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Boys' Names that End in X

X is a cool letter for baby names, whether those names have x in the beginning, middle or end of their spellings. Boys' names that end in x are especially popular.

The top boy name ending in X is Max. Along with Max, other x-ending boy names in the US Top 1000 include Maddox, Alex, Phoenix, Hendrix, Lennox, Dax, Rex, and Fox.

Unique X-ending boys' names on our recommended list include Calix, Felix, Lynx, and Theroux.

Here is the collection of x-ending boys' names on Nameberry. The top names below rank among the current US Top 1000 Baby Names and are ordered by popularity. Unique names rank below the Top 1000 and are listed alphabetically.
  1. FelixHeart
    • Origin:

      Latin
    • Meaning:

      "happy, fortunate"
    • Description:

      Felix was originally a Roman surname but was adopted as a nickname by the ancient Roman Sulla, who believed that he was especially blessed with luck by the gods. It is the name of four popes and sixty-seven saints; in the Bible, Felix is a Roman procurator of Judea.
  2. PhoenixHeart
    • Origin:

      Arizona place-name and Greek
    • Meaning:

      "dark red"
    • Description:

      Phoenix rolls a lot of cool trends into one: it's a place-name and a bird name, it ends in the oh-so-hip letter x, and as the mythic bird that rose from the ashes, it's a symbol of immortality. It's also got celebrity chops, via the acting family that includes Joaquin and the late River, and as the child of an ex-Spice Girl.
  3. KnoxHeart
    • 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.
  4. LennoxHeart
    • 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.
  5. CalixHeart
    • Origin:

      Male variation of Calixta or Latin
    • Meaning:

      "chalice"
    • Description:

      Calix derives from the Latin word for chalice, calyx, which in turn came from the Ancient Greek word kálux, meaning “husk” or “pod.” It is also considered a diminutive of Calixtus, a variation of the Late Roman name Callistus meaning “most beautiful.” Calyx can also be spelled Calyx, as in the funnel or chalice-shaped part of a flower.
  6. OnyxHeart
    • Origin:

      Gem name
    • Description:

      Unlike Pearl and Ruby, this is one gem name suited for boys, the final x making it sound strong and virile. Musician Iggy Azalea chose the name Onyx for her son.
  7. FoxHeart
    • 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.
  8. RexHeart
    • 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.
  9. MaddoxHeart
    • Origin:

      Welsh
    • Meaning:

      "son of Madoc"
    • Description:

      Maddox, a previously obscure Welsh family name with a powerfully masculine image, suddenly came into the spotlight when Angelina Jolie chose it for her son in 2003. By the following year it was in the middle of the Top 1000, and it has risen since.
  10. HendrixHeart
    • Origin:

      Dutch and German, from first name Hendrik
    • Meaning:

      "estate ruler"
    • Description:

      Hendrix is one of those hip rock and roll names, like Lennon, Jagger and Presley, that have been used by fellow celebs and others, to honor the seminal guitarist/singer/songwriter Jimi. And this one has the trendy 'x' ending, as well, helping to propel it up the charts and into the spotlight.
  11. JaxHeart
    • Origin:

      Modern invented name
    • Description:

      Jax is the Dex-Jex-Pax type of x-ending cool -- possibly too cool -- variation of Jack or nickname for Jaxon or Jackson.
  12. AlexHeart
    • Origin:

      Diminutive of Alexander, Alexis
    • Meaning:

      "defending men"
    • Description:

      The independent Alex has become a classic in its own right. One of the truest unisex names, Alex is used almost equally for both sexes. Alex is used both on its own and as a short form of formal names of both genders, such as Alexander, Alexandra, and Alexis.
  13. DaxHeart
    • Origin:

      French place-name
    • Description:

      The appealingly energetic Dax, with its trendy X-ending, re-entered the Top 1000 in 2007. Its somewhat sci-fi vibe emanates from his appearance as a fictional being in the Star Trek universe, seen on the TV show "Star Trek: Deep Space Nine." The Power Rangers character Dax Lo was the Blue Ranger.
  14. AjaxHeart
    • Origin:

      Greek mythology name
    • Description:

      Ajax was the strong and courageous Greek hero featured in Homer's "Iliad," known as Ajax the Great. But it's also the name of a foaming cleanser, and if you find that reference too strong, you might try the shortened Jax instead.
  15. RouxHeart
    • Origin:

      French from Latin
    • Meaning:

      "russet"
    • Description:

      Roux is the name of the dashing Johnny Depp character in Chocolat. Roux is French from a Latin word meaning russet or brownish red; it's also a cooking term for a mixture of flour and butter that forms the foundation of many gravies or sauces. Most of today's children with this name, pronounced roo, will actually spell it Rue, for the female character in The Hunger Games.
  16. EryxHeart
    • Origin:

      Greek mythology name
    • Description:

      Eryx has a sci-fi sound and deep roots. In Greek mythology, Eryx was the son of Poseidon and Aphrodite and a king in Sicily. He was a great boxer, but was eventually beaten by Heracles. He probably got his name from Mount Eryx in Sicily, now known as Erice. Never used before 2005, this could be a mythological gem to watch - and an alternative way to honor an Eric.
  17. LynxHeart
    • Origin:

      Animal name
    • Description:

      One of the fierce new animal names new to name lists, helped by its strong x-ending.
  18. PaxHeart
    • Origin:

      Latin
    • Meaning:

      "peaceful"
    • Description:

      Pax, one of the variations of names meaning peace that are newly popular in these less-than-peaceful times, got a lot of publicity when chosen by Brad & Angelina for their Vietnamese-born son. Parents attracted to Pax may also want to consider Paz, the unisex Spanish version, or Paxton, a growing-in-popularity surname choice that shares that magical X-factor.
  19. LexHeart
    • Origin:

      Diminutive of Alexander
    • Meaning:

      "defending men"
    • Description:

      Cool short form of Alexander, fresher than Alex and less trendy than Xander... for now.
  20. DeverauxHeart
    • Origin:

      French
    • Meaning:

      "riverbank"
    • Description:

      Swashbuckling name worthy of a hero in a romance novel. Deveraux or Devereaux is drawn from the River Eure in France. Mick Jagger has a son named Deveraux.