246 Unisex Names That Start With O (With Meanings and Popularity)
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About this list
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.
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The names
Oliver
Germanic, Latin
"elf army; ancestor's relic; olive tree"
Olivia
Latin
"olive tree"
Oscar
English or Irish
"God spear, or deer-lover or champion warrior"
Otto
German
"wealthy"
Owen
Welsh
"young warrior; well-born"
Orion
Greek
"boundary, limit"
Ophelia
Greek
"help"
Olive
English, from Latin, nature name
"olive tree"
Otis
Variation of Otto, German
"wealthy"
Orla
Irish
"golden princess"
Octavia
Latin
"eighth"
Odessa
Russian form of Odesa, Ukrainian place-name
"voyage"
Opal
Sanskrit
"gem"
Oakley
English
"oak wood or clearing"
Onyx
Word name
"gem stone; claw, nail"
Orin
Variation of Oren or Oran, Hebrew, Irish, Scottish
"laurel, light, song, little green one"
Osiris
Egyptian
"with strong eyesight"
Oren
Hebrew
"laurel or pine tree"
Orlando
Italian variation of Roland
"famous throughout the land"
Ozzy
Pet form of Oswald, Osborn, Osmond or Oscar, English
"divine; deer"