The O Names

Baby names that begin or end with the letter o have long been particularly cool, especially (though there are a few feminine selections) for boys. The options, of course, range far beyond those offered here, especially considering the entire world of Latinate baby names out there, but this group should give you a pretty good start.

  • Nemo

    Gender: M LoveDislike

    One of the best known early Nemos was the captain in Twenty Thousand Leagues under the Sea, while the more familiar modern one is the animated little orange fish in the Disney movie.... Read More 

  • Neo

    Gender: M LoveDislike

    This nouveau name of Keanu Reeves's character in The Matrix has not enjoyed the same burst of popularity as its female counterpart, Trinity, but it definitely sounds, well, newer. Neo... Read More 

  • Nico

    Gender: M LoveDislike

    Nico is one of the great nickname names, full of charm, energy and sex appeal -- a neo Nick. It's been in the Top 500 for four years now, and could go even higher.

    Nico is commonly... Read More 

  • Nicolo

    Gender: M LoveDislike

    Nicolo is a more lively and exotic variation of Nicholas. A name with a long, distinguished Italian history of its own, it also boasts the charming nickname Nico.

    Although the female... Read More 

  • Nilo

    Gender: M LoveDislike

    So much more exotic than Danny.Read More 

  • O'Brian

    Gender: M LoveDislike

    Irish surname that refers to High King Brian Boru, also spelled O'Brien. Makes a fabulous first name.Read More 

  • O'Callahan

    Gender: M LoveDislike

    One of the most usable of the fashionable O'Names.Read More 

  • O'Casey

    Gender: M LoveDislike

    To modernize and add some oomph to the dated CASEY, add an O'-and also honor the great Irish playwright Sean.Read More 

  • O'Connor

    Gender: M LoveDislike

    Perfect name for the child of dog enthusiasts, and much more distinctive than the trendy Connor.Read More 

  • O'Donnell

    Gender: M LoveDislike

    Forget Donald. Honor Grandpa Don with this new spin.Read More 

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