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1770+ Boy Names Ending in O

  1. Santago

    • Description:

      Santago is a masculine name that appears to be a variant spelling of Santiago, which combines the Spanish elements "San" (Saint) and "Tiago" (James). This variation might have evolved through regional pronunciation differences or creative adaptation. The traditional Santiago honors St. James the Apostle and has deep significance in Spanish and Latin American cultures. Santago maintains the melodic quality and cultural resonance of the original while offering a slightly different spelling. Though less common than Santiago, Santago carries the same warm, rhythmic sound that makes Spanish names appealing worldwide. The name evokes connections to the famous pilgrimage route Camino de Santiago in Spain and represents strength and spiritual significance across Hispanic cultures.

  2. Nuncio

    • Origin:

      Italian, diminutive of Annunzio

    • Meaning:

      "messenger"

    • Description:

      Attractive Latinate choice, a lively possibility for the child of a journalist.
  3. Niilo

    • Description:

      Niilo is a Finnish masculine name derived from Nicholas, ultimately stemming from the Greek 'Nikolaos' meaning 'victory of the people.' Popular in Finland and other Nordic countries, Niilo carries cultural significance while remaining relatively uncommon internationally. The name combines traditional roots with a distinctive sound that works well across languages. Finnish naming traditions have kept Niilo relevant through generations, though usage patterns show typical fluctuations. Outside Finland, the name maintains an exotic appeal while being relatively straightforward to pronounce. Notable namesakes include Finnish authors, athletes, and historical figures. Niilo offers parents seeking Nordic names an authentic option with historical depth and contemporary usability.

  4. Petro

    • Description:

      Petro is a masculine name with Slavic and Greek origins, serving as a variant of Peter, which derives from the Greek 'Petros' meaning 'rock' or 'stone.' Particularly popular in Ukrainian, Russian, and other Eastern European cultures, Petro maintains strong connections to its biblical roots, as Peter was one of Jesus's twelve apostles. The name carries a sense of strength and steadfastness, reflecting its literal meaning. While less common in English-speaking countries, Petro offers a distinctive international flavor while remaining relatively easy to pronounce and spell. Its short, powerful sound gives it a robust quality that parents seeking a name with historical depth and cross-cultural appeal might appreciate.
  5. Baretto

    • Origin:

      Portuguese

    • Description:

      Rider Strong used this variation of the Portuguese surname Barreto as the middle name for his son Indigo.
  6. Oratio

    • Description:

      Oratio is a masculine name with ancient Roman roots, derived from the Latin word 'orare,' meaning 'to speak' or 'to pray.' It's closely related to the more common Horatio, famously borne by characters in Shakespeare's 'Hamlet' and naval commander Horatio Nelson. The name evokes associations with eloquence, rhetoric, and the classical tradition of public speaking, as reflected in the English word 'oration.' Though rare in contemporary usage, Oratio carries a dignified, scholarly quality that connects to classical education and literature. Its melodic sound and historical depth might appeal to parents drawn to names with intellectual associations and classical heritage. The name provides a distinctive alternative to more common classical revivals like Julius or Marcus.
  7. Ynocencio

    • Description:

      Ynocencio is a rare Spanish variation of the Latin name Innocencio, derived from 'innocens,' meaning 'innocent' or 'harmless.' This distinctive spelling with a 'Y' instead of an 'I' gives the name an uncommon flair while preserving its historical roots. The name carries connotations of purity, virtue, and blamelessness. Ynocencio has never been widely used in English-speaking countries but maintains some presence in Spanish-speaking communities and regions with Hispanic cultural influences. The name has historical connections to several Catholic saints named Innocentius (the Latin form), including Pope Innocent I, adding religious significance for some families.
  8. Gniewko

    • Origin:

      Diminutive of Gniewomir, Polish

    • Meaning:

      "one who calms anger"
  9. Fabrizio

    • Origin:

      Italian form of the Latin family name Fabricius

    • Meaning:

      "craftsman"

    • Description:

      Romantic Italian choice.
  10. Tahvo

    • Origin:

      Finnish variation of Stephen, Greek

    • Meaning:

      "garland, crown"

    • Description:

      A lively take on Stephen.
  11. Luis antonio

    • Description:

