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Names Ending in X for Boys

Nameberry
By Nameberry
Updated Thu Nov 30 2023
Boy names ending in X are an exciting group.

Max is the most popular boy name ending with X right now. Along with Max, other boy names in the US Top 1000 include Maddox, Alex, Jax, and Knox.

Here are all Nameberry’s boy names that end with the letter X. 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. 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. 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.
  3. 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.
  4. Maddox

    • 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.
  5. 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.
  6. 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.
  7. 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.
  8. 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 62 baby boys were named Calix in 2024. An indirect influence is the actress Calista Flockhart, who introduced Americans to the female version of this attractive Greek name to prominence.
  9. Alex

    • 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.
  10. Pax

    • 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.
  11. Hendrix

    • 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.
  12. 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.
  13. Dax

    • 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. 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.
  15. Roux

    • 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. Eryx

    • Origin:

      Greek mythology name

    • Meaning:

      "to keep in, to curb"

    • 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. Jax

    • Origin:

      Modern invented name, English

    • Meaning:

      "God is Gracious"

    • Description:

      With its cool -X ending, Jax is an update on the classic nickname Jack, likely inspired by the rise of Jackson. It garnered attention in the US thanks to the game, Mortal Kombat II back in the '90s, and was pushed up the charts when it was used in the show Sons of Anarchy, in which Jackson "Jax" Teller is the central character.
  18. Jaxx

    • Origin:

      Modern invented name, English

    • Meaning:

      "God is Gracious"

    • Description:

      Unusual letters like X and Z are often considered badass and cool, so by that logic, does having two Xs in one name make it next level awesome? This seems to have been the thinking of the parents to nearly 3000 babies named Jaxx in America since the spelling first came into use in the 90s.
  19. Nyx

    • Origin:

      Greek mythology name

    • Meaning:

      "night"

    • Description:

      Nyx is the name of the Greek goddess of the night. It's used for baby boys in small numbers.
  20. Ajax

    • 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.