning: Popular England and Wales given name
Origin: English usage
#42
Oluwalonimi
Meaning: Popular England and Wales given name
Origin: English usage
#43
Ohana
Meaning: Popular England and Wales given name
Origin: English usage
#44
Oluwademilade
Meaning: Popular England and Wales given name
Origin: English usage
#45
Oreoluwa
Meaning: Popular England and Wales given name
Origin: English usage
#46
Orla-Rose
Meaning: Popular England and Wales given name
Origin: English usage
#47
Olimpia
Meaning: Popular England and Wales given name
Origin: English usage
#48
Oluwafifehanmi
Meaning: Popular England and Wales given name
Origin: English usage
#49
Oluwatise
Meaning: Popular England and Wales given name
Origin: English usage
#50
Orla-Rae
Meaning: Popular England and Wales given name
Origin: English usage
#51
Olga
Meaning: Popular U.S. given name
Origin: American usage
#52
Odalys
Meaning: Popular U.S. given name
Origin: American usage
#53
Odalis
Meaning: Popular U.S. given name
Origin: American usage
#54
Ofelia
Meaning: Popular U.S. given name
Origin: American usage
#55
Olyvia
Meaning: Popular U.S. given name
Origin: American usage
#56
Odessa
Meaning: Long journey or from Odessa
Origin: Greek / place name
#57
Orianna
Meaning: Popular U.S. given name
Origin: American usage
#58
Oaklee
Meaning: Oak clearing
Origin: Modern English
#59
Oralia
Meaning: Popular U.S. given name
Origin: American usage
#60
Oliva
Meaning: Popular U.S. given name
Origin: American usage
#61
Ora
Meaning: Light or prayer
Origin: Hebrew / Latin
#62
Osiris
Meaning: Popular U.S. given name
Origin: American usage
#63
Ollie
Meaning: Olive tree or ancestor descendant
Origin: English / Latin / Norse
#64
Oksana
Meaning: Popular U.S. given name
Origin: American usage
#65
October
Meaning: Popular U.S. given name
Origin: American usage
#66
Oliviah
Meaning: Popular U.S. given name
Origin: American usage
#67
Orly
Meaning: Popular U.S. given name
Origin: American usage
#68
Onyx
Meaning: Black gemstone
Origin: Greek
#69
Olivea
Meaning: Popular U.S. given name
Origin: American usage
#70
Ondrea
Meaning: Popular U.S. given name
Origin: American usage
#71
Odyssey
Meaning: Popular U.S. given name
Origin: American usage
#72
Odelia
Meaning: Popular U.S. given name
Origin: American usage
#73
Omega
Meaning: Popular U.S. given name
Origin: American usage
#74
Oumou
Meaning: Popular U.S. given name
Origin: American usage
#75
Onika
Meaning: Popular U.S. given name
Origin: American usage
#76
Oneida
Meaning: Popular U.S. given name
Origin: American usage
#77
Oscar
Meaning: Divine spear
Origin: Gaelic
#78
Onna
Meaning: Popular U.S. given name
Origin: American usage
#79
Omayra
Meaning: Popular U.S. given name
Origin: American usage
#80
Oceanna
Meaning: Popular U.S. given name
Origin: American usage
#81
Orion
Meaning: Rising in the sky
Origin: Greek
#82
Owen
Meaning: Well-born or young warrior
Origin: Welsh
#83
Omar
Meaning: Flourishing, long-lived
Origin: Arabic
#84
Oaklyn
Meaning: Oak and Lynn compound; oak lake or oak waterfall imagery
Origin: Modern English
#85
Odell
Meaning: English surname from a place name; commonly interpreted as woad hill
Origin: English surname / place name
#86
Odetta
Meaning: Wealth or fortune
Origin: Germanic / English usage
#87
Opaline
Meaning: Opal-like; gemstone name
Origin: English word name
#88
Oralee
Meaning: English usage name; meaning uncertain
Origin: English usage
#89
Oralie
Meaning: English usage name; meaning uncertain
Origin: English usage
#90
Orinda
Meaning: Literary English usage name; meaning uncertain
Origin: English literary usage
#91
Orpha
Meaning: Back of the neck or fawn, depending on interpretation
Origin: Hebrew / English usage
#92
Ottoline
Meaning: Wealth or fortune
Origin: Germanic / English usage
#93
Oanh
Meaning: Oriole bird
Origin: Vietnamese
#94
Orathai
Meaning: beautiful heart
Origin: Thai
#95
Oaklynn
Meaning: Oak lake or oak woodland
