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Irish Names for Boys

Irish names for boys have achieved international popularity, ranking high on popularity lists in the US and Ireland itself, as well as in many other Anglophone and European countries. Liam, an Irish diminutive of William, is the brightest star among Irish boy names, ranking Number one in the US and among the top boys’ names in France, Belgium, Germany, Sweden, and Norway as well as Canada, Australia, and New Zealand.

Along with top name Liam, other Irish boy names in the US Top 200 include Aiden, Ryan, Connor, Brayden, Declan, Brody, Rowan, and Finn. Baby boy names popular in Ireland include Sean — now falling in popularity in the US — Oisin, Cillian, and Tadhg. Classic Irish names Kevin and Patrick also still rank high on the US popularity list and remain perennial favorites in Ireland. Browse our full menu of boy names of Irish origin here, ordered by their current popularity. Or you can see our curated lists of Irish boy names and Irish girl names.

  1. OscarHeart
    • Origin:

      English or Irish
    • Meaning:

      "God spear, or deer-lover or champion warrior"
    • Description:

      Oscar has Irish and Norse roots—Norse Oscar comes from the Old English Osgar, a variation of the Old Norse name Ásgeirr. The Irish form was derived from the Gaelic elements os, meaning “deer,” and car, “loving.” In Irish legend, Oscar was one of the mightiest warriors of his generation, the son of Ossian and the grandson of Finn Mac Cumhaill (MacCool).
  2. FinnHeart
    • Origin:

      Irish
    • Meaning:

      "fair or white"
    • Description:

      Finn is a name with enormous energy and charm, that of the greatest hero of Irish mythology, Finn MacCool (aka Fionn mac Cuumhaill), an intrepid warrior with mystical supernatural powers, noted as well for his wisdom and generosity.
  3. RowanHeart
    • Origin:

      Scottish and Irish
    • Meaning:

      "rowan tree; little redhead"
    • Description:

      Rowan – a strong surname and nature name (it's a tree with red berries) – is deservedly growing in popularity. Some scholars identify Rowan as originally a girls’ name, related to Rowena and Rhonwen, while others say Rowan's always been used for both genders. Sharon Stone chose the Roan spelling, which also relates to the reddish color, for her son, while Brooke Shields used Rowan for her daughter. Yet another increasingly popular spelling is Rowen.
  4. RonanHeart
    • Origin:

      Irish
    • Meaning:

      "little seal"
    • Description:

      Ronan is the compelling legendary name of twelve Irish and Scottish saints that is now drawing some deserved attention; this cousin of the ascending Roman and Rowan was chosen by actor Daniel Day-Lewis and his writer-director wife Rebecca Miller in 1998, and more recently by actress Catherine Bell.
  5. RoryHeart
    • Origin:

      Irish
    • Meaning:

      "red king"
    • Description:

      This spirited Gaelic classic, which became popular in Ireland via the illustrious twelfth century king Rory O'Connor, makes a highly energetic choice, now used for either sex. Rory's gender split is still trending boyward; it's one of the coolest boys' names starting with R.
  6. LiamHeart
    • Origin:

      Irish short form of William
    • Meaning:

      "resolute protection"
    • Description:

      Liam originated as a nickname for Uilliam, the Irish variation of William. William is an English name from Germanic roots that was brought to Ireland when the British fled England following the Norman Conquest. The Irish began using English names, including William, which led to the development of Uilliam and its short form, Liam.
  7. CillianHeart
    • Origin:

      Irish
    • Meaning:

      "war strife or church"
    • Description:

      This classic Irish name , which is better known in this country by its Anglicized form Killian, is one of several newer recommended Gaelic choices that have entered the American name pool. Killian now stands at Number 516 in the US, while Cillian is 22 in its Irish homeland.
  8. KieranHeart
    • Origin:

      Irish
    • Meaning:

      "little dark one"
    • Description:

      Long popular in Ireland and England, Kieran, the name of Ireland's first-born saint and twenty-five other saints, has been building its U.S. fan base thanks to its strong and attractive sound, and its fashionable Irish brogue. While Ciaran is the more authentic Irish spelling, Kieran is more popular this side of the Atlantic.
  9. FlynnHeart
    • Origin:

      Irish
    • Meaning:

      "son of the red-haired one"
    • Description:

      Flynn, a charming Irish surname, is still used only quietly, despite its easygoing, casual cowboy charm, unlike Finn which is a star of this genre. Flynn was the choice of Orlando Bloom and Miranda Kerr for their baby boy, and is also the middle name -- used as his first -- of a son of Miranda's fellow supermodel Elle Macpherson, of Gary Oldman's son Gulliver and Marley Shelton's daughter West.
  10. RaffertyHeart
    • Origin:

