400+ Irish Last Names (With Meanings and Popularity)

  1. Daley
    • Origin:

      Irish
    • Meaning:

      "assembly, gathering"
    • Description:

      Much stronger than Dale for a boy.
  2. Hagan
    • Origin:

      Irish
    • Meaning:

      "little fire"
    • Description:

      A little further down the road paved by Aidan and Logan.
  3. Keenan
    • Origin:

      Irish
    • Meaning:

      "ancient"
    • Description:

      A lively boys' name that works well for girls.
  4. Hamill
    • Origin:

      English
    • Meaning:

      "scarred"
    • Description:

      Though we usually think a name's image in contemporary culture supersedes its ancient meaning, this is a case where the definition could undermine a child's self-esteem.
  5. Carlin
    • Origin:

      Irish
    • Meaning:

      "little champion"
    • Description:

      While the lin ending is more commonly found in girls' names, Carlin is an authentic Irish male choice and was used just about evenly for both sexes in the US last year.
  6. Carey
    • Origin:

      Irish
    • Meaning:

      "dark, black"
    • Description:

      Variously spelled trendy name in the 1970s that hasn't even been in the Top 1000 in a decade.
  7. Calloway
    • Origin:

      English from Latin
    • Meaning:

      "pebbly place"
    • Description:

      Calloway is one of those irresistibly jaunty, animated three-syllable surnames, like Sullivan and Finnegan — but this one has the added attraction of jazzy ties to the immortal "Dean of American Jive," Cab Calloway. For a girl, this could be an unconventional route to the cool nickname Callie.
  8. Duffy
    • Origin:

      Irish
    • Meaning:

      "dark"
    • Description:

      This familiar Irish surname, best known as the name of the mononamed Welsh female singer, is extremely rare as a first name in the US but could make an original Irish choice.
  9. Dempsey
    • Origin:

      Irish surname
    • Meaning:

      "proud"
    • Description:

      One of the cool new surname-names for girls, likely influenced by the stardom of Patrick Dempsey (aka McDreamy).
  10. Carlin
    • Origin:

      Irish
    • Meaning:

      "little champion"
    • Description:

      Stronger and more contemporary twist on Carla or Carly, Carlin was used just about equally for girls and boys in the US last year.
  11. Malone
    • Origin:

      Irish surname
    • Meaning:

      "devotee of St. John"
    • Description:

      Currently more popular among baby girls than boys — perhaps due to the association with Irish folksong "Molly Malone."
  12. Fey
    • Origin:

      Word name
    • Description:

      Fey, for middle name purposes, could be thought of as a fey spelling of Fay. These days, however, Fey would be considered by most people to be honoring comedian Tina.
  13. Carroll
    • Origin:

      Anglicized variation of Irish Cearbhall
    • Meaning:

      "hacking with a weapon"
    • Description:

      This name was consistently in the boys' Top 200 until WW2. It's a name with so many dimensions to it: the hyper-masculine meaning, the surname-as-firstname trendiness, and the softer sound and connotation since homophone Carol was favoured in the 1940s and '50s for daughters. We think it's time for a resurgence of Carrolls amongst the boys.
  14. Gilmore
    • Origin:

      Irish and Scottish
    • Meaning:

      "devoted to the Virgin Mary"
    • Description:

      For better or worse, this name is still firmly attached to the TV series Gilmore Girls. It's one of a number of Scottish and Irish surname names beginning with Gil, meaning "servant". In this case, it's "servant of Mary", making it a subtle male Marian name.
  15. Hennessy
    • Origin:

      Irish surname name
    • Description:

      Hennessy has attracted some notice as a first name via rapper Cardi B's sister Hennessy Carolina. It certainly has a pretty sound and can hold its own with the new generation of Irish names for girls that originated as surnames, such as Kennedy, McKenna, and Riley. Hennessy is also the brand name of a cognac, which is how Cardi B got her stage name -- her nickname was Bacardi.
  16. Duffy
    • Origin:

      Irish
    • Meaning:

      "dark"
    • Description:

      This Irish surname packs a lot of attitude, projecting an image of spunk and sass. The Welsh singer Duffy, born Aimee Anne Duffy, is best known for her songs Mercy and Warwick Avenue.
  17. Connolly
    • Origin:

      Irish
    • Meaning:

      "fierce as a hound"
    • Description:

      Connolly, an alternate spelling of Connelly, could make a livelier and less common substitute for Connor.
  18. Malloy
    • Description:

      More obscure Irish surname-name, also spelled Molloy, that's prime for use.
  19. Harmon
    • Origin:

      Irish variation of Herman
    • Description:

      Has a harmonic feel.
  20. Dagan
    • Origin:

      Hebrew
    • Meaning:

      "corn, grain"
    • Description:

      Popular in Israel for girls and boys born on Shavout, a harvest festival. In Babylonian mythology, Dagan was the god of the earth and grain.