400+ Irish Last Names (With Meanings and Popularity)

This Anglicized form of Bearach or short form of Finbarr was in the Top 200 in the USA for 50 years until the early 80s when it rapidly fell out of favor. Barry has not yet found popularity in the modern era - but that may well change as people rediscover their love of classic figures like musician Barry White, baseballer Barry Bonds or even Barack Obama, whose nickname as a young man was Barry.

One of the first of the appealing Irish surnames to take off in this country, this boys’ name has long outgrown its "Mellow Yellow" association, which came via the single from a sixties singer-songwriter named Donovan.

The short but solid Irish surname Shea works well for both genders thanks to its soft, succinct sound. The traditional Irish form is Séaghdha, though it could also be used as a short form of Séamus, connected to James.

Has fallen off its Kathie Lee Gifford inspired peak in the 1990s, but since that notably celebrity baby is now a grownup and out of the limelight, Cassidy may once again reclaim its own Irish charm.

This surname name popularized for girls by TV's Murphy Brown back in the 80's and 90's still has some breezy energy. Almost 400 baby girls were named Murphy in 2021, versus just over 200 baby boys, making the name solidly gender neutral.

Devilishly handsome, Devin arrived as Kevin was moving out. Not to be confused (though it often is) with the English place-name Devon. While both Devin and Devon are flagging somewhat for boys, the names have dropped out of the Top 1000 for girls, making it more a masculine and less a unisex name these days.

Keegan is one of a clan of spirited Irish surnames starting with K and ending with 'n'--this one with the cheery double 'e' in the middle-- that are appealing to an increasing number of parents. It derives from Mac Aodhagáin, meaning "son (or descendant) of Aodhagán," a diminutive of the Irish name Aodh--pronounced Aye.

Bellamy is emerging as an up-and-coming girls' name, an Irish surname-y riff on the super-popular Bella series of names. While the Bella connection makes Bellamy sound a little trendier and more popular than it really is, we see the name possibly rising through the ranks for both genders in the coming years.

If you like Dylan but find it too popular, Quillan could be a distinctive alternative.

A common surname in Ireland that projects a complex image for a short-one-syllable name, combining spirit, substance, and gentleness. The traditional Irish form is Séaghdha, though it could also be used as a short form of Séamus, connected to James.

Tully is a relaxed, rarely used Irish surname possibility which might provide an alternative to Tommy, Eli, or Troy. It has a long history of usage and a number of meanings, depending on which root you follow.

A growing number of high-profile (and other) parents are choosing to honor their musical idols, such as Hendrix, Presley, Jagger, and now Lennon.

While Larkin takes this name from bird to surname, there are actually more female Larkins these days than male, and it's a name that works as well for either gender. It has the literary connection to poet Philip Larkin too.

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 Kennedy, Kennedy is now one of the most popular unisex names for girls as well as the top girls' name starting with K. This is one name that manages to sound trendy and classic at the same time.

Brennan is a winning Irish surname name, more modern than Brian or Brendan, more unusual than Conor and Aidan. The only possible problem with Brennan: people might think you're saying Brendan.

One of many Irish and Scottish surnames starting with Mac and Mc that also feel usable as given names, McCoy has a jaunty and energetic sound. The name entered the US Top 1000 in 2020, and was given to around 220 boys in the US in a recent year, along with 6 girls.

This name of several early Irish saints makes a nice Logan/Conan alternative.

Clancy, one of the original crossover Irish surname names, is as energetic and appealing as ever — full of moxie, more distinctive than Casey, and also one of the less obvious of the red-headed names.

Hayes is a stylish surname name given to more and more baby girls -- nearly 100 in the US last year. That's a considerable number, but many fewer than the nearly 1800 baby boys named Hayes.

Madden is an Irish surname relative of Madigan rising through the charts thanks to its trendy two-syllable, -en ending sound along with its appeal to Madden Football video game-playing dads. John Madden is a former pro football player who went on to coach the Oakland Raiders and become a popular NFL commentator. Madden is also the surname of groovy Nicole Richie baby daddy Joel Madden.