      Irish
    • Meaning:

      "floodtide, abundance, prosperity"
    • Description:

      Jaunty and raffish, Rafferty is one of the most engaging of the Irish surnames, used by Jude Law and Sadie Frost for their son. Fortunately, it doesn't still go by its original form: O'Raighbheartaigh.
  11. DeclanHeart
    • Origin:

      Irish, meaning unknown, possible "man of prayer"
    • Meaning:

      "man of prayer"
    • Description:

      Declan is the Anglicized form of the Irish name Deaglán. St. Declan was one of the first missionaries to bring Christianity to Ireland, preceding St. Patrick. Originally from Wales, he founded the monastery of Ardmore in Ireland.
  12. NolanHeart
    • Origin:

      Irish
    • Meaning:

      "champion"
    • Description:

      Nolan is one of the rising Irish surname names, in the spirit of Conan and Ronan, partially inspired by pitcher Nolan Ryan-- who was named Lynn at birth, after his father. Nolan is a cheerful, friendly traditional Irish surname with the appropriate meaning of "champion," and one of the new attractive boy names starting with N.
  13. HughHeart
    • Origin:

      English from German
    • Meaning:

      "mind, intellect"
    • Description:

      Patrician to the core, Hugh was firmly in the Top 100 until 1903. It's never achieved those heights again, though it has always managed to remain in the Top 1000, scraping bottom at literally Number 1000 in 2006 before reversing course and heading back upwards.
  14. FinleyHeart
    • Origin:

      Irish and Scottish
    • Meaning:

      "fair-haired hero"
    • Description:

      Finley is a Scottish royal name (it belonged to Macbeth's father) riding the wave of Finn names. Chris O'Donnell used it for one of his sons, and Angie Harmon and Jason Sehorn did a gender switch when they named their daughter Finley.
  15. CormacHeart
    • Origin:

      Irish
    • Meaning:

      "charioteer"
    • Description:

      Both offbeat and upbeat, this evocative traditional Irish name that runs through Celtic mythology is known here via award-winning novelist Cormac McCarthy (born Charles). The author's adopted name is related to Cormac Mac Airt, one of the great legendary high kings of Ireland.
  16. CianHeart
    • Origin:

      Irish
    • Meaning:

      "ancient"
    • Description:

      A handsome Irish name for boys, very popular in that country, but in the US this traditional spelling might cause pronunciation problems. Still, whether Cian or Kian, it's simple and straightforward enough for the initiated. Cian is rising in the British popularity charts. This was the name of several legendary figures, including Cian, son of the god of medicine. His own son was Lugh, the sun god and father of the Ulster warrior Cuchulain and Cian is also the name of the son-in-law of the high king Brian Boru. So very well connected.
  17. IvoHeart
    • Origin:

      German
    • Meaning:

      "yew wood, archer"
    • Description:

      Ivo is an unusual, catchy name with the energetic impact of all names ending in 'o'. Hardly heard in the U.S., it is used a bit more frequently in England, as is the related Ivor, a favorite of such novelists as Evelyn Waugh and P.G. Wodehouse. Ivo is currently most popular in the Netherlands.
  18. ColinHeart
    • Origin:

      Diminutive of Nicholas or Irish and Scottish
    • Meaning:

      "pup"
    • Description:

      Thanks to its dashing Anglo-Irish image--due partly to Colins Firth and Farrell-- and its c-initialed two-syllable sound, Colin and its cousin Collin have enjoyed a long run of popularity, reaching as high as Number 84 in 2004.
  19. MacHeart
    • Origin:

      Scottish or Irish
    • Meaning:

      "son of"
    • Description:

      In Ireland and Scotland, Mac and Mc mean "son of"; here, Mac is a generic fella, or a short form cooler than either Matt or Max. Mac can be a nickname of any longer Mac or Mc starting name such as McCoy or Macalister. If you want to make it feel more complete, you can always spell it Mack.
  20. LorcanHeart
    • Origin:

      Irish
    • Meaning:

      "little, fierce"
    • Description:

      Lorcan is a name rich in Irish history as belonging to several kings, including the grandfather of the most famous high king of Ireland, Brian Boru. Lorcan O'Toole, known in English as Laurence O'Toole, is the patron saint of Dublin, so it's not too surprising that Irish-born actor Peter O'Toole named his son Lorcan.