An Irish county name almost exclusively used for girls now. Kerrigan would be a more modern and masculine choice.

Kieran is a boys' name that could cross over, as an update of outmoded Karen or a variation on trendy Kiera (or Keira or Kyra). Keren Ann is an Israeli-born singer. The proportion of babies named Kieran who are girls is less than ten percent, but is slowly growing. Kieran had an increase in use for girls in 2022.

Keeley is well-used in modern Ireland, also found as Keely and Keela. The boys' form is Keelan. Largely unknown in the US, this could make an interesting update for Kelly or Kaylie or Kylie. A famous bearer is actress Keeley Hawes.

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.

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.

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

Kennedi is a spelling variation of Kennedy. Kennedi has been on an upward trend since she entered the Top 1000 in 1998. If you're going to go with this trendy Presidential name, we prefer Kennedy.

Kaitlin is a variation of Caitlin that's on a steep decline; it dropped out of the Top 1000 in 2013, after more than three decades on the list.

Keefe is an energetic Irish surname occasionally used as a first. Only caveat: Will people think your little Keefe is a Keith with enunciation problems?

Keelan is the Anglicized, phonetic form of the more traditionally-spelled Caelan, also in use. While this name is said by many sources to be unisex, in practice in modern Ireland it is only given to boys. An interesting, accessible choice largely unknown in the US.

Kiernan Shipka, aka Sally Draper on Mad Men, brings this Irish surname into the girls' column. And, like Kieran and Tierney and Tiernan, it's one of the perfectly unisex baby names. Only 14 girls were named Kiernan in the US in a recent year...and three times as many boys. If you want to move beyond Riley and Kennedy to one of the more unusual surname-based Irish names for girls, this may be a good choice.

Like Cassidy, Kassidy peaked near the turn of the millennium and has lost ground in recent years.

Kady, though it has an authentic Irish meaning, may also be a variation of Katy short form of Kadence, or combination of initials K. and D. Though Kady is more distinctive, everyone will just hear it as Katy.

Another two-syllable surname zooming up the ladder for boys, and poised to be grabbed by the girls.

One of many takes on the Keira/Kyra concept, this one was chosen by ice-skating champ Kristi Yamaguchi.

Is Keela distinct enough from Kayla to sound fresh and new? Maybe, though its similarity to the trendy cluster of names that also includes Kaylie and Kylie and Kelly may be enough to turn you off. Keela, a relative of the less serious Keely and the male Keelan, is used in modern Ireland.

If you're looking for an Irish last name that moves beyond Casey and Cassidy, this one is pleasant sounding and worth considering. Kavanaugh, which can also be spelled Cavanagh, Cavenagh, Kavanagh, and Cavanaugh, is one of the few traditional Irish surnames not to start with Mc or O'. Kavanagh relates to the name first Kevin or Caomhan. Early kings of Leinster bore the name Kavanaugh.

One of the more feminine Irish surnames.

A lively boys' name that works well for girls.

While Keegan has been rising in popularity for a number of years, this variant spelling has dropped in the lists.