400+ Irish Last Names (With Meanings and Popularity)

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, particularly for girls. This is one name that manages to sound trendy and traditional at the same time.

Less popular than the Bueller-inspired Sloane but following on its coattails, this name ranks toward the middle of the Top 1000, but we see both spellings sticking around for years to come.

Made famous by former child star Macaulay Culkin, one of the more popular Mac names.

Brogan is a cheerful Irish surname that would fit right in with the Logans and Br-starting names now trendy for boys. It's been on the pop list for the past three years, though it's sliding again. Its history includes Saint Brogan (Broccan in Gaelic), who was Saint Patrick's nephew and scribe.

This name of three ancient saints, one Wayans brother, and an NFL wide receiver makes an energetic choice.

Rooney is one of many bouncy Irish surnames that could make an agreeable first, once tied to Mickey Rooney (who was actually born Joseph Yule) in his young and spunky Andy Hardy period.

An uncommon Irish-accented surname that seems particularly well suited to a girl. Tierney Sutton is a well-known jazz singer. Tierney, in its original Tiarnach form, was the name of several saints. It can also join the ranks of Old Hollywood names, via the haunting actress Gene Tierney. ER actress Maura Tierney is a current surname bearer. 

Upper crust-y surname Sheridan gains some energy when used for a girl.

The name of a historic Irish leader, Gannon has a solid, yet spirited feel. It was one of the fastest-rising names of 2014, but that trend didn't continue. One pop culture influence was the name of Teen Mom 3 son Gannon Dewayne McKee.

Made famous by F. Scott Fitzgerald and John Fitzgerald Kennedy; still works best as a middle name.

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.

The additional syllable makes Lark a masculine surname name.

An Irish last-name-first-name that could make a child feel distinctive, while still having the regular guy nickname of Quinn. Christine Taylor and Ben Stiller spelled their son's name Quinlin.

Although this surname name is closely related to the more common Irish name Kieran, Kiernan is also a well used family name, tied to thirty-three ancient chieftains. It has on a few occasions been used for girls.

Tailored Tegan comes from a Welsh saint's name. Teagan is just a little bit different, from an Irish surname. The ea spelling is much more popular.

Part of the Mackenzie/Mackena/Mackenna family, this variation has a positive meaning.

Keely is well-used in modern Ireland, also found as Keeley and Keela. The boys' form is Keelan. Largely unknown in the US, this could make an interesting update for Kelly or Kaylie or Kylie -- though it might ultimately prove to close to one of those trendy names.

Used far more for boys with this spelling, but still has a nice impish Irish feel for a girl.

The Christian name of the dashing Mr. Darcy in Pride and Prejudice— it was his mother's maiden name— is just one of several Fitz names, including Fitzroy, Fitzgerald, Fitzpatrick, that could be used to honor a dad named William, Roy, Gerald or Patrick.

Riley is the spelling of this lively Irish name most often picked for girls, but this version is occasionally used.