549 Boy Names That Start With O (with Meanings and Popularity)
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About this list
Boy names that start with O are on the way up, with old-timer Oliver and on-trend Owen leading the charge.
In Britain, the O initial is out on top for both boys and girls at the moment, with Olivia atop the girls' list and Oliver joined near the top of the boys' chart by amiable Oscar. Along with Oliver and Owen, other O names for boys in the US Top 500 include Oscar, Omar, Orion, Odin, Oakley, and Omari.
It's true that on the whole, we prefer our o's at the end of boys' names (as in popular Berry favorites Milo, Leo, and Hugo), but who's to say that you can't have both? Otto, Orlando, and Othello all rank in the Top 1000 baby names here on Nameberry... or how about Oslo, Orsino, or Octavio?
Original O names for boys trending now include Otis, Ozias, and Oakes.
Here, our full selection of boy names that start with O, ordered by their current popularity on Nameberry.
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The names
Oliver
Germanic, Latin
"elf army; ancestor's relic; olive tree"
Oscar
English or Irish
"God spear, or deer-lover or champion warrior"
Owen
Welsh
"young warrior; well-born"
Otto
German
"wealthy"
Ozias
Greek, Hebrew
"my strength is God"
Orion
Greek
"boundary, limit"
Otis
Variation of Otto, German
"wealthy"
Oakley
English
"oak wood or clearing"
Orin
Variation of Oren or Oran, Hebrew, Irish, Scottish
"laurel, light, song, little green one"
Orson
Latin and English
"bear cub"
Odin
Variation of Óðinn, Old Norse
"god of frenzy; poetic fury"
Osiris
Egyptian
"with strong eyesight"
Ozzy
Pet form of Oswald, Osborn, Osmond or Oscar, English
"divine; deer"
Ohm
Word name or spelling variation of Om, Sanskrit
"creation"
Oren
Hebrew
"laurel or pine tree"
Orpheus
Greek mythology name
"the darkness of the night"
Onyx
Word name
"gem stone; claw, nail"
Oran
Hebrew, Irish, Scottish
"light, song, little green one"
Ocean
English, nature name
"ocean"
Orlando
Italian variation of Roland
"famous throughout the land"
