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Boy Names Starting With O

Boy Names Starting With O

Boy names starting 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, other O names for boys in the US Top 300 include Owen, Oscar, Omar, and Orion.

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?

Browse our full collection of boy names beginning with O here. The top names below rank among the current US Top 1000 Baby Names and are ordered by popularity. Unique names rank below the Top 1000 and are listed alphabetically.

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OscarHeart

  • Origin:

    English or Irish
  • Meaning:

    "God spear, or deer-lover or champion warrior"
  • Description:

    Oscar has Irish and Norse roots—Norse Oscar comes from the Old English Osgar, a variation of the Old Norse name Ásgeirr. The Irish form was derived from the Gaelic elements os, meaning “deer,” and car, “loving.” In Irish legend, Oscar was one of the mightiest warriors of his generation, the son of Ossian and the grandson of Finn Mac Cumhaill (MacCool).

OliverHeart

  • Origin:

    Germanic
  • Meaning:

    "olive tree"
  • Description:

    Oliver derives from Olivier, the Norman French variation of the Ancient Germanic name Alfihar ("elf army") or the Old Norse Áleifr ("ancestor's relic"), from which comes Olaf. Olivier emerged as the dominant spelling for its associations with the Latin word oliva, meaning "olive tree." Oliver was used as a given name in medieval England after the spread of the French epic poem ‘La Chanson de Roland,’ which features a character named Olivier.

OttoHeart

  • Origin:

    German
  • Meaning:

    "wealthy"
  • Description:

    Cutting-edge parents have revived this German name a la Oscar.

OtisHeart

  • Origin:

    German
  • Meaning:

    "wealthy"
  • Description:

    Otis has a double image: it's cool and bluesy a la Otis Redding, but also an upscale, high-society name of the past. Otis has real appeal for parents attracted to its catchy O initial and combination of strength and spunk.

OwenHeart

  • Origin:

    Welsh
  • Meaning:

    "young warrior; well-born"
  • Description:

    Owen was derived from two names—the Welsh Owain and the Celtic Eoghan. Each are connected to Eugene, which ultimately came from the Greek word eugenes, comprised of the elements eu, meaning good, and genes, “born.” Owen became a Welsh patronymic surname during the Renaissance. The legendary St. Owen was a Benedictine monk who was a follower of St. Chad.
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OrionHeart

  • Origin:

    Greek mythology name
  • Description:

    Orion is a rising star, with both mythical and celestial overtones.

OdinHeart

  • Origin:

    Variation of Óðinn, Old Norse
  • Meaning:

    "god of frenzy; poetic fury"
  • Description:

    Odin is the name of the supreme Norse god of art, culture, wisdom, and law — who was handsome, charming, and eloquent into the bargain. The name projects a good measure of strength and power and has excellent assimilation potential.

OnyxHeart

  • Origin:

    Gem name
  • Description:

    Unlike Pearl and Ruby, this is one gem name suited for boys, the final x making it sound strong and virile. Musician Iggy Azalea chose the name Onyx for her son.

OsirisHeart

  • Origin:

    Egyptian
  • Meaning:

    "with strong eyesight"
  • Description:

    Osiris is the name of Egyptian mythology god-king who died and was reborn every year. Emerging from centuries of obscurity, Osiris has several ingredients for success in the modern world: Roots in ancient myth, an uplifting meaning, an s ending and the cute nickname Os or Oz.

OrlandoHeart

  • Origin:

    Italian variation of Roland
  • Meaning:

    "famous throughout the land"
  • Description:

    Orlando, the ornate Italianate twist on the dated Roland, with a literary heritage stretching back to Shakespeare and before, has appealing book-ended o's, and is open to combination with almost any last name, a la British actor, Orlando Bloom.
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OakleyHeart

  • Origin:

    English
  • Meaning:

    "oak wood or clearing"
  • Description:

    As sturdy as Oak, with deeper roots. For males, it's been on the rise in recent years.

OceanHeart

  • Origin:

    Nature name
  • Description:

    Nature names like Ocean and River are flowing back into favor, especially with nature lovers and green-oriented parents.

OmarHeart

  • Origin:

    Arabic, Hebrew
  • Meaning:

    "flourishing, thriving; eloquent"
  • Description:

    Omar has a perfect mix of unusuality and familiarity, with the added plus of a strong, open initial O. Commonly used among Muslim families, Omar was long associated with twelfth-century Persian poet Omar Khayyam, though it sounds anything but ancient now.

    More recent well-known bearers have been World War II General Omar Bradley and actors Omar Sharif(born Michael) and Omar Epps.

OmariHeart

  • Origin:

    Swahili, Arabic
  • Meaning:

    "populous, flourishing"
  • Description:

    This name, like Omar and Amari, has been in the US Top 1000 for many years. After taking a downturn in 2008, it's now again on the upswing. Actor Omari Hardwick keeps it in the public eye.