      Luis Antonio is a masculine compound name with Spanish and Portuguese origins. Luis derives from the Germanic name 'Hludwig,' meaning 'famous warrior' or 'renowned in battle,' while Antonio comes from the Roman family name 'Antonius,' possibly meaning 'priceless' or 'invaluable.' This combination is particularly common in Hispanic cultures, including Spain, Mexico, and throughout Latin America. The name carries a strong Catholic tradition, as Saint Anthony is a beloved saint in Hispanic communities. Luis Antonio projects strength, dignity, and cultural heritage. The dual-name format is typical in Spanish-speaking regions where compound names are often given to honor family members or saints.
  12. Keitaro

    • Origin:

      Japanese

    • Meaning:

      "blessed"
  13. Casiano

    • Origin:

      Spanish form of Cassian

    • Meaning:

      "hollow"

    • Description:

      An international variant of the rising star Cassian, this Spanish name has a touch of flair and artiness.
  14. Ferdinando

    • Description:

      Ferdinando is a masculine name with Germanic origins, representing the Italian and Spanish form of Ferdinand. Derived from elements meaning 'brave journey' or 'bold protector,' this regal name has been borne by numerous European monarchs and nobles throughout history, particularly in Spain, Italy, and the Holy Roman Empire. The name carries an air of aristocratic heritage and classical dignity. While Ferdinand is more common in English-speaking countries, Ferdinando maintains popularity in Italian and Spanish-speaking regions. The longer form offers a melodious quality with its flowing syllables. Famous bearers include composers and artists, adding cultural richness to the name's legacy. For parents seeking a name with historical gravitas, international recognition, and a touch of Mediterranean flair, Ferdinando provides a distinguished yet accessible option.
  15. Colombo

    • Description:

      Colombo is a masculine name of Italian origin, derived from the Latin 'columbus' meaning 'dove'. The dove symbolizes peace and purity in many cultures, giving the name positive connotations. Colombo gained international recognition through the famous explorer Christopher Columbus (Cristoforo Colombo in Italian) who voyaged to the Americas in 1492. The name also became widely known through the popular detective television series 'Columbo'. In Italy, it exists both as a given name and surname, particularly common in northern regions. While relatively uncommon as a first name outside Italy, Colombo carries rich historical associations and the gentle symbolism of the dove. For parents seeking an Italian name with historical significance and peaceful symbolism, Colombo offers a distinctive option.
  16. Alexio

    • Origin:

      Greek

    • Meaning:

      "defending men"

    • Description:

      Removing one letter from the somewhat intimidating Alexios gives you Alexio, a charming and more accessible variation.
  17. Viviano

    • Description:

      Viviano is a melodious masculine name of Italian and Spanish origin, derived from the Latin name 'Vivianus,' which comes from 'vivus' meaning 'alive' or 'living.' This expressive name carries connotations of vitality, energy, and life force. While not among the most common Italian names internationally, Viviano has maintained consistent usage in Italy and Spanish-speaking countries. The name has a rhythmic quality with its alternating consonants and vowels, creating a name that feels both strong and musical. Viviano shares roots with the more familiar Vivian, but offers a distinctly masculine form with its 'o' ending. For parents seeking a name with Latin roots, positive meaning, and a touch of Mediterranean flair, Viviano presents an appealing option that's distinctive without being difficult to pronounce or understand.
  18. Sung-ho

    • Origin:

      Korean

    • Description:

      The most popular name for Korean boys in 1960.
  19. Fabricio

    • Description:

      Fabricio is a masculine name with Latin roots, derived from the Roman clan name Fabricius, which means 'craftsman' or 'artisan.' Popular in Italian, Spanish, and Portuguese-speaking countries, the name carries connotations of creativity, skill, and craftsmanship. Fabricio has classical roots while maintaining a certain contemporary appeal with its distinctive ending. In Brazil and parts of Latin America, the name enjoys moderate popularity, associated with strength of character and artistic abilities. The name has aristocratic connections in European history but maintains an approachable quality. While less common in English-speaking countries, Fabricio has gained some recognition through global cultural exchange, sports figures, and media. Its four syllables create a rhythmic, melodious sound that works well across multiple languages.
  20. Bienvenido

    • Description:

      Bienvenido is a masculine Spanish name directly translating to 'welcome' or 'well-come.' Derived from Latin 'bene' (well) and 'venire' (to come), it originated as a meaningful name given to long-awaited or specially celebrated children. The name is most common in Spanish-speaking countries, particularly in the Philippines and Dominican Republic, where Spanish naming traditions remain strong. While not among the most frequent Spanish names, Bienvenido carries warm connotations of hospitality, acceptance, and joy. It follows the Spanish tradition of using words with positive meanings as personal names, similar to Esperanza (hope) or Dolores (sorrows).