Origin: Modern English
#96
Oaklie
Meaning: Distinctive U.S. given name
Origin: American usage
#97
Oliviana
Meaning: Distinctive U.S. given name
Origin: American usage
#98
Onalee
Meaning: Distinctive U.S. given name
Origin: American usage
#99
Olivianna
Meaning: Distinctive U.S. given name
Origin: American usage
#100
Orli
Meaning: My light
Origin: Hebrew
#101
Oliver
Meaning: Olive tree
Origin: Latin / French
#102
Oliviagrace
Meaning: Distinctive U.S. given name
Origin: American usage
#103
Oliviarose
Meaning: Distinctive U.S. given name
Origin: American usage
#104
Oriyah
Meaning: Distinctive U.S. given name
Origin: American usage
#105
Osinachi
Meaning: Distinctive U.S. given name
Origin: American usage
#106
Olina
Meaning: Distinctive U.S. given name
Origin: American usage
#107
Olamide
Meaning: Distinctive U.S. given name
Origin: American usage
#108
Ori
Meaning: Distinctive U.S. given name
Origin: American usage
#109
Oluwasemilore
Meaning: Distinctive U.S. given name
Origin: American usage
#110
Olena
Meaning: Distinctive U.S. given name
Origin: American usage
#111
Oluwatoni
Meaning: Distinctive U.S. given name
Origin: American usage
#112
Ondine
Meaning: Distinctive U.S. given name
Origin: American usage
#113
Oswin
Meaning: Distinctive U.S. given name
Origin: American usage
#114
Olivya
Meaning: Distinctive U.S. given name
Origin: American usage
#115
Omari
Meaning: Distinctive U.S. given name
Origin: American usage
#116
Oriah
Meaning: Distinctive U.S. given name
Origin: American usage
#117
Onesty
Meaning: Distinctive U.S. given name
Origin: American usage
#118
Olyviah
Meaning: Distinctive U.S. given name
Origin: American usage
#119
Odilia
Meaning: Distinctive U.S. given name
Origin: American usage
#120
Onora
Meaning: Distinctive U.S. given name
Origin: American usage
#121
Omotara
Meaning: Distinctive U.S. given name
Origin: American usage
#122
Oceane
Meaning: Distinctive U.S. given name
Origin: American usage
#123
Oyinkansola
Meaning: Distinctive U.S. given name
Origin: American usage
#124
Onnika
Meaning: Distinctive U.S. given name
Origin: American usage
#125
Oluwatofunmi
Meaning: Distinctive U.S. given name
Origin: American usage
#126
Olivine
Meaning: Distinctive U.S. given name
Origin: American usage
#127
Oluwatishe
Meaning: Distinctive U.S. given name
Origin: American usage
#128
Omni
Meaning: Distinctive U.S. given name
Origin: American usage
#129
Onica
Meaning: Distinctive U.S. given name
Origin: American usage
#130
Oasis
Meaning: Distinctive U.S. given name
Origin: American usage
#131
Oni
Meaning: Distinctive U.S. given name
Origin: American usage
#132
Oliana
Meaning: Distinctive U.S. given name
Origin: American usage
#133
Oluwabukunmi
Meaning: Distinctive U.S. given name
Origin: American usage
#134
Oluwafikayomi
Meaning: Distinctive U.S. given name
Origin: American usage
#135
Oluchi
Meaning: Distinctive U.S. given name
Origin: American usage
#136
Omara
Meaning: Distinctive U.S. given name
Origin: American usage
#137
Orchid
Meaning: Distinctive U.S. given name
Origin: American usage
#138
Ohanna
Meaning: Distinctive U.S. given name
Origin: American usage
#139
Omnia
Meaning: Distinctive U.S. given name
Origin: American usage
#140
Oniyah
Meaning: Distinctive U.S. given name
Origin: American usage
#141
Oceania
Meaning: Distinctive U.S. given name
Origin: American usage
#142
Onyinye
Meaning: Distinctive U.S. given name
Origin: American usage
#143
Oaklei
Meaning: Distinctive U.S. given name
Origin: American usage
#144
Owynn
Meaning: Distinctive U.S. given name
Origin: American usage
#145
Ovidia
Meaning: Of the Ovidius family
Origin: Latin
How To Use This O Baby Names List
Use the list above as a research set, then narrow it by sound, meaning, origin, and how the name pairs with the family name. The generator preset is useful for quick discovery, while this page is better for comparing a larger fixed set of O names.
