400+ Irish Last Names (With Meanings and Popularity)
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. The list is ordered by their current popularity on Nameberry.
RELATED:
- 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.
- 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.
- 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.
- 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.
- Quinn
Origin:
IrishMeaning:
"descendant of Conn, chief leader, intelligence"Description:
Quinn is one of the first popular Irish unisex surnames, a strong and attractive choice on the rise for girls but still popular for boys. Quinn was used for about 3000 baby girls and 700 boys in the US last year.
- 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.
- 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.
- Dylan
Origin:
WelshMeaning:
"son of the sea"Description:
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 only Dylan in his class.
- 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.
- Torin
Origin:
IrishMeaning:
"chief"Description:
Though it has a Scandinavian ring, this is an out-of-the-ordinary Irish family name. The hard 'T' at the beginning prevents it from sounding as feminine as, say, Loren. Torin's Passage was an early video game.
- Hayes
Origin:
English surname and nature nameMeaning:
"hedged area"Description:
One of those simple, straightforward English surnames -- and with a presidential pedigree -- that's easy to translate into a first. It was recently chosen by both Kevin Costner and Jessica Alba for their sons, which can likely be credited for its spike in popularity in the past few years. Surname names and nature names like Hayes, which qualifies on both counts, along with occupational names all make up the new generation of stylish English names for boys that go far beyond Harry and Edward.
- Sloane
Origin:
IrishMeaning:
"raider"Description:
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 2022, it made its first appearance in the UK charts, jumping more than 400 places in a single year.
- Riley
Origin:
English, IrishMeaning:
"rye clearing; courageous"Description:
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 the most popular girls' name starting with R and also the Number 1 Irish name for girls in the US.
- 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.
- 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.
- Quinn
Origin:
IrishMeaning:
"descendant of Conn, chief leader, intelligence"Description:
Quinn is an engaging Celtic surname that is still on the rise for girls but beginning to flag for boys. As a female name, Quinn is in the Top 100, used for over 3000 baby girls last year, but toward the bottom of the Top 500 for boys, given to 700 baby boys.
- Mara
Origin:
HebrewMeaning:
"bitter"Description:
Mara is the evocative ancient root of Mary, appearing in the Book of Ruth, in which Naomi, devastated after the death of her two sons, says "Call me not Naomi, call me Mara." It's one of the girl names starting with M that both fits in and stands out.
- 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.
- Patrick
Origin:
LatinMeaning:
"noble, patrician"Description:
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, Patrick has escaped overuse in recent decades.
- Rowan
Origin:
Scottish and IrishMeaning:
"rowan tree; little redhead"Description:
Stylish, gentle, and rustic at the same time, Rowan is a name that falls into various categories. Unisex and cool, mystical and woodsy, with the feel of both Rose and Riley, Rowan is a fresh but familiar choice.