Popularity today: #12
Style: Celtic, New Classics, Nickname-Proof, The -ens
Sisters: Megan, Lauren, Kara, Nicole, Erica
Brothers: Justin, Sean, Brandon, Kyle, Colin
Ryan has supplanted Brian as America's top choice to reflect an Irish heritage, just as Brian succeeded Patrick a generation before. It is far more popular in the U.S. than in Ireland, where Ryan is best known as a top-10 last name.