Irish Names for Boys
Updated Thu Sep 14 2023
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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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- 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.
- Liam
Origin:
Irish short form of WilliamMeaning:
"resolute protection"Description:
Liam is the top boys' name in the US, holding the Number 1 spot for the past seven years and also ranking as one of the most popular boys' names around the western world.
- 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.
- 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.
- 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.
- Kieran
Origin:
IrishMeaning:
"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.
- 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.
- 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.
- Finley
Origin:
Irish and ScottishMeaning:
"fair-haired hero"Description:
Finley has been used for both sexes for enough years to become one of the most popular unisex names. Given nearly equally to boys and girls, Finley appeals to contemporary parents as a truly gender neutral choice.
- 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.
- 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.
- 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.
- Lorcan
Origin:
IrishMeaning:
"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.
- Colin
Origin:
English diminutive of Nicholas or Irish and ScottishMeaning:
"people of victory; 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.
- Aiden
Origin:
IrishMeaning:
"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.
- 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.
- 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.
- Ivo
Origin:
GermanMeaning:
"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.
- Bellamy
Origin:
English and Irish from FrenchMeaning:
"fine friend"Description:
Bellamy is a surname name with an admirable meaning and upbeat rhythm, similar to jovial choices like Rafferty, Barnaby and Willoughby.