Gender Mix
This focused page currently includes 145 baby girl names beginning with O. For a wider comparison, browse the full baby names that start with O list.
Sound And Flow
Say each name with the surname and listen for repeated sounds, awkward initials, and rhythm. Short O names can feel direct, while longer names may offer more nickname options.
Generate More
For a fresh shortlist using the same starting letter, open the girl name generator preset for O, then save the names worth comparing.
O Name Snapshot
This snapshot is calculated from the names on this page, so it changes with the actual O shortlist rather than using generic baby-name advice.
Length Mix
Short names
18
Compact names that can pair well with longer surnames or double-barrel middle names.
Examples: Orla, Opal, Oona, Ola, Ocie, Ona.
Medium names
95
Balanced names with enough sound to feel complete while still staying easy to say.
Examples: Olivia, Olive, Ottilie, Ophelia, Ocean, Octavia.
Long names
32
Longer names that often bring formal style, rhythm, and nickname options.
Examples: Olivia-Rose, Oluwadarasimi, Olivia-Mae, Ophelia-Rose, Ottillie, Oakleigh.
Common Endings
Ending sounds affect flow with the surname and can make names feel softer, sharper, brighter, or more traditional.
Ends in A
58
Examples: Olivia, Orla, Ophelia, Octavia, Oliwia, Oriana.
Ends in E
32
Examples: Olive, Ottilie, Olivia-Rose, Odette, Ottie, Olivia-Mae.
Ends in I
18
Examples: Oluwadarasimi, Oluwanifemi, Onyinyechi, Oluwalonimi, Oluwafifehanmi, Orathai.
Ends in H
10
Examples: Orlaith, Orlagh, Oakleigh, Oonagh, Oliviah, Oanh.
Popular O Baby Names In U.S. SSA 2025 Data
These are the highest-count O names in the U.S. SSA 2025 baby-name data. Treat this as a U.S. popularity signal, then use the full list above for meanings, origins, and a wider mix of styles.
Girl names
- Olivia rank #1 - 13,544 births
- Oaklynn rank #153 - 1,964 births
- Oakley rank #156 - 1,933 births
- Olive rank #197 - 1,597 births
- Ophelia rank #264 - 1,183 births
Source: U.S. Social Security Administration national baby name data, 2025. SSA public files include names with at least five births in a year; non-name records are excluded from this editorial summary.
Useful Styles In This List
Popular and familiar
Recognisable names that are useful when you want the shortlist to feel familiar rather than experimental.
Examples: Olivia, Olive, Orla, Ottilie, Ophelia, Ocean, Octavia, Opal.
Classic
Longer-lasting names that tend to work beyond one naming trend or birth year.
Examples: Olivia, Olive, Ottilie, Ophelia, Octavia, Odette, Olympia, Ollie.
Modern
Contemporary-feeling names, shorter forms, and names that fit current baby-name browsing habits.
Examples: Ocean, Oakleigh, Olga, Odalys, Odalis, Ofelia, Olyvia, Orianna.
Nature
Names connected with plants, seasons, sky, water, animals, landscape, or natural imagery.
Examples: Olive, Ocean, Opal, Oakley, Oriana, Oakleigh, Oaklee, Onyx.
Distinctive
Less expected choices that may suit parents looking beyond the most familiar shortlist.
Examples: Odessa, Onyx, Oaklynn, Oaklie, Oliviana, Onalee, Olivianna, Orli.
How To Use This List
Use the entries as a starting point for characters, projects, profiles, quizzes, team names, stories, or naming research. The short explanations help the joke land without turning the page into a dictionary.
If you need a fresh set of ideas after browsing, the related generator can create more names you can copy, save, or refine with filters.
Generate more
Want more ideas like these?
Browse the list first, then use the related generator when you want a fresh batch to compare, copy, or save. For broader discovery, start with the main name generator and then narrow the results with a focused list like this one.
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