IE 11 is not supported. For an optimal experience visit our site on another browser.

With one of these last names, you'll have the luck o' the Irish about you

"Sláinte!" to all of the Irish lads and lasses out there.

Everybody's Irish on St. Patrick's Day, but some lucky leprechauns are Irish the rest of the year, too!

Can you identify an Irish man or woman by last name only? If their surname begins with O’, Mc’ or Fitz-, that's a pretty good clue. Those all mean “son of” according to Laura Wattenberg, creator of Namerology.

“America has a long-running love affair with Irish names,” Wattenberg tells TODAY.com.

If you are searching for an Irish name for your little lass or lad (or both!), we've got you covered.

But if you're trying to check out last names that just scream shamrocks, check out the list below.

Irish last names

  • Brady
  • Brennan
  • Brogan
  • Murphy
  • Byrne
  • Kelly
  • Ryan
  • Sullivan
  • O'Connor
  • Walsh
  • McCarthy
  • Doyle
  • Maher
  • Campbell
  • Fitzpatrick
  • Gallagher
  • Cahill
  • Kennedy
  • Murray
  • Nolan
  • Maguire
  • Boland
  • Cullen
  • Finnegan
  • Donnelly
  • Brady
  • Maloney
  • Moran
  • Sweeney
  • Flynn
  • Flannery
  • Malloy
  • Healy
  • Higgins
  • McGuire
  • Cullen
  • Ward
  • Boyle
  • Houlihan
  • Donnelly
  • Smith
  • Shoemaker
  • McDevitt
  • Thompson
  • Wilson
  • Quinn
  • Duffy
  • Madden
  • McKeogh
  • Mulligan