Irish Names for Boys
Updated Tue Mar 03 2026
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Irish names for boys have achieved international popularity, ranking high on top boy name 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.
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- Rowan
Origin:
Scottish and IrishMeaning:
"rowan tree; little redhead"Description:
With its gentle sounds and earthy vibes, the name Rowan feels like a fusion of different styles. A word name, a surname, and a gender-neutral name, Rowan is rustic but trendy, blending the vibes of both Owen and Oakley.
- Finn
Origin:
IrishMeaning:
"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.
- Oscar
Origin:
English or IrishMeaning:
"God spear, or deer-lover or champion warrior"Description:
Oscar is one of the most stylish Old Man Names of our era. While it's softened slightly in popularity over the past 20 years, that may be considered a very good thing.
- Kieran
Origin:
IrishMeaning:
"little black-haired 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.
- Declan
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.
- Nolan
Origin:
IrishMeaning:
"champion"Description:
The friendly and sporty feeling Nolan blends some of the best qualities of other popular boy names. With the gentle but energetic sounds of Noah, a hint of the classic Nicholas, and the cool, surname-style vibe of Greyson or Colton, it makes for a familiar and grounded choice.
- Rory
Origin:
IrishMeaning:
"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.
- Ronan
Origin:
IrishMeaning:
"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.
- Liam
Origin:
Irish short form of WilliamMeaning:
"resolute protection"Description:
Liam is the top boys' name in the US, holding the Number One spot for the past eight years and also ranking as one of the most popular boys' names around the western world.
- Quinn
Origin:
IrishMeaning:
"descendant of Conn, chief leader, intelligence"Description:
Quinn is an engaging Celtic surname, zippy, concise and strong. While it may now lean feminine in the US, given to girls about 80% of the time, it is still given to a substantial number of boys: 615 in a recent count.
- Finley
Origin:
Irish and ScottishMeaning:
"fair-haired hero"Description:
A hugely popular choice for boys in England and Wales, Finley has been used for both sexes in the US since the early 2000s, and has since become one of the most popular unisex names. Until recently, it was tilting slightly towards the girl side, however, as of 2024, it leans more masculine.
- Flynn
Origin:
IrishMeaning:
"descendant 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.
- Cillian
Origin:
IrishMeaning:
"war strife or church"Description:
Cillian is one of the native Irish names that, along with Aiden and Declan, is becoming an unlikely favorite in contemporary America. The Killian spelling has been more popular in the US, but Cillian's star is rising, perhaps thanks to Irish actor Cillian Murphy, star of Oppenheimer and Peaky Blinders.
- Kian
Origin:
Irish; PersianMeaning:
"ancient; king"Description:
A friendly Irish and Persian name chosen by Geena Davis for one of her twin boys, whose father is Iranian.
- Gus
Origin:
Diminutive of Augustus, Angus, Gustave, Augustin, Augusten, Augustine, AugustDescription:
Gus is a homey grandpa nickname name that can work as a short form for any of the above or stand on its own as a cutting-edge replacement for Max and Jake--though it was off the Top 1000 from 1978 until 2016, when it squeaked in at Number 999.
- Ivo
Origin:
Germanic, SlavicMeaning:
"yew wood, archer; God is gracious"Description:
Succinct, stylish, and catchy, Ivo has the energetic impact of other names ending in -o. It is a multicultural choice with two distinct origins, and, as such, is familiar across a variety of countries, ranging from the Netherlands to Brazil, from Portugal to Czechia.
- Sullivan
Origin:
Irish surnameMeaning:
"black-eyed one"Description:
Sullivan is a jaunty Celtic three-syllable name, with a real twinkle in its eye. It was immortalized in the 1930s classic film Sullivan's Travels and was chosen for one of Patrick Dempsey's twin boys. Nickname Sully is equally jaunty.
- Killian
Origin:
IrishMeaning:
"war strife or church"Description:
Killian – aka Cillian – is a spirited yet resonant Gaelic name that was borne by several Irish saints and could make a distinctive replacement for the dated Kelly. Kylian is another spelling that's gaining traction, thanks to French soccer star Kylian Mbappé. Possible downsides: an unsavory first syllable and a connection to the trendy brew.
- Ryan
Origin:
IrishMeaning:
"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 rí, 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.
- Rafferty
Origin:
IrishMeaning:
"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.
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