Best Boy Names Ending in O

  1. Orlando
    • 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.
  2. Bruno
    • Origin:

      Germanic
    • Meaning:

      "brown"
    • Description:

      Tough-yet-cuddly Bruno is an international name even in its origins: it derives from the Germanic word for "brown" plus a Latin ending, and was borrowed as a color word in many European languages.
  3. Jethro
    • Origin:

      Hebrew
    • Meaning:

      "excellence"
    • Description:

      Jethro, though the biblical father-in-law of Moses, has suffered for a long time from a Beverly Hillbilly image, but some really adventurous parents might consider updating and urbanizing it and transitioning it into the hip o-ending category.
  4. Viggo
    • Origin:

      Scandinavian
    • Meaning:

      "war"
    • Description:

      Though to most Americans Viggo is a one-person name attached to intense actor Mortensen, it is actually an old Norse name dating back to the Vikings, and is currently the 32nd most popular appellation in Sweden. Viggo Mortensen is a Jr., sharing his name with his Danish father.
  5. Emilio
    • Origin:

      Spanish and Italian variation of Emil
    • Meaning:

      "rival"
    • Description:

      Dashing and suave, with a hint of poetry and gentleness, Emilio is an appealing and international choice. A solid favorite in Italy, it is also on the rise in the US, France, Austria, and the UK.
  6. Bo
    • Origin:

      Norse nickname
    • Meaning:

      "to live"
    • Description:

      A popular name in Denmark, in this country Bo has some cowboy swagger and a lot of substance in its minimal two letters. In Mandarin Chinese, Bo means "wave".
  7. Leonardo
    • Origin:

      Italian and Spanish variation of Leonard, German
    • Meaning:

      "brave lion"
    • Description:

      For centuries this name was associated primarily with the towering figure of Italian Renaissance painter-scientist-inventor Leonardo da Vinci, and was scarcely used outside the Latin culture.
  8. Kylo
    • Origin:

      Variation of Kyle, Scottish
    • Meaning:

      "narrow spit of land"
    • Description:

      The original Kyle has sparked many variations, including Kylie, Kyler, and Kylo, after Kylo Ren, the villain played by Adam Driver in the seventh Star Wars movie, released in December 2015.
  9. Jago
    • Origin:

      Spanish and Cornish variation of Jacob
    • Meaning:

      "supplanter"
    • Description:

      Jago is a dashing alternative to overused favorite Jacob.
  10. Jericho
    • Origin:

      Biblical place-name
    • Description:

      A biblical place name with trumpeting verve and strength.
  11. Aurelio
    • Origin:

      Italian; Spanish, variation of Aurelius
    • Meaning:

      "the golden one"
    • Description:

      Aurelio is an energetic Italian name rarely heard in the US, with an attractive aura. As the female version Aurelia gains greater notice, we expect to hear more from Aurelio too. In fact, Aurelio has recently entered the Top 1000 in the US in 2022. Next to follow might be latinate versions Aurelius and Aurelian.
  12. Cato
    • Origin:

      Latin
    • Meaning:

      "all-knowing"
    • Description:

      Cato conjures up images of ancient Roman statesmen and southern antebellum retainers; it could have revival potential, with its 'O' ending and the current interest in the names of Greek and Roman antiquity.
  13. Echo
    • Origin:

      Greek mythology name
    • Meaning:

      "echo or sound"
    • Description:

      Although this is traditionally seen as a female name, via the classical mythological nymph who pined away for Narcissus until all that remained of her was a disembodied voice — it can also be used for boys. Remember that old song, 'Little sir echo, how do you do?'
  14. Shiloh
    • Origin:

      Hebrew
    • Meaning:

      "tranquil"
    • Description:

      Haunting biblical and Civil War place-name; now unisex—especially after the mega-high-profile Brangelina couple picked it for their daughter. It debuted in the Top 1000 for boys in 2015.
  15. Thiago
    • Origin:

      Spelling variation of Tiago, diminutive of Santiago
    • Meaning:

      "supplanter"
    • Description:

      Some high-profile soccer stars, such as Thiago Silva, have contributed to its success. The correct Portuguese pronunciation is chee-AH-go. Thiago is ranked Number 2 for boys in Puerto Rico.
  16. Eduardo
    • Origin:

      Spanish and Italian variation of Edward
    • Meaning:

      "wealthy guardian"
    • Description:

      A stalwart of Latin nomenclature that could work just as well for Anglos. Proof lies with the celebrity birth announcement — Hilaria and Alec Baldwin named their fifth child Eduardo Pau Lucas in 2020. This doesn't seem to have much impact on other parents, though: over 900 boys received the name in 2021, but the number is steadily decreasing.
  17. Diego
    • Origin:

      Spanish variation of James
    • Meaning:

      "supplanter"
    • Description:

      The energetic Diego is rising rapidly along with a lot of other authentically Spanish baby names that work perfectly well with surnames of any origin.
  18. Indigo
    • Origin:

      Greek
    • Meaning:

      "Indian dye"
    • Description:

      Indigo is one of the most appealing and evocative of the new generation of color names. Color names have joined flower and jewel names -- in a big way -- and Indigo, a deep blue-purple dye from plants native to India, is particularly striking for both girls and boys. Although most people don't think of it like this, Indigo might also be considered among the most stylish Greek baby names in use today. Some cultural references: The Indigo Girls are a folk duo, 'Mood Indigo' is a classic Duke Ellington jazz composition, and there is a 1970's New Age theory that Indigo children possess special, sometimes supernatural abilities. Indigo is the name of a character in the Ntozake Shange novel Sassafrass, Cypress & Indigo, and was used for his daughter by Lou Diamond Phillips.
  19. Antonio
    • Origin:

      Spanish and Italian variation of Anthony
    • Meaning:

      "from Antium"
    • Description:

      Antonio is a Shakespearean favorite -- the Bard used it in no less than five of his plays, and has long been a ubiquitous classic in Spanish-speaking countries, where the nickname Tonio is also prevalent. Antonio is also among an elite group of perennially popular names in the US, where it has always been among the boys' Top 1000 since baby name record-keeping started in 1880.
  20. Dario
    • Origin:

      Italian variation of Darius
    • Meaning:

      "possessing goodness"
    • Description:

      More creative and artsy than Mario. Dario is starting to edge up the US popularity list after languishing near the bottom of the Top 1000 over the last four decades. Is that inspired by Dario's popularity in Italy, Spain, Germany, and Switzerland?

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