243 Unisex Names That Start With O (With Meanings and Popularity)
Updated Fri Jan 30 2026
Share
Copy link
Unisex names that start with O are flying high in the style stakes right now, with other O-starting choices like Oliver and Olivia, Owen and Oaklynn at an all-time high.
Two up-and-coming unisex O names, Oakley and Ocean, rank among the most popular unisex names to achieve an almost-equal gender split, making either one an awesome androgynous choice.
Here, our full selection of unisex names that start with O, ordered by their current popularity on Nameberry. Each name is used more often for the gender indicated by its heart.
RELATED:
- Oliver
Origin:
Germanic, LatinMeaning:
"elf army; ancestor's relic; olive tree"
- Olivia
Origin:
LatinMeaning:
"olive tree"
- Owen
Origin:
WelshMeaning:
"young warrior; well-born"
- Otto
Origin:
GermanMeaning:
"wealthy"
- Oscar
Origin:
English or IrishMeaning:
"God spear, or deer-lover or champion warrior"
- Ophelia
Origin:
GreekMeaning:
"help"
- Orion
Origin:
GreekMeaning:
"boundary, limit"
- Otis
Origin:
Variation of Otto, GermanMeaning:
"wealthy"
- Opha
Origin:
Greek, HebrewMeaning:
"help; fawn"
- Olive
Origin:
English, from Latin, nature nameMeaning:
"olive tree"
- Orla
Origin:
IrishMeaning:
"golden princess"
- Opal
Origin:
SanskritMeaning:
"gem"
- Octavia
Origin:
LatinMeaning:
"eighth"
- Odessa
Origin:
Russian form of Odesa, Ukrainian place-nameMeaning:
"voyage"
- Ozzy
Origin:
Pet form of Oswald, Osborn, Osmond or Oscar, EnglishMeaning:
"divine; deer"
- Orlando
Origin:
Italian variation of RolandMeaning:
"famous throughout the land"
- Oakley
Origin:
EnglishMeaning:
"oak wood or clearing"
- Oberon
Origin:
Variation of AuberonMeaning:
"elf king; noble bear"
- Oren
Origin:
HebrewMeaning:
"laurel or pine tree"
- Orin
Origin:
Variation of Oren or Oran, Hebrew, Irish, ScottishMeaning:
"laurel, light, song, little green one"
The Nameberry App Is Live
Find your perfect baby name together in our iPhone app, now available on the App Store.
- Swipe through thousands of names with your partner
- Names you match on are saved to your shared list
- Get personalized recommendations that learn based on your and your partner's preferences
- Partner with friends and family to find names you all love
- Backed by Nameberry's 20 years of data around name preferences.
