X Factor Baby Names

X Factor Baby Names

The letter X seems to all by itself create cool baby names. Think about Jackson, an already-trendy name made livelier by the Jaxon variation. Even classic names with an X, such as Alexander, seem more, well, exciting compared to other traditional names.

Along with Alexander and Jaxon, other baby names with an X in the US Top 200 include Axel, Xavier, Braxton, Ximena, Alexandra, Max, Maddox, and Xander. Even a silent X makes baby names infinitely cooler, such as in Croix, Deveraux, Margaux, and Roux. One X name you won’t see on this list: Alexa. Alexa is now inextricably linked to Amazon’s virtual assistant and as such, is one of the fastest-falling names of the moment.

However, there are plenty more wonderful names with Xs. Some of the best baby names with the X factor are here, ordered by their current popularity on Nameberry.

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Names That Start with X

Baby Names A-Z

  1. Felix
    • Origin:

      Latin
    • Meaning:

      "happy, fortunate"
    • Description:

      Felix is one of those ancient but nontraditional names for boys that have come into favor over the past few decades, a favorite of parents who want a masculine name with history and heft that breaks ranks with the standard Franks and Freds. Felix is also an international darling, ranking in the Top 100 in several European and English-speaking countries.
  2. Alexander
    • Origin:

      Greek
    • Meaning:

      "defending men"
    • Description:

      Alexander has been in a Top 25 boys' name in the US for 30 years now. But namers are still attracted to its imposing historic pedigree.
  3. Nyx
    • Origin:

      Greek mythology name
    • Meaning:

      "night"
    • Description:

      In Greek mythology, Nyx was a powerful goddess and the embodiment of the night, but when spoken, its negative meaning can't be ignored.
  4. Max
    • Origin:

      English and German diminutive of Maximilian or Maxwell
    • Meaning:

      "greatest"
    • Description:

      Max was derived from Maximilian, a Latin name that originated from the Roman family name Maximus. The character name Max in the children's classic Where the Wild Things Are had an impact on baby namers. Max is a widely used name internationally.
  5. Xavier
    • Origin:

      Basque
    • Meaning:

      "new house"
    • Description:

      Xavier originated is use as a given name after Saint Francis Xavier, cofounder of the Jesuit order, who got his name from the Spanish-Basque village where he was born. His birthplace was Javier, the name of which was derived from the Basque place name Etxeberria, meaning "castle" or "new house."
  6. Axel
    • Origin:

      Scandinavian variation of Absalom
    • Meaning:

      "father of peace"
    • Description:

      A classic in its native Scandinavia, Axel has a cool rock 'n' roll flavor in the US, thanks to Guns N' Roses' Axl Rose (born William). With its distinctive letter 'x', it has an effortlessly cool vibe about it, and is currently growing in popularity.
  7. Calix
    • Origin:

      Male variation of Calixta or Latin
    • Meaning:

      "chalice"
    • Description:

      Calix is once-obscure name that is starting to see some use in the US, where 47 baby boys were named Calix in 2023. An indirect influence is the actress Calista Flockhart, who introduced Americans to the female version of this attractive Greek name to prominence.
  8. Beatrix
    • Origin:

      Latin
    • Meaning:

      "she who brings happiness; blessed"
    • Description:

      Beatrix has a solid history of its own apart from Beatrice, with that final x adding a playful, animated note to the name's imposing history and stately vibe.
  9. Knox
    • Origin:

      Scottish
    • Meaning:

      "round hill"
    • Description:

      Knox is an old Scottish surname that Brad Pitt (whose great-great-grandfather was named Hal Knox Hillhouse) and Angelina Jolie took out of the back cupboard, dusted off, and elevated to coolness--to the point where it entered the popular baby names list in 2009. Knox now ranks among the most influential celebrity baby names.
  10. Phoenix
    • Origin:

      Arizona place-name and Greek
    • Meaning:

      "dark red"
    • Description:

      Effortlessly cool with a hint of the mystical, Phoenix rolls a lot of trends into one: it's a place-name and a bird name, it ends in the stylish letter x, it's got in-built nicknames, and it's unisex too. Familiar but not over-popular, Phoenix ranks in the US and UK Top 1000s.
  11. Maxwell
    • Origin:

      Scottish
    • Meaning:

      "great stream"
    • Description:

      A happy medium between the weighty Maximilian and the laid-back Max, Maxwell is one of the most classic and attractive Scottish names. Early influences on the name's revival include Maxwell Smart of the television show, and then movie, Get Smart, and the Beatles song about Maxwell's Silver Hammer.
  12. Onyx
    • Origin:

      Word name
    • Meaning:

      "gem stone; claw, nail"
    • Description:

      Unlike Pearl and Ruby and more like Jasper, this gem name works well as a boys name. With its strong final X, it feels similar to Alex, Phoenix, Jax, and Rex, while the shiny black quality of the stone feels reminiscent of Orion. Chosen by musician Iggy Azalea for her son in 2020, it has accelerated up the charts and now sits just outside the Top 300.
  13. Xander
    • Origin:

      Diminutive of Alexander, Greek
    • Meaning:

      "defending men"
    • Description:

      Xander is a diminutive of Alexander, the Latin variation of the Greek Alexandros. Its meaning, "defending men," is taken from the Greek roots aléxein, "to defend," and andros, "men." Zander, pronounced the same way, is an alternate spelling.
  14. Xanthe
    • Origin:

      Greek
    • Meaning:

      "golden, yellow"
    • Description:

      X marks the spot in names these days, usually at the middles or ends of names, but here is one that puts it squarely up front.
  15. Lennox
    • Origin:

      Scottish
    • Meaning:

      "elm grove"
    • Description:

      Lennox is an aristocratic and powerful Scottish surname name made truly special by that final x. The worldwide fame of British boxer--World and Olympic champion--Lennox Claudius Lewis brought the name into the spotlight as a first name, while as a last it's tied to Eurythmics singer Annie L.
  16. Fox
    • Origin:

      Animal name
    • Description:

      Fox is one animal name backed by a longish tradition, and then popularized via the lead character Fox Mulder on X Files. Fox is simple, sleek, and a little bit wild, and could make an interesting middle name.
  17. Dexter
    • Origin:

      Latin
    • Meaning:

      "dyer, right-handed"
    • Description:

      The jazzy, ultra-cool Dexter, like most names with an "x," has a lot of energy and dynamism.
  18. Huxley
    • Origin:

      English
    • Meaning:

      "inhospitable place"
    • Description:

      Huxley is definitely rising as a surname name, with its X that makes almost any name cooler. It debuted in the US Top 1000 in 2015. The modern nicknames Hux and Huck certainly don't hurt.
  19. Rex
    • Origin:

      Latin
    • Meaning:

      "king"
    • Description:

      Now that many dogs are named Max, it's safe to use this sleek, solid, regal name again for your child. And with the charm of its final x, its regal meaning, and its offbeat simplicity, Rex is definitely one to consider.
  20. Paxton
    • Origin:

      Latin and English
    • Meaning:

      "peace town"
    • Description:

      Paxton stands out from a lot of other two-syllable surname names for two reasons: the dynamic letter X in the middle, and its admirable peace association, providing the great nickname Pax.