International Baby Names · Middle Names, Surnames, and Nicknames · Unisex Baby Names
400+ Irish Last Names (With Meanings and Popularity)
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About this list
Irish last names are common through the Western world, with Irish surnames widely used in the US, the UK, and Australia and New Zealand. The top Irish surnames are among the most popular last names in the United States.
The most common Irish last names in the US include exclusively Irish surnames like Murphy and Hughes, along with surnames that count Irish among multiple origins, such as Collins and Hughes. Other popular Irish surnames in the US include Kelly (and Kelley), Sullivan, Hayes, Murray, Kennedy, Riley, and O'Brien.
The top Irish last names in Ireland have some crossover with the US, but generally feel more, well, Irish: Murphy, Kelly, Walsh, O'Connor, O'Sullivan, and Byrne are at the top of the list.
Irish last names have also become increasingly popular as first names, eclipsing traditional Irish first names, especially for girls. Irish last names such as Riley, Kennedy, and Finley are more popular baby names in the US today than traditional Irish names such as Bridget and Patrick.
Riley is the top Irish last name used as a first for baby girls in the US today, with Ryan the top Irish surname used as a first name for boys. Along with Riley and Ryan, the other top Irish last names for boys in the US are Connor and Nolan, with the top Irish last names for girls Kennedy and Quinn. Many of these surname names can be considered gender neutral names.
One fresh factor in Irish last names as first names: Names that start with Mac or O' are now fair game as first names. So if you want to name your baby O'Brien or McNamara, go right ahead. Here's a whole group of rollicking Irish surnames that work for both girls and boys....or you can use one from your own family background.
On Nameberry, the top Irish surnames used as first names include Finn, Ronan, Dylan, and Quinn.
RELATED:
The names
Dylan
Welsh
"son of the sea"
Dylan still feels poetic and romantic after years of popularity. It still ranks highly on the charts, among the top boy names starting with D , so if you choose it, be aware that yours may not be the…
Riley
English, Irish
"rye clearing; courageous"
Riley—an upbeat, friendly surname name—is red hot for girls and still going strong for boys. If you haven't been spending much time around babies recently, you may be surprised to learn that Riley is…
Rowan
Scottish and Irish
"rowan tree; little redhead"
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…
Nolan
Irish
"champion"
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,…
Kennedy
Irish
"misshapen head"
This attractive surname name still projects that Kennedy family charisma. While it didn't come into widespread use until long after the deaths of martyred heroes President John F. or Senator Robert…
Quinn
Irish
"descendant of Conn, chief leader, intelligence"
Quinn is one of the most popular Irish unisex surnames out there, a strong and attractive choice on the rise for girls but still popular for boys. A recent year saw it used for nearly 2690 girls…
Ryan
Irish
"little king"
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…
Sloane
Irish
"raider"
Sloane is a sleek, sophisticated surname name that has gradually morphed over to the girls' side. With its distinctive and intriguing sound, Sloane has been in the US Top 1000 since 2009, and in…
Hayes
English surname and nature name
"hedged area"
One of those simple, straightforward English surnames -- and with a presidential pedigree -- that's easy to translate into a first. Chosen by both Kevin Costner and Jessica Alba for their sons, it…
Connor
Irish
"lover of hounds"
Connor, the appealing name of an early semi-legendary king of Ulster in Irish mythology, sits firmly in the Top 100 and taken together with its alternate spellings would rank even higher. In its…
Callan
Gaelic
"descendent of Cathalan; descendent of the battle ruler"
This anglicized form of the Irish surname Ó Cathaláin links back to the Irish given name, Cathal. Similar to Callum, Caleb, and Calvin, it might feel more usable outside of Ireland and Scotland than…
Finn
Irish
"fair or white"
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…
Riley
English, Irish
"rye clearing; courageous"
Riley -- one of the most popular unisex names -- is trendier now for girls though for boys it's a classic, ALWAYS ranking in the US Top 1000. In fact, after a decade of softening, Riley has recently…
Lennon
Irish
"lover"
A growing number of high-profile (and other) parents are choosing to honor their musical idols, such as Hendrix, Presley, Jagger, and now Lennon, an Irish name for girls as well as boys with a…
Callahan
Irish
"bright-headed"
Callahan, the simpler spelling of Callaghan, is a rhythmic jig of a name whose history harks back to the ancient King of Munster. In the Dirty Harry movies, the Clint Eastwood character is Harry…
Patrick
Latin
"noble, patrician"
Patrick, long tied to a hyper-Irish image, is enjoying something of a renaissance as a stylish classic, as it has long been considered in England. Along with such choices as Charles and George,…
Brody
Irish, English, and Scottish
"broad eye or broad island"
The energetic Brody is a name that claims different meanings and origins depending on whether you're looking at its Irish, Scottish, or English history -- and Eastern Europeans claim a version too.…
Collins
Surname derived from Nicholas or Colin, Greek or Irish and Scottish
"people of victory or pup"
Collins is a surname name that has made the girls' Top 1000 thanks to its use for the daughter of the real-life Blind Side heroine. As of 2022, Collins climbed into the US Top 300. This derivation of…
Delaney
Irish
"dark challenger; dark river"
Delaney has been a popular surname-style choice since 90s, when it joined other Irish surnames such as Cassidy, Kennedy, and Mallory on the US Charts. Buoyant, bright, and cheerful, it ranks in the…
Ronan
Irish
"little seal"
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…
