Best Boy Names Ending in O

  1. Giacomo
    • Origin:

      Italian variation of James
    • Meaning:

      "supplanter"
    • Description:

      Giacomo is a primo member of the Giovanni-Gino-Giancarlo-Giacomo gruppo of Italian names that are beginning to be adopted by American parents. Singer/creative baby namer Sting chose it for his son.
  2. Mario
    • Origin:

      Italian variation of Marius, form of mythological name Mars
    • Meaning:

      "warlike"
    • Description:

      Familiar via such notable Marios as Lanza, Cuomo, Andretti, Puzo, and Van Peebles, this Italian name has been fully integrated into the US.
  3. Moe
    • Origin:

      English, diminutive of Moses
    • Meaning:

      "delivered"
    • Description:

      If Gus and Max have made it, why not Moe? Can it be the lingering Three Stooges effect? We think that Moe, like Joe, is one of the friendliest and most open of regular guy nickname names and should get a little more attention.
  4. Benno
    • Origin:

      German
    • Meaning:

      "bear"
    • Description:

      Benno is a cool name in its own right -- there was a tenth century Saint Benno -- though it is also used as a lively nickname for Benjamin. Saint Benno of Meissen is the patron saint of anglers and weavers and, strangely enough, alliteration.
  5. Benno
    • Origin:

      German
    • Meaning:

      "bear"
    • Description:

      Benno is a cool name in its own right -- there was a tenth century Saint Benno -- though it is also used as a lively nickname for Benjamin. Saint Benno of Meissen is the patron saint of anglers and weavers and, strangely enough, alliteration.
  6. Federico
    • Origin:

      Italian and Spanish variation of Frederick
    • Description:

      If Frederick feels too heavy, the Spanish and Italian has more energy. It's a long-term Top 20 name in Italy, and has neat nicknames like Fredo in Italian and Fede in Spanish. Famous bearers include the Spanish poet Federico García Lorca and the Italian filmmaker Federico Fellini. Further back in history, it was the name of a fifth-century Visigoth leader, the brother of Theodoric II.
  7. Po
    • Origin:

      Italian river name
    • Description:

      A river (in Italy), a writer (Bronson), a Teletubby: the Bo of the new millennium.
  8. Alto
    • Origin:

      Latin
    • Meaning:

      "high"
    • Description:

      With its musical allusions, a harmonious possibility.
  9. Paco
    • Origin:

      Spanish, diminutive of Francisco; Native American
    • Meaning:

      "eagle"
    • Description:

      Another winning and relaxed but energetic o-ending Latin name, sometimes associated with designer Paco Rabanne.
  10. Octavio
    • Origin:

      Spanish variation of Octavius
    • Meaning:

      "eighth"
    • Description:

      The most popular of the number names used by Hispanic parents, open to all. Octavia and Octavio are two Spanish baby names that are moving out into the wider world.
  11. Fiero
    • Origin:

      Italian word name
    • Meaning:

      "proud"
    • Description:

      Fiery sound and uplifting meaning, but it's also among the Top 100 dog names. Spelled Fiyero, it's the hero of the book and musical "Wicked."
  12. Tycho
    • Origin:

      Greek
    • Meaning:

      "hitting the mark"
    • Description:

      Tycho and Tychon are Greek names with modern variations such as the Danish Tyge, the Swedish Tyko, and the Dutch Tygo that are popular throughout modern Europe. Tycho was the name of a Greek saint and a Danish astronomer.
  13. 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.
  14. Adriano
    • Origin:

      Italian
    • Meaning:

      "man from Adria"
    • Description:

      Adriano is a dashing Italian name which gets around the possible gender confusion of Adrian.
  15. Rowe
    • Tadeo
      • Origin:

        Spanish variation of Thaddeus
      • Description:

        Has a lot of energy and charm, as does the Italian form, Taddeo.
    • Reno
      • Origin:

        Place-name
      • Description:

        Has a lively and swaggering sound, and also some unfortunate associations with Reno, city of gambling and failed marriages.
    • Gio
      • Origin:

        Italian short form of Giovanni
      • Meaning:

        "God is gracious"
      • Description:

        Giovanni is the Italian form of John, and Gio is its dashing nickname. A lot cooler than Johnny, no?
    • Kitto
      • Origin:

        Cornish, diminutive of Christopher, Greek and Latin
      • Meaning:

        "bearer of Christ"
      • Description:

        Kitto updates Dad Name Christopher with a trendy o-ending short form. Use it as an honor name or an original nickname.
    • Lazaro
      • Origin:

        Italian variation of Lazarus and Eleazar
      • Meaning:

        "God is my helper"
      • Description:

        This sleek Italian name was raised from the dead by Mexican Mozart in the Jungle star Gael Garcia Bernal, who chose it for his son (he also has a daughter named Libertad). For athletic inspiration, Lazaro Alvarez, boxing for Cuba, is the three-time world champion lightweight boxer. Lazarus and root name Eleazar are both also destined for comebacks.