400+ Irish Last Names (With Meanings and Popularity)

The Irish name given to Miranda Hobbes's son on the dearly departed Sex and the City is a friendly and energetic choice. You well might want to make your son part of the Brady bunch.

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.

An Irish surname-name that's used almost exclusively for girls these days.

The short but solid Irish surname Shea works for both genders; Kevin James has a daughter named Shea. Shay is another possible spelling.

A lean and lanky Irish cowboy name with great nickname potential to boot (Cass or Sid are both options). This is one of the great under-rated American names!

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

Attractive Scottish and Irish surname name of a seventh-century saint, associated with the illusionist and escape artist David Blaine.

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.

Eilish is one of those Irish names that, thanks to a celebrity, has suddenly become much more familiar to English speakers. Irish-American singer Billie Eilish (Eilish is actually one of her middle names) introduced the wider world to this Irish name as actress Saoirse Ronan did with hers.

Once the quintessential bouncy teenager name, Kelly helped launch the trend of unisex Irish names . But it now takes a backseat to more substantial surname names like Kennedy.

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.

Tiernan is the slightly edgier and sharper cousin of Kiernan. This is one Irish surname that is attractive but distinctive; Tierney is another, related, option.

It’s been more than three decades since Ferris Bueller took his famous day off in the cult classic 1986 teen comedy movie, but we think the time for this name could and should be now! Especially with the recent rise of the hero's girlfriend, Sloane, up the baby name rankings. Half preppy, half rugged, it boasts that stylish S ending and has a cozy, retro feel.

Fay, also spelled Faye, who had been napping quietly since the 1930's, has, like cousins May/Mae and Ray/Rae, sat up and started rubbing her eyes, ready for a mini-comeback, especially as a middle name. In 2014, Faye hopped back onto the US Top 1000, though Fay is used much more quietly as a first name.

Crosby is an attractively laid-back Irish surname with retro musical associations to Bing and Crosby, Stills, and Nash, and with a jaunty air. Crosby Braverman was the name of a character on the TV show Parenthood, played by Dax Shepard.

Fallon was one of the first of the unisex surname names, but thanks to "Dynasty" in the 1980s it now has a feminine image. For a boy, try Phelan instead.

Kellan Lutz is the attractive young actor who plays Emmett Cullen in the Twilight series.

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

Different origin from the Welsh Dylan, but increasingly used as a variant spelling to honor Bob Dylan or Dylan Thomas. Still, the Dylan spelling is found 20 times as often as Dillon.