400+ Irish Last Names (With Meanings and Popularity)

  1. Finnegan
    • Origin:

      Irish
    • Meaning:

      "fair"
    • Description:

      If you like the Finn names and love James Joyce, Finnegan is extremely winning. Will & Grace 's Eric McCormack chose the Finnigan spelling for his son. And of course Finnegan gains you access to the great short form Finn.
  2. Grady
    • Origin:

      Irish
    • Meaning:

      "noble"
    • Description:

      Following in the footsteps of popular brother Brady, Grady is another lively, ebullient Irish surname name. The O'Gradys (originally O Gradaugh) were an ancient clan that produced an impressive number of bishops.

      Perhaps the most remarkable O'Grady descendant is Muhammad Ali, whose mother's maiden name was Grady.

  3. Riordan
    • Origin:

      Irish
    • Meaning:

      "bard, royal poet"
    • Description:

      Has a legitimate first name history in its native land and an appealing meaning, but pronunciation is far from obvious.
  4. Lonan
    • Origin:

      Manx, Irish
    • Meaning:

      "little blackbird"
    • Description:

      Typically spelled as Lonán in Ireland, Lonan is its Manx form, though it could also be considered the anglicized form too. The name comes from the Irish lon meaning "blackbird", paired with a diminutive suffix, making this a charming nature-related choice that could make a nice Logan/Conan alternative.
  5. Shea
    • Origin:

      Irish
    • Meaning:

      "the stately, dauntless one"
    • Description:

      The short but solid Irish surname Shea works well for both genders thanks to its soft, succinct sound. The traditional Irish form is Séaghdha, though it could also be used as a short form of Séamus, connected to James.
  6. Donovan
    • Origin:

      Irish
    • Meaning:

      "dark"
    • Description:

      One of the first of the appealing Irish surnames to take off in this country, this boys’ name has long outgrown its "Mellow Yellow" association, which came via the single from a sixties singer-songwriter named Donovan.
  7. Kelly
    • Origin:

      Irish
    • Meaning:

      "war"
    • Description:

      Once the quintessential bouncy teenager name, Kelly helped launch the trend of unisex Irish names . But it now takes a backseat to more substantial surname names like Kennedy.
  8. Fallon
    • Origin:

      Irish
    • Meaning:

      "leader"
    • Description:

      Fallon is one of several boyish surname names introduced in the over-the-top 1980s nighttime soap Dynasty. Despite being a "mom" name, Fallon is making a surprise comeback. It returned to the US Top 1000 in 2019 and has been rising since then, as a new generation of parents fall in love with the sound. It is especially popular in the Southern states.
  9. Ryan
    • Origin:

      Irish
    • Meaning:

      "little king"
    • Description:

      This ultrapopular boys' name is rapidly becoming a hot name for girls; admired for its buoyant Irish spirit.
  10. Malone
    • Origin:

      Irish
    • Meaning:

      "a devotee of Saint John"
    • Description:

      Classic Irish surname with a lot of character and some interesting associations: the title character of a Samuel Beckett novel and basketball great Karl Malone. Malone is a popular name for baby boys in France.
  11. Kellan
    • Origin:

      Spelling variation of Kellen
    • Meaning:

      "swamp; slender"
    • Description:

      Kellan Lutz is the attractive young actor who plays Emmett Cullen in the Twilight series.
  12. Murray
    • Origin:

      Scottish
    • Meaning:

      "settlement by the sea"
    • Description:

      Murray, you may be surprised to discover, is a Scottish surname name --that of an ancient noble clan--with a sea-swept meaning, and just could be in the next wave of reevaluated grandpa names. Currently Number 60 for baby boys born in its native Scotland; it was at its highest in the US in 1922, when it reached Number 208, but has been off the list since 1975. Could it be time for a comeback?
  13. Tully
    • Origin:

      Irish, Scottish
    • Meaning:

      "flood, peaceful; hill"
    • Description:

      Tully is a relaxed, rarely used Irish surname possibility which might provide an alternative to Tommy, Eli, or Troy. It has a long history of usage and a number of meanings, depending on which root you follow.
  14. Barry
    • Origin:

      Irish
    • Meaning:

      "spear"
    • Description:

      This Anglicized form of Bearach or short form of Finbarr was in the Top 200 in the USA for 50 years until the early 80s when it rapidly fell out of favor. Barry has not yet found popularity in the modern era - but that may well change as people rediscover their love of classic figures like musician Barry White, baseballer Barry Bonds or even Barack Obama, whose nickname as a young man was Barry.
  15. Crosby
    • Origin:

      Irish
    • Meaning:

      "village with crosses"
    • Description:

      Crosby is an attractively laid-back Irish surname with retro musical associations to Bing and Crosby, Stills, and Nash, and with a jaunty air. Crosby Braverman was the name of a character on the TV show Parenthood, played by Dax Shepard.
  16. Brennan
    • Origin:

      Irish
    • Meaning:

      "descendent of the sad one"
    • Description:

      Brennan is a winning Irish surname name, more modern than Brian or Brendan, more unusual than Conor and Aidan. The only possible problem with Brennan: people might think you're saying Brendan.
  17. Reagan
    • Origin:

      Irish
    • Meaning:

      "little king"
    • Description:

      A strong, straightforward Irish unisex surname, with a merry glint in its eye, Reagan has been leaping up the popularity lists, to become one of the top girl names starting with R. Some will inevitably link it to President Ronald, but spell it Regan and it's a Shakespearean name: a daughter of King Lear.
  18. Craig
    • Origin:

      Scottish
    • Meaning:

      "from the rocks"
    • Description:

      Craig is a single-syllable baby-boomer name, still common in its native Scotland, but most modern Americans would prefer something like Kyle.
  19. Shannon
    • Origin:

      Irish
    • Meaning:

      "old and wise"
    • Description:

      Irish place-name -- it's a river, a town, and an airport -- once popular but now supplanted by such newer immigrants as Saoirse and Seanan.
  20. Ennis
    • Origin:

      Irish
    • Meaning:

      "from the island"
    • Description:

      An appealing Irish placename with a unisex feel, Ennis would be a fresh alternative to Dennis and Ellis. It's little-used for boys and even rarer for girls, but since Kirsten Dunst and Jesse Plemons used it for their son, it could be one to watch.