Boys Names Beginning With O

A very long list of boys names beginning with the letter O. I hope it comes in handy.
  1. Oak
    • Origin:

      English tree name
    • Meaning:

      "tree from the genus Quercus"
    • Description:

      Oak, a symbol of solidity, strength, and longevity, is joining Cedar and Pine as a viable name, one that would work especially well in the middle.
  2. Oakley
    • Origin:

      English
    • Meaning:

      "oak wood or clearing"
    • Description:

      As sturdy as Oak, with deeper roots. It's been on the rise for both boys and girls in recent years, with the name comfortably in the top 500 for boys and nearing the Top 100 for girls.
  3. Oaks
    • Origin:

      English
    • Meaning:

      "oak tree"
    • Description:

      A cool, nature-inspired surname for someone who lived near an oak tree or in an oak wood, also spelled Oakes.
  4. Oberon
    • Origin:

      Variation of Auberon
    • Meaning:

      "noble, bearlike"
    • Description:

      The Shakespearean character Oberon in A Midsummer Night's Dream is King of the Fairies, but the name, with its strong 'O' beginning, projects a far more virile image than that.
  5. Obsidian
    • Origin:

      English word name
    • Description:

      This rarely used boys name is one of the few gem names for a boy. Obsidian is actually a type of volcanic glass, formed when lava cools very quickly. This ultra-cool name might spark a love of volcanoes and geology in a little boy.
  6. Octavian
    • Origin:

      Latin
    • Meaning:

      "eighth"
    • Description:

      With the rise of ancient Roman names, Octavian suddenly seem plausible again. A variation of Octavius and relative of the more modern Octavio, it's an equally attractive member of the trio.
  7. Octavius
    • Origin:

      Latin
    • Meaning:

      "eighth"
    • Description:

      Octavius, which was at one time used for the eighth child in a family, has the worn leather patina of all the ancient Roman names now up for reconsideration. As a Roman family name, it derives from the uncommon forename Octavus, which designated an eighth son.
  8. Odysseus
    • Origin:

      Greek mythology name
    • Meaning:

      "wrathful"
    • Description:

      The name of the brave, resourceful hero of Homer's epic saga has almost always been considered too weighty for a child to bear, but at this point, some brave, resourceful parents out there might be willing to take it on.
  9. Oliver
    • Origin:

      Latin
    • Meaning:

      "olive tree or elf army"
    • Description:

      Oliver is an international star, ranking near the top of the charts in the US and throughout the English-speaking world, along with a host of European and Latin American countries, from Norway to Chile, Slovenia to Switzerland.
  10. Optimus
    • Origin:

      Latin
    • Meaning:

      "best"
    • Description:

      Extremely rare, but seen as a baby boy name every once in a while, influenced by Transformers character Optimus Prime.
  11. Orchard
    • Origin:

      English from Latin
    • Meaning:

      "garden yard"
  12. Orel
    • Origin:

      Hebrew
    • Meaning:

      "light of God"
    • Description:

      Unisex name in Israel, ideal for a Hanukkah baby.
  13. Oren
    • Origin:

      Hebrew
    • Meaning:

      "laurel or pine tree"
    • Description:

      Soft and sensitive name often heard in Israel.
  14. Orev
    • Origin:

      Hebrew
    • Meaning:

      "raven"
    • Description:

      Idiosyncratic Hebrew choice.
  15. Oriole
    • Origin:

      Latin
    • Meaning:

      "golden"
    • Description:

      A bird name from the same Latin root as Aurelio.
  16. Orson
    • Origin:

      Latin and English
    • Meaning:

      "bear cub"
    • Description:

      Orson has had in the past a rotund teddy-bear image, a la Orson Welles, who early on dropped his common given name of George in favor of his more distinctive middle one, and who seemed to own it during his lifetime. No longer a single-person signature, it's now an interesting possibility for any parent seeking an unusual yet solid name. It's started to appear to the celeb set--both Paz Vega and Lauren Ambrose have little Orsons.
  17. Ortega
    • Origin:

      Spanish name
    • Meaning:

      "dweller at the sign of the grouse"
    • Description:

      Dashing Latin surname name -- but also a well-known brand of Spanish packaged foods.
  18. Oscar
    • Origin:

      English or Irish
    • Meaning:

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

      Oscar is one of the most stylish Old Man Names of our era. While it's softened slightly in popularity over the past 20 years, that may be considered a very good thing.
  19. Oskar
    • Origin:

      German variation of Oscar
    • Description:

      Oskar is to Oscar as Jakob is to Jacob: more distinctive and continental.
  20. Otto
    • Origin:

      German
    • Meaning:

      "wealthy"
    • Description:

      Otto is cool again. Long a quintessential Old Man Name, Otto has been promoted to trending darling of adventurous baby namers.