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Irish Boy Names

Irish Boy Names

Irish boy names — and Celtic boy names in general — have been growing in popularity in the U.S. in recent years, with Liam reaching Number 1 and all the different spellings of Aiden climbing to the top of the list. Along with Liam and Aiden, other Irish boy names on the US Top 1000 include Finn, Declan, Connor, and Brody.

In Ireland, top Irish boy names include Conor, Fionn, Oisin, and Cillian. Unique Irish boy names attracting attention include Cashel, Cormac, and Rafferty.

While Irish names have become more popular for both genders, we see the style factor on the rise particularly in Irish boys' names unheard of here a generation ago, such as Declan and Finn. This list orders Irish boy names according to their current popularity on Nameberry, or you can click All to see the full list in alphabetical order.

You also might want to browse our list of Irish Girl Names.

  1. 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.
  2. 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.
  3. 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).
  4. 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.
  5. 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.
  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. 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.
  8. 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.
  9. AidenHeart
    • Origin:

      Irish
    • Meaning:

      "little and fiery"
    • Description:

      Aiden in all its spelling variations is the anglicized version of the Irish Aodhán, which was originally a pet form of the Irish name Aodh (pronounced 'ee'), who was the old Celtic god of the sun and fire. St. Aidan was a famous seventh century Irish saint, noted for his kindness and generosity and for spreading Christianity.
  10. 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.
  11. 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.
  12. 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.
  13. 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.
  14. 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.
  15. 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.
  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. 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.
  18. 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.
  19. RyanHeart
    • Origin:

      Irish
    • Meaning:

      "little king"
    • Description:

      Ryan’s use as a given name was inspired by the surname Ryan, a variation of the Irish O’Riain meaning "son of Rían." Rían is composed of the Irish-Gaelic elements , meaning "king" and an, a diminutive suffix. Ryan is considered a unisex name in the US, where variant spellings Ryann and Ryanne are also valid for girls.
  20